./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:35:09,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:35:09,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:35:09,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:35:09,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:35:09,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:35:09,443 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:35:09,444 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:35:09,445 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:35:09,445 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:35:09,446 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:35:09,446 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:35:09,447 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:35:09,447 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:35:09,448 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:35:09,448 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:35:09,449 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:35:09,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:35:09,451 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:35:09,452 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:35:09,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:35:09,454 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:35:09,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:35:09,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:35:09,456 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:35:09,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:35:09,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:35:09,457 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:35:09,458 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:35:09,458 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:35:09,458 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:35:09,459 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:35:09,459 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:35:09,459 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:35:09,459 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:35:09,460 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:35:09,460 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 09:35:09,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:35:09,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:35:09,471 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:35:09,471 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:35:09,471 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:35:09,471 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:35:09,471 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:35:09,471 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:35:09,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:35:09,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:35:09,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:35:09,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:35:09,474 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:35:09,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:35:09,474 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:35:09,474 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:35:09,475 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:35:09,475 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_a084408f-7432-4b2b-9966-5bc3176181aa/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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2018-11-18 09:35:09,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:35:09,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:35:09,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:35:09,511 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:35:09,511 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:35:09,511 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-11-18 09:35:09,555 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/data/d1b33b14f/360cc53186d84e33bf166239f8a95d92/FLAGd17c641fb [2018-11-18 09:35:09,856 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:35:09,856 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-11-18 09:35:09,860 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/data/d1b33b14f/360cc53186d84e33bf166239f8a95d92/FLAGd17c641fb [2018-11-18 09:35:09,869 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/data/d1b33b14f/360cc53186d84e33bf166239f8a95d92 [2018-11-18 09:35:09,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:35:09,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:35:09,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:35:09,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:35:09,876 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:35:09,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:09" (1/1) ... [2018-11-18 09:35:09,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:09, skipping insertion in model container [2018-11-18 09:35:09,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:09" (1/1) ... [2018-11-18 09:35:09,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:35:09,895 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:35:09,999 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:35:10,002 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:35:10,011 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:35:10,019 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:35:10,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10 WrapperNode [2018-11-18 09:35:10,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:35:10,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:35:10,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:35:10,020 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:35:10,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:35:10,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:35:10,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:35:10,040 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:35:10,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... [2018-11-18 09:35:10,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:35:10,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:35:10,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:35:10,052 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:35:10,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:35:10,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:35:10,208 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:35:10,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:10 BoogieIcfgContainer [2018-11-18 09:35:10,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:35:10,208 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:35:10,208 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:35:10,211 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:35:10,211 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:35:10,211 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:35:09" (1/3) ... [2018-11-18 09:35:10,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f87e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:35:10, skipping insertion in model container [2018-11-18 09:35:10,212 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:35:10,212 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:10" (2/3) ... [2018-11-18 09:35:10,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f87e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:35:10, skipping insertion in model container [2018-11-18 09:35:10,212 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:35:10,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:10" (3/3) ... [2018-11-18 09:35:10,214 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-11-18 09:35:10,256 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:35:10,256 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:35:10,256 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:35:10,256 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:35:10,256 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:35:10,257 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:35:10,257 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:35:10,257 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:35:10,257 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:35:10,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-18 09:35:10,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:10,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:35:10,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:35:10,284 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:35:10,284 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:35:10,285 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:35:10,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-18 09:35:10,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:10,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:35:10,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:35:10,286 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 09:35:10,286 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:35:10,291 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-11-18 09:35:10,291 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume true; 6#L17-1true assume !!(main_~x~0 != main_~K~0); 8#L18true assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 5#L18-2true [2018-11-18 09:35:10,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:10,295 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 09:35:10,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:10,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:10,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:10,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-11-18 09:35:10,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:10,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:10,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:10,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:10,361 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-18 09:35:10,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:10,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:10,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:10,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,408 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:10,408 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:10,409 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:10,409 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:10,409 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:35:10,409 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,409 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:10,409 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:10,409 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 09:35:10,409 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:10,410 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:10,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:10,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:10,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:10,545 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:10,546 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,553 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:10,553 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:10,582 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:10,582 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_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,585 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:10,585 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:10,601 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:10,601 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_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,603 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:10,603 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,621 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:35:10,621 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:10,738 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:35:10,739 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:10,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:10,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:10,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:10,739 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:35:10,739 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:10,739 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:10,739 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:10,739 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 09:35:10,739 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:10,739 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:10,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:10,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:10,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:10,829 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:10,832 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:35:10,834 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:10,835 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:10,835 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:10,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:10,835 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:10,839 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:10,839 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:10,846 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:10,846 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:10,847 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:10,847 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:10,847 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:10,847 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:10,849 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:10,849 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:10,855 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:10,856 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:10,856 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:10,856 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:35:10,857 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:10,857 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:10,857 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:10,858 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:35:10,858 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:35:10,862 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:35:10,868 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 09:35:10,868 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:35:10,870 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:35:10,870 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:35:10,870 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:35:10,870 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~K~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 09:35:10,871 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:35:10,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:10,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:10,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:10,929 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 09:35:10,930 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-11-18 09:35:10,962 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 6 states. [2018-11-18 09:35:10,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 09:35:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:35:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 09:35:10,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-18 09:35:10,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:10,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 09:35:10,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:10,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-18 09:35:10,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:10,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-18 09:35:10,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:10,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 11 states and 14 transitions. [2018-11-18 09:35:10,972 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 09:35:10,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 09:35:10,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-18 09:35:10,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:35:10,973 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 09:35:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-18 09:35:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 09:35:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 09:35:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-18 09:35:10,989 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 09:35:10,989 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 09:35:10,989 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:35:10,989 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-18 09:35:10,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:10,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:35:10,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:35:10,990 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 09:35:10,990 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:35:10,990 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 75#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 76#L18-2 assume true; 84#L17-1 assume !!(main_~x~0 != main_~K~0); 85#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 82#L18-2 [2018-11-18 09:35:10,990 INFO L796 eck$LassoCheckResult]: Loop: 82#L18-2 assume true; 77#L17-1 assume !!(main_~x~0 != main_~K~0); 78#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 82#L18-2 [2018-11-18 09:35:10,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-18 09:35:10,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:10,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:10,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:10,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:10,996 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-11-18 09:35:10,996 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:10,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:10,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:10,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,000 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-11-18 09:35:11,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:11,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:11,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:35:11,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:35:11,053 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:11,053 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:11,053 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:11,053 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:11,053 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:35:11,053 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,053 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:11,053 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:11,054 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 09:35:11,054 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:11,054 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:11,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,128 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:11,128 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,130 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:11,130 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:11,145 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:11,145 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_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,147 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:11,147 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:11,162 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:11,163 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_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,167 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:11,167 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:35:11,184 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:11,300 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:35:11,301 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:11,301 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:11,302 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:11,302 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:11,302 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:35:11,302 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,302 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:11,302 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:11,302 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 09:35:11,302 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:11,302 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:11,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,391 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:11,391 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:35:11,392 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:11,393 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:11,393 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:11,393 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:11,393 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:11,394 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:11,394 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:11,397 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:11,397 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:11,398 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:11,398 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:11,398 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:11,398 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:11,399 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:11,400 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:11,406 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:11,406 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:11,406 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:11,407 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:35:11,407 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:11,407 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:11,407 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:11,407 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:35:11,408 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:35:11,412 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:35:11,415 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:35:11,415 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:35:11,416 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:35:11,416 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:35:11,416 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:35:11,416 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~K~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 09:35:11,416 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:35:11,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:11,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:11,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:11,454 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 09:35:11,454 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 09:35:11,473 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 22 transitions. Complement of second has 5 states. [2018-11-18 09:35:11,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 09:35:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:35:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 09:35:11,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 09:35:11,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:11,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 09:35:11,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:11,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-18 09:35:11,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:11,475 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-11-18 09:35:11,476 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:11,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-11-18 09:35:11,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 09:35:11,477 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 09:35:11,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-11-18 09:35:11,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:35:11,477 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-18 09:35:11,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-11-18 09:35:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 09:35:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 09:35:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-11-18 09:35:11,479 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-18 09:35:11,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:35:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:11,482 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand 4 states. [2018-11-18 09:35:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:11,497 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-11-18 09:35:11,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:35:11,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2018-11-18 09:35:11,498 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:11,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2018-11-18 09:35:11,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 09:35:11,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 09:35:11,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2018-11-18 09:35:11,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:35:11,499 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-18 09:35:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2018-11-18 09:35:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 9. [2018-11-18 09:35:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 09:35:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-11-18 09:35:11,500 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-18 09:35:11,500 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-18 09:35:11,500 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:35:11,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2018-11-18 09:35:11,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:11,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:35:11,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:35:11,501 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 09:35:11,501 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:35:11,502 INFO L794 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 182#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 183#L18-2 assume true; 186#L17-1 [2018-11-18 09:35:11,502 INFO L796 eck$LassoCheckResult]: Loop: 186#L17-1 assume !!(main_~x~0 != main_~K~0); 189#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 185#L18-2 assume true; 186#L17-1 [2018-11-18 09:35:11,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-18 09:35:11,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:11,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,506 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 1 times [2018-11-18 09:35:11,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:11,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,512 INFO L82 PathProgramCache]: Analyzing trace with hash 889541472, now seen corresponding path program 2 times [2018-11-18 09:35:11,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:35:11,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,532 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:11,532 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:11,532 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:11,532 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:11,532 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:35:11,532 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,533 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:11,533 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:11,533 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 09:35:11,533 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:11,533 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:11,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,591 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:11,591 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,593 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:11,593 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:11,609 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:11,609 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,612 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:11,612 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:11,627 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:11,627 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:11,630 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:35:11,646 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:11,797 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:35:11,798 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:11,798 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:11,798 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:11,798 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:11,798 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:35:11,798 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,798 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:11,798 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:11,798 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 09:35:11,798 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:11,798 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:11,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,823 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:11,824 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:35:11,824 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:11,824 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:11,825 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:11,825 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:11,825 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:11,826 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:11,826 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:11,829 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:11,830 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:11,830 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:11,831 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:35:11,831 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:11,831 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:11,831 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:11,831 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:35:11,832 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:35:11,834 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:35:11,837 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 09:35:11,838 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:35:11,838 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:35:11,838 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:35:11,838 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:35:11,838 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2018-11-18 09:35:11,839 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:35:11,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:11,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:11,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:11,870 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 09:35:11,870 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-11-18 09:35:11,877 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 19 states and 21 transitions. Complement of second has 5 states. [2018-11-18 09:35:11,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 09:35:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:35:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-18 09:35:11,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-18 09:35:11,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:11,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:35:11,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:11,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-18 09:35:11,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:11,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2018-11-18 09:35:11,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:11,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 12 transitions. [2018-11-18 09:35:11,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-18 09:35:11,881 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-18 09:35:11,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-11-18 09:35:11,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:35:11,881 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 09:35:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-11-18 09:35:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-11-18 09:35:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 09:35:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 09:35:11,882 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 09:35:11,882 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 09:35:11,882 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:35:11,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-18 09:35:11,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 09:35:11,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:35:11,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:35:11,883 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-18 09:35:11,883 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 09:35:11,883 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 249#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 250#L18-2 assume true; 251#L17-1 assume !!(main_~x~0 != main_~K~0); 255#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 252#L18-2 assume true; 253#L17-1 [2018-11-18 09:35:11,884 INFO L796 eck$LassoCheckResult]: Loop: 253#L17-1 assume !!(main_~x~0 != main_~K~0); 254#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 257#L18-2 assume true; 253#L17-1 [2018-11-18 09:35:11,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash 889541534, now seen corresponding path program 2 times [2018-11-18 09:35:11,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:11,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,890 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 2 times [2018-11-18 09:35:11,890 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:11,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:35:11,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash 383635077, now seen corresponding path program 2 times [2018-11-18 09:35:11,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:35:11,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:35:11,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:35:11,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:35:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:11,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:35:11,919 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:35:11,925 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:35:11,928 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:35:11,929 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:35:11,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:11,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:35:11,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 09:35:11,967 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:11,967 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:11,967 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:11,967 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:11,967 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:35:11,967 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:11,967 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:11,968 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:11,968 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 09:35:11,968 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:11,968 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:11,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:11,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:12,008 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:12,008 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:12,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:12,021 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:12,037 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:12,037 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:12,040 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:12,040 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:12,058 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:35:12,058 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:12,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:35:12,062 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a084408f-7432-4b2b-9966-5bc3176181aa/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:12,079 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:35:12,079 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:35:12,220 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:35:12,221 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:35:12,222 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:35:12,222 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:35:12,222 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:35:12,222 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:35:12,222 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:35:12,222 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:35:12,222 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:35:12,222 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 09:35:12,222 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:35:12,222 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:35:12,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:12,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:12,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:35:12,247 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:35:12,248 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:35:12,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:12,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:12,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:12,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:12,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:12,250 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:12,250 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:12,255 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:12,255 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 [2018-11-18 09:35:12,256 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:12,256 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:12,256 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:12,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:12,257 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 09:35:12,257 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 09:35:12,258 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:35:12,258 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:35:12,259 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:35:12,259 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:35:12,259 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:35:12,259 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:35:12,259 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:35:12,259 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:35:12,259 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:35:12,265 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:35:12,267 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 09:35:12,267 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 09:35:12,268 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:35:12,268 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:35:12,268 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:35:12,268 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~K~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 09:35:12,268 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:35:12,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:12,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:12,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:12,317 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 09:35:12,317 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 09:35:12,322 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-11-18 09:35:12,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 09:35:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:35:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-18 09:35:12,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:35:12,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:12,323 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:35:12,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:12,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:12,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:12,359 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 09:35:12,359 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 09:35:12,362 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-11-18 09:35:12,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 09:35:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:35:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-18 09:35:12,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:35:12,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:12,365 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 09:35:12,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:35:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:12,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:35:12,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:35:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:35:12,383 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 09:35:12,383 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 09:35:12,389 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2018-11-18 09:35:12,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 09:35:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:35:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-18 09:35:12,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-18 09:35:12,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:12,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-18 09:35:12,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:12,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-18 09:35:12,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:35:12,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2018-11-18 09:35:12,392 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:35:12,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2018-11-18 09:35:12,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:35:12,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:35:12,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:35:12,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:35:12,392 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:35:12,392 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:35:12,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:35:12,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:35:12,393 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-11-18 09:35:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:35:12,393 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 09:35:12,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 09:35:12,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 09:35:12,393 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:35:12,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 09:35:12,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:35:12,393 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:35:12,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:35:12,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:35:12,393 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:35:12,393 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:35:12,394 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:35:12,394 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 09:35:12,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:35:12,394 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:35:12,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 09:35:12,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:35:12 BoogieIcfgContainer [2018-11-18 09:35:12,398 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:35:12,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:35:12,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:35:12,398 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:35:12,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:10" (3/4) ... [2018-11-18 09:35:12,401 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:35:12,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:35:12,402 INFO L168 Benchmark]: Toolchain (without parser) took 2529.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:35:12,403 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:35:12,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.23 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:12,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.62 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:12,404 INFO L168 Benchmark]: Boogie Preprocessor took 12.33 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:35:12,405 INFO L168 Benchmark]: RCFGBuilder took 155.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:12,405 INFO L168 Benchmark]: BuchiAutomizer took 2189.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:35:12,406 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:35:12,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.23 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.62 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.33 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2189.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function K + -1 * x and consists of 4 locations. One deterministic module has affine ranking function K + -1 * x and consists of 3 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One nondeterministic module has affine ranking function -1 * K + x 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 2.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 37 SDtfs, 33 SDslu, 10 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax199 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...