./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_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_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 cf6b3a74fd4060a216a178ad3d11a901c2ac840d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:34:38,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:38,305 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:38,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:38,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:38,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:38,314 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:38,315 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:38,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:38,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:38,318 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:38,318 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:38,319 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:38,319 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:38,320 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:38,321 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:38,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:38,323 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:38,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:38,325 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:38,326 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:38,327 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:38,329 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:38,329 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:38,329 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:38,330 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:38,330 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:38,331 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:38,331 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:38,332 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:38,332 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:38,333 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:38,333 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:38,333 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:38,334 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:38,335 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:38,335 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 08:34:38,345 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:38,346 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:38,347 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:38,347 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:38,347 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:38,347 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 08:34:38,347 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 08:34:38,348 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 08:34:38,348 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 08:34:38,348 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 08:34:38,348 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 08:34:38,348 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:38,348 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:38,349 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 08:34:38,350 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:38,350 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 08:34:38,350 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:38,350 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:38,350 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 08:34:38,350 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:38,351 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:38,351 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 08:34:38,351 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 08:34:38,352 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_fc412a90-8123-4da1-891d-2e3088a5b73c/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 -> cf6b3a74fd4060a216a178ad3d11a901c2ac840d [2018-11-18 08:34:38,373 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:38,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:38,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:38,386 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:38,386 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:38,387 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-11-18 08:34:38,424 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/data/04456a346/fa788273b8e94fef91c919b40252fb5e/FLAG9786e148c [2018-11-18 08:34:38,823 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:38,823 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-11-18 08:34:38,827 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/data/04456a346/fa788273b8e94fef91c919b40252fb5e/FLAG9786e148c [2018-11-18 08:34:38,835 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/data/04456a346/fa788273b8e94fef91c919b40252fb5e [2018-11-18 08:34:38,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:38,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:34:38,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:38,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:38,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:38,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:38,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24248849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38, skipping insertion in model container [2018-11-18 08:34:38,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:38,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:38,862 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:38,967 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:38,969 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:38,981 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:38,991 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:38,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38 WrapperNode [2018-11-18 08:34:38,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:38,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:38,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:34:38,992 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:34:38,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:34:39,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:39,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:39,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:39,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... [2018-11-18 08:34:39,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:39,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:39,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:39,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:39,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:39,202 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:39,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:39 BoogieIcfgContainer [2018-11-18 08:34:39,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:39,203 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 08:34:39,203 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 08:34:39,205 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 08:34:39,206 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:39,206 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:34:38" (1/3) ... [2018-11-18 08:34:39,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e7043cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:39, skipping insertion in model container [2018-11-18 08:34:39,207 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:39,207 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:38" (2/3) ... [2018-11-18 08:34:39,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e7043cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:34:39, skipping insertion in model container [2018-11-18 08:34:39,207 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 08:34:39,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:39" (3/3) ... [2018-11-18 08:34:39,209 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume_true-termination_true-no-overflow.c [2018-11-18 08:34:39,262 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:39,263 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 08:34:39,263 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 08:34:39,263 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 08:34:39,263 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:39,263 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:39,263 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 08:34:39,263 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:39,263 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 08:34:39,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 08:34:39,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:39,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:39,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:39,302 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 08:34:39,302 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:39,302 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 08:34:39,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 08:34:39,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:39,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:39,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:39,303 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 08:34:39,303 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:39,310 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 13#L12-3true [2018-11-18 08:34:39,310 INFO L796 eck$LassoCheckResult]: Loop: 13#L12-3true assume true; 8#L12-1true assume !!!(0 == main_~x~0); 11#L13true assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 9#L13-2true main_~c~0 := 1 + main_~c~0; 13#L12-3true [2018-11-18 08:34:39,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2018-11-18 08:34:39,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:39,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:39,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:39,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:39,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:39,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1206635, now seen corresponding path program 1 times [2018-11-18 08:34:39,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:39,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:39,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:39,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:39,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:39,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1804969356, now seen corresponding path program 1 times [2018-11-18 08:34:39,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:39,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:39,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:39,457 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:39,458 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:39,458 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:39,459 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:39,459 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:39,459 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:39,459 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:39,459 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:39,459 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 08:34:39,459 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:39,460 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:39,478 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 08:34:39,490 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 08:34:39,493 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 08:34:39,502 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 08:34:39,592 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:39,593 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,606 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:39,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:39,634 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:39,634 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_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,638 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:39,639 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:39,655 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:39,655 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_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,657 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:39,657 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:39,675 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:39,695 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:39,695 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,711 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:39,711 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:39,733 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:39,733 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:39,875 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:39,876 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:39,876 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:39,877 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:39,877 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:39,877 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:39,877 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:39,877 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:39,877 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:39,877 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 08:34:39,877 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:39,877 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:39,878 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 08:34:39,880 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 08:34:39,886 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 08:34:39,903 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 08:34:39,991 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:39,995 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:39,997 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 08:34:39,998 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:39,998 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:39,999 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:39,999 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:39,999 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,001 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,001 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,006 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,006 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 08:34:40,007 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,007 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,007 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,007 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 08:34:40,007 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,008 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-18 08:34:40,009 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,018 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:40,027 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 08:34:40,027 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 08:34:40,029 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:40,029 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 08:34:40,029 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:40,029 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 08:34:40,031 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 08:34:40,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:40,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:40,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:40,082 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 08:34:40,091 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 08:34:40,092 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-11-18 08:34:40,120 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 31 states and 36 transitions. Complement of second has 5 states. [2018-11-18 08:34:40,120 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 08:34:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 08:34:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2018-11-18 08:34:40,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-18 08:34:40,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:40,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 08:34:40,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:40,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-18 08:34:40,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:40,125 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2018-11-18 08:34:40,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:40,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 15 states and 18 transitions. [2018-11-18 08:34:40,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 08:34:40,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 08:34:40,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2018-11-18 08:34:40,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:40,131 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 08:34:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2018-11-18 08:34:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2018-11-18 08:34:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 08:34:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-11-18 08:34:40,148 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-18 08:34:40,148 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-18 08:34:40,148 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 08:34:40,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-11-18 08:34:40,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:40,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:40,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:40,149 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 08:34:40,149 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:40,149 INFO L794 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 88#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 94#L12-3 assume true; 95#L12-1 [2018-11-18 08:34:40,149 INFO L796 eck$LassoCheckResult]: Loop: 95#L12-1 assume !!!(0 == main_~x~0); 96#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 90#L13-2 main_~c~0 := 1 + main_~c~0; 91#L12-3 assume true; 95#L12-1 [2018-11-18 08:34:40,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2018-11-18 08:34:40,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1390297, now seen corresponding path program 1 times [2018-11-18 08:34:40,155 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:40,161 INFO L82 PathProgramCache]: Analyzing trace with hash 119477119, now seen corresponding path program 1 times [2018-11-18 08:34:40,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:40,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:40,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:40,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:40,191 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:40,191 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:40,191 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:40,191 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:40,191 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:40,191 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,191 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:40,191 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:40,191 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 08:34:40,191 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:40,191 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:40,193 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 08:34:40,195 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 08:34:40,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:40,208 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 08:34:40,288 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:40,288 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,296 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,296 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,321 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,322 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_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,327 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,327 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,344 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,344 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_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,351 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,382 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:40,382 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,401 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,402 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,419 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,437 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:40,437 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,458 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,458 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 14, 4] Nus: [0, 0] [2018-11-18 08:34:40,529 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:40,529 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:40,529 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:40,529 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:40,529 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:40,530 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,530 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:40,530 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:40,530 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-18 08:34:40,530 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:40,530 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:40,532 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 08:34:40,534 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 08:34:40,536 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 08:34:40,537 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 08:34:40,539 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 08:34:40,542 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 08:34:40,544 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 08:34:40,602 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:40,602 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,608 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,608 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,624 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,624 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,626 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,626 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,628 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,628 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,644 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,645 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,646 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,662 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,662 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,666 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,666 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/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 08:34:40,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,691 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,709 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:40,709 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,728 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,728 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,744 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,744 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,759 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:40,759 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_4=1} Honda state: {v_rep~unnamed0~0~true_4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,761 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:40,761 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,779 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:40,779 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:40,803 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:40,805 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:40,805 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:40,805 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:40,805 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:40,805 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:40,806 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:40,806 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:40,806 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:40,806 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-18 08:34:40,806 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:40,806 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:40,807 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 08:34:40,809 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 08:34:40,811 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 08:34:40,813 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 08:34:40,815 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 08:34:40,817 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 08:34:40,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:40,907 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:40,907 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:40,907 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 08:34:40,908 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,908 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,908 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,909 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,909 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,909 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,909 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,910 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,911 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 08:34:40,911 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,911 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,911 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,912 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,912 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,912 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,912 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,913 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 08:34:40,914 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,914 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,914 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,914 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,916 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:40,916 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:40,928 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,928 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 08:34:40,929 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,929 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:40,929 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,929 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,929 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,930 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:40,930 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:40,931 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,931 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 08:34:40,931 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,931 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,932 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,932 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,933 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:40,933 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:40,936 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,936 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 08:34:40,937 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,937 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,937 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:40,937 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,938 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:40,938 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:40,942 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:40,942 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 08:34:40,943 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:40,943 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:40,943 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 08:34:40,943 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:40,948 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-18 08:34:40,948 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-18 08:34:41,000 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:41,015 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 08:34:41,015 INFO L444 ModelExtractionUtils]: 12 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 08:34:41,016 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:41,018 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-18 08:34:41,018 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:41,018 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2018-11-18 08:34:41,026 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 08:34:41,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:41,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:41,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:41,104 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 08:34:41,104 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-18 08:34:41,104 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-11-18 08:34:41,131 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 31 states and 37 transitions. Complement of second has 9 states. [2018-11-18 08:34:41,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 2 accepting loop states [2018-11-18 08:34:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 08:34:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-18 08:34:41,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 08:34:41,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:41,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-18 08:34:41,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:41,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-18 08:34:41,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:41,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2018-11-18 08:34:41,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:41,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 19 states and 23 transitions. [2018-11-18 08:34:41,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 08:34:41,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 08:34:41,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-11-18 08:34:41,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:41,136 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-11-18 08:34:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-11-18 08:34:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2018-11-18 08:34:41,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 08:34:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-11-18 08:34:41,138 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-11-18 08:34:41,138 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-11-18 08:34:41,138 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 08:34:41,138 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2018-11-18 08:34:41,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:41,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:41,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:41,139 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:41,139 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:41,139 INFO L794 eck$LassoCheckResult]: Stem: 198#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 197#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 203#L12-3 assume true; 206#L12-1 assume !!!(0 == main_~x~0); 207#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 208#L13-2 main_~c~0 := 1 + main_~c~0; 200#L12-3 [2018-11-18 08:34:41,139 INFO L796 eck$LassoCheckResult]: Loop: 200#L12-3 assume true; 204#L12-1 assume !!!(0 == main_~x~0); 205#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 199#L13-2 main_~c~0 := 1 + main_~c~0; 200#L12-3 [2018-11-18 08:34:41,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1804969356, now seen corresponding path program 2 times [2018-11-18 08:34:41,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:41,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1206697, now seen corresponding path program 2 times [2018-11-18 08:34:41,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1242279500, now seen corresponding path program 1 times [2018-11-18 08:34:41,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:41,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,181 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:41,181 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:41,181 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:41,181 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:41,181 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:41,181 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,182 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:41,182 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:41,182 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 08:34:41,182 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:41,182 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:41,182 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 08:34:41,190 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 08:34:41,192 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 08:34:41,193 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 08:34:41,235 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:41,235 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,237 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,238 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,256 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:41,256 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,269 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,269 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Honda state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 15] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,285 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,285 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,301 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,301 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,303 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,303 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,334 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:41,334 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,356 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,356 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,373 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,373 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,388 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,388 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-18 08:34:41,403 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:41,403 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:41,404 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:41,404 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:41,404 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:41,404 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,404 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:41,404 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:41,404 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-18 08:34:41,404 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:41,404 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:41,405 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 08:34:41,408 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 08:34:41,414 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 08:34:41,415 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 08:34:41,417 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 08:34:41,418 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 08:34:41,419 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 08:34:41,461 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:41,461 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,468 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,468 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,484 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,501 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:41,501 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,533 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 08:34:41,535 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:41,535 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:41,535 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:41,535 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:41,535 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 08:34:41,535 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,535 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:41,535 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:41,535 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-18 08:34:41,535 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:41,535 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:41,536 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 08:34:41,538 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 08:34:41,539 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 08:34:41,541 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 08:34:41,547 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 08:34:41,548 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 08:34:41,549 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 08:34:41,593 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:41,593 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 08:34:41,593 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 08:34:41,594 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:41,594 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:41,594 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:41,594 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:41,594 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:41,595 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:41,595 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:41,595 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:41,596 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 08:34:41,596 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:41,596 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 08:34:41,596 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:41,596 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:41,597 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:41,597 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 08:34:41,597 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 08:34:41,597 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:41,598 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 08:34:41,598 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:41,598 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:41,598 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 08:34:41,598 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:41,599 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 08:34:41,599 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 08:34:41,605 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 08:34:41,605 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 08:34:41,606 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 08:34:41,606 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 08:34:41,606 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 08:34:41,606 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 08:34:41,609 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-18 08:34:41,609 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-18 08:34:41,644 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 08:34:41,663 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-18 08:34:41,664 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-18 08:34:41,664 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 08:34:41,666 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-18 08:34:41,666 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 08:34:41,666 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2018-11-18 08:34:41,690 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 08:34:41,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:41,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:41,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:41,771 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 08:34:41,771 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2018-11-18 08:34:41,771 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand 7 states. [2018-11-18 08:34:41,822 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand 7 states. Result 36 states and 44 transitions. Complement of second has 10 states. [2018-11-18 08:34:41,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 2 accepting loop states [2018-11-18 08:34:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 08:34:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2018-11-18 08:34:41,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 08:34:41,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:41,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 08:34:41,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:41,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 08:34:41,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 08:34:41,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 44 transitions. [2018-11-18 08:34:41,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:41,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 24 states and 29 transitions. [2018-11-18 08:34:41,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 08:34:41,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 08:34:41,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2018-11-18 08:34:41,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:41,826 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-18 08:34:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2018-11-18 08:34:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2018-11-18 08:34:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 08:34:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-18 08:34:41,828 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 08:34:41,828 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 08:34:41,828 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 08:34:41,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-18 08:34:41,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:41,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:41,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:41,829 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 08:34:41,829 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:41,829 INFO L794 eck$LassoCheckResult]: Stem: 325#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 323#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 324#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 334#L12-3 assume true; 336#L12-1 assume !!!(0 == main_~x~0); 335#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 332#L13-2 main_~c~0 := 1 + main_~c~0; 333#L12-3 assume true; 328#L12-1 assume !!!(0 == main_~x~0); 329#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 337#L13-2 main_~c~0 := 1 + main_~c~0; 331#L12-3 [2018-11-18 08:34:41,829 INFO L796 eck$LassoCheckResult]: Loop: 331#L12-3 assume true; 326#L12-1 assume !!!(0 == main_~x~0); 327#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 330#L13-2 main_~c~0 := 1 + main_~c~0; 331#L12-3 [2018-11-18 08:34:41,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1185021260, now seen corresponding path program 2 times [2018-11-18 08:34:41,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:41,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:41,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:41,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 08:34:41,870 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 08:34:41,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1206697, now seen corresponding path program 3 times [2018-11-18 08:34:41,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:41,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:41,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:41,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:41,883 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:41,883 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:41,884 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:41,884 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:41,884 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:41,884 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:41,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:41,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 08:34:41,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:41,884 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:41,885 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 08:34:41,887 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 08:34:41,889 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 08:34:41,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:41,929 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:41,929 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,947 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,947 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,963 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,963 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,970 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,970 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:41,990 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:41,991 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:41,994 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:41,994 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,022 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:42,022 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,038 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:42,038 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Honda state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 15] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:42,054 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,072 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:42,072 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,090 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:42,090 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] [2018-11-18 08:34:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 08:34:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:34:42,107 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 08:34:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:42,116 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-11-18 08:34:42,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 08:34:42,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 25 transitions. [2018-11-18 08:34:42,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:42,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 19 transitions. [2018-11-18 08:34:42,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 08:34:42,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 08:34:42,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 19 transitions. [2018-11-18 08:34:42,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 08:34:42,118 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-18 08:34:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 19 transitions. [2018-11-18 08:34:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2018-11-18 08:34:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 08:34:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-18 08:34:42,120 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 08:34:42,120 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-18 08:34:42,120 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 08:34:42,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2018-11-18 08:34:42,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 08:34:42,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 08:34:42,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 08:34:42,121 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1] [2018-11-18 08:34:42,121 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 08:34:42,121 INFO L794 eck$LassoCheckResult]: Stem: 368#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 366#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 367#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 377#L12-3 assume true; 379#L12-1 assume !!!(0 == main_~x~0); 380#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 375#L13-2 main_~c~0 := 1 + main_~c~0; 376#L12-3 assume true; 371#L12-1 assume !!!(0 == main_~x~0); 372#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 378#L13-2 main_~c~0 := 1 + main_~c~0; 374#L12-3 [2018-11-18 08:34:42,121 INFO L796 eck$LassoCheckResult]: Loop: 374#L12-3 assume true; 369#L12-1 assume !!!(0 == main_~x~0); 370#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 373#L13-2 main_~c~0 := 1 + main_~c~0; 374#L12-3 [2018-11-18 08:34:42,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1242279562, now seen corresponding path program 3 times [2018-11-18 08:34:42,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:42,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:42,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:42,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:42,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:42,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:42,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 08:34:42,143 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 08:34:42,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:42,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1206697, now seen corresponding path program 4 times [2018-11-18 08:34:42,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:42,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:42,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:42,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:34:42,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:42,160 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 08:34:42,160 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 08:34:42,160 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 08:34:42,160 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 08:34:42,160 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 08:34:42,161 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,161 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 08:34:42,161 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 08:34:42,161 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 08:34:42,161 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 08:34:42,161 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 08:34:42,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 08:34:42,165 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 08:34:42,174 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 08:34:42,176 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 08:34:42,212 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 08:34:42,212 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,215 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:42,215 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,230 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:42,230 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:42,233 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:42,250 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,268 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:42,268 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,284 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:42,284 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,299 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:42,299 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,302 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 08:34:42,302 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc412a90-8123-4da1-891d-2e3088a5b73c/bin-2019/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 08:34:42,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 08:34:42,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 08:34:42,333 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 08:34:42,333 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [9, 1, 0] Nus: [0, 0] [2018-11-18 08:34:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 08:34:42,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:34:42,347 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-18 08:34:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:42,350 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2018-11-18 08:34:42,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 08:34:42,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 9 transitions. [2018-11-18 08:34:42,351 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:34:42,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-18 08:34:42,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 08:34:42,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 08:34:42,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 08:34:42,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 08:34:42,352 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:42,352 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:42,352 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:42,352 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 08:34:42,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:34:42,353 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 08:34:42,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 08:34:42,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:34:42 BoogieIcfgContainer [2018-11-18 08:34:42,357 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 08:34:42,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:42,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:42,358 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:42,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:39" (3/4) ... [2018-11-18 08:34:42,361 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:34:42,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:42,361 INFO L168 Benchmark]: Toolchain (without parser) took 3523.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.3 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -41.9 MB). Peak memory consumption was 180.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:42,362 INFO L168 Benchmark]: CDTParser took 0.16 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 08:34:42,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.34 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:42,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.64 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:42,363 INFO L168 Benchmark]: Boogie Preprocessor took 12.06 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:42,363 INFO L168 Benchmark]: RCFGBuilder took 178.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:42,364 INFO L168 Benchmark]: BuchiAutomizer took 3154.44 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 131.8 MB). Peak memory consumption was 203.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:42,364 INFO L168 Benchmark]: Witness Printer took 3.39 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:42,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.34 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.64 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.06 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 178.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3154.44 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 131.8 MB). Peak memory consumption was 203.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.39 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 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 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 6 locations. One deterministic module has affine ranking function x and consists of 7 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 28 SDslu, 26 SDs, 0 SdLazy, 34 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax154 hnf97 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf95 smp100 dnf157 smp100 tf103 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 75ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 10 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...