./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 32bit --witnessprinter.graph.data.programhash edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 23:57:42,294 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:57:42,295 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:57:42,301 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:57:42,301 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:57:42,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:57:42,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:57:42,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:57:42,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:57:42,304 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:57:42,304 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:57:42,304 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:57:42,305 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:57:42,305 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:57:42,306 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:57:42,306 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:57:42,306 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:57:42,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:57:42,308 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:57:42,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:57:42,309 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:57:42,310 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:57:42,311 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:57:42,311 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:57:42,311 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:57:42,311 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:57:42,312 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:57:42,312 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:57:42,313 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:57:42,313 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:57:42,313 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:57:42,314 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:57:42,314 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:57:42,314 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:57:42,314 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:57:42,315 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:57:42,315 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-08 23:57:42,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:57:42,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:57:42,323 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 23:57:42,323 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 23:57:42,323 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 23:57:42,323 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 23:57:42,324 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 23:57:42,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 23:57:42,325 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:57:42,325 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 23:57:42,326 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:57:42,326 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 23:57:42,326 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 23:57:42,326 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 23:57:42,326 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_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2018-12-08 23:57:42,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:57:42,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:57:42,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:57:42,355 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:57:42,356 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:57:42,356 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-12-08 23:57:42,398 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/data/914505ef6/4ddd715d781244429cd43816310f8584/FLAG98400f774 [2018-12-08 23:57:42,740 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:57:42,741 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-12-08 23:57:42,744 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/data/914505ef6/4ddd715d781244429cd43816310f8584/FLAG98400f774 [2018-12-08 23:57:42,754 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/data/914505ef6/4ddd715d781244429cd43816310f8584 [2018-12-08 23:57:42,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:57:42,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 23:57:42,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:57:42,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:57:42,760 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:57:42,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba821c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42, skipping insertion in model container [2018-12-08 23:57:42,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:57:42,780 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:57:42,863 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:57:42,866 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:57:42,874 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:57:42,881 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:57:42,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42 WrapperNode [2018-12-08 23:57:42,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:57:42,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 23:57:42,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 23:57:42,882 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 23:57:42,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 23:57:42,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:57:42,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:57:42,907 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:57:42,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... [2018-12-08 23:57:42,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:57:42,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:57:42,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:57:42,919 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:57:42,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:57:42,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:57:42,980 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-12-08 23:57:42,980 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-12-08 23:57:43,055 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:57:43,055 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 23:57:43,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:57:43 BoogieIcfgContainer [2018-12-08 23:57:43,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:57:43,055 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 23:57:43,055 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 23:57:43,058 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 23:57:43,058 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 23:57:43,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 11:57:42" (1/3) ... [2018-12-08 23:57:43,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bdab42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 11:57:43, skipping insertion in model container [2018-12-08 23:57:43,059 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 23:57:43,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:57:42" (2/3) ... [2018-12-08 23:57:43,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bdab42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 11:57:43, skipping insertion in model container [2018-12-08 23:57:43,059 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 23:57:43,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:57:43" (3/3) ... [2018-12-08 23:57:43,060 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-12-08 23:57:43,095 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 23:57:43,095 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 23:57:43,095 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 23:57:43,095 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 23:57:43,095 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:57:43,095 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:57:43,095 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 23:57:43,096 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:57:43,096 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 23:57:43,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-12-08 23:57:43,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 23:57:43,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:57:43,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:57:43,125 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-08 23:57:43,125 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 23:57:43,125 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 23:57:43,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-12-08 23:57:43,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 23:57:43,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:57:43,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:57:43,126 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-08 23:57:43,126 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 23:57:43,131 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 16#f91ENTRYtrue [2018-12-08 23:57:43,131 INFO L796 eck$LassoCheckResult]: Loop: 16#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 16#f91ENTRYtrue [2018-12-08 23:57:43,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2018-12-08 23:57:43,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:43,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:43,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,191 INFO L82 PathProgramCache]: Analyzing trace with hash 43828, now seen corresponding path program 1 times [2018-12-08 23:57:43,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:43,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:43,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:43,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,202 INFO L82 PathProgramCache]: Analyzing trace with hash 30251902, now seen corresponding path program 1 times [2018-12-08 23:57:43,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:43,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:43,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:43,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,254 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:57:43,255 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:57:43,255 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:57:43,255 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:57:43,255 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:57:43,255 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,255 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:57:43,255 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:57:43,255 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-12-08 23:57:43,255 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:57:43,255 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:57:43,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,309 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:57:43,309 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,313 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:43,313 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:43,317 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:57:43,318 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,333 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:43,333 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:43,334 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:57:43,335 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,349 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:43,349 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,365 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:57:43,365 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:43,382 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 23:57:43,383 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:57:43,383 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:57:43,383 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:57:43,383 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:57:43,383 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:57:43,383 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,383 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:57:43,383 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:57:43,383 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-12-08 23:57:43,383 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:57:43,383 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:57:43,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,417 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:57:43,420 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:57:43,421 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:57:43,422 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:57:43,423 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:57:43,423 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:57:43,423 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:57:43,423 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:57:43,425 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:57:43,425 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:57:43,427 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:57:43,428 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:57:43,428 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:57:43,428 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:57:43,428 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:57:43,429 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:57:43,429 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:57:43,429 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:57:43,429 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:57:43,430 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:57:43,430 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:57:43,431 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:57:43,431 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:57:43,431 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:57:43,431 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:57:43,431 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:57:43,432 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:57:43,432 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:57:43,435 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:57:43,438 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:57:43,438 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 23:57:43,440 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:57:43,440 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:57:43,440 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:57:43,440 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-12-08 23:57:43,441 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:57:43,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:57:43,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:57:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:57:43,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:57:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:57:43,519 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 23:57:43,520 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 4 states. [2018-12-08 23:57:43,587 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 4 states. Result 33 states and 41 transitions. Complement of second has 12 states. [2018-12-08 23:57:43,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 23:57:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 23:57:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-08 23:57:43,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2018-12-08 23:57:43,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:57:43,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-08 23:57:43,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:57:43,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2018-12-08 23:57:43,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:57:43,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2018-12-08 23:57:43,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 23:57:43,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 18 states and 24 transitions. [2018-12-08 23:57:43,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-12-08 23:57:43,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-12-08 23:57:43,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-12-08 23:57:43,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:57:43,600 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-12-08 23:57:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-12-08 23:57:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-12-08 23:57:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 23:57:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-12-08 23:57:43,617 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-12-08 23:57:43,617 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-12-08 23:57:43,618 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 23:57:43,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2018-12-08 23:57:43,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 23:57:43,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:57:43,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:57:43,619 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:57:43,619 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-12-08 23:57:43,619 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 99#L26 call main_#t~ret3 := f91(main_~x~0);< 104#f91ENTRY ~x := #in~x; 109#L16 assume !(~x > 100); 100#L19 call #t~ret0 := f91(11 + ~x);< 107#f91ENTRY ~x := #in~x; 110#L16 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 111#f91EXIT >#26#return; 101#L19-1 [2018-12-08 23:57:43,619 INFO L796 eck$LassoCheckResult]: Loop: 101#L19-1 call #t~ret1 := f91(#t~ret0);< 106#f91ENTRY ~x := #in~x; 113#L16 assume !(~x > 100); 102#L19 call #t~ret0 := f91(11 + ~x);< 106#f91ENTRY ~x := #in~x; 113#L16 assume ~x > 100;#res := ~x - 10; 103#f91FINAL assume true; 108#f91EXIT >#26#return; 101#L19-1 [2018-12-08 23:57:43,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,620 INFO L82 PathProgramCache]: Analyzing trace with hash -495039419, now seen corresponding path program 1 times [2018-12-08 23:57:43,620 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:43,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:43,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:43,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 1 times [2018-12-08 23:57:43,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:43,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:43,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:43,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:43,634 INFO L82 PathProgramCache]: Analyzing trace with hash -984000794, now seen corresponding path program 1 times [2018-12-08 23:57:43,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:43,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:43,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:43,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:43,713 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:57:43,713 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:57:43,713 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:57:43,713 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:57:43,713 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:57:43,713 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,713 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:57:43,713 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:57:43,713 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-12-08 23:57:43,714 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:57:43,714 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:57:43,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:43,741 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:57:43,741 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,742 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:43,743 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:43,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:57:43,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:55,791 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-08 23:57:55,794 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:57:55,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:57:55,794 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:57:55,794 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:57:55,794 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:57:55,794 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:55,795 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:57:55,795 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:57:55,795 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-12-08 23:57:55,795 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:57:55,795 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:57:55,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:55,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:55,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:55,830 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:57:55,830 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:57:55,831 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:57:55,831 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:57:55,831 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:57:55,832 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:57:55,832 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:57:55,832 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:57:55,832 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:57:55,833 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:57:55,837 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:57:55,841 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:57:55,841 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 23:57:55,842 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:57:55,842 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:57:55,842 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:57:55,842 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-12-08 23:57:55,842 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:57:55,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:57:55,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:57:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:57:55,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:57:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:57:55,964 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-12-08 23:57:55,965 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-12-08 23:57:56,112 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 50 states and 72 transitions. Complement of second has 32 states. [2018-12-08 23:57:56,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-12-08 23:57:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-08 23:57:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-12-08 23:57:56,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2018-12-08 23:57:56,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:57:56,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 17 letters. Loop has 8 letters. [2018-12-08 23:57:56,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:57:56,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 16 letters. [2018-12-08 23:57:56,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:57:56,116 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 72 transitions. [2018-12-08 23:57:56,120 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-12-08 23:57:56,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 61 transitions. [2018-12-08 23:57:56,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-12-08 23:57:56,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-12-08 23:57:56,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 61 transitions. [2018-12-08 23:57:56,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:57:56,123 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 61 transitions. [2018-12-08 23:57:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 61 transitions. [2018-12-08 23:57:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-12-08 23:57:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-08 23:57:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2018-12-08 23:57:56,128 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-12-08 23:57:56,128 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-12-08 23:57:56,129 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 23:57:56,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2018-12-08 23:57:56,130 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-12-08 23:57:56,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:57:56,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:57:56,130 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:57:56,130 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 23:57:56,130 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 289#L26 call main_#t~ret3 := f91(main_~x~0);< 290#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 281#L19 call #t~ret0 := f91(11 + ~x);< 297#f91ENTRY ~x := #in~x; 303#L16 assume ~x > 100;#res := ~x - 10; 310#f91FINAL assume true; 309#f91EXIT >#26#return; 285#L19-1 call #t~ret1 := f91(#t~ret0);< 294#f91ENTRY ~x := #in~x; 313#L16 assume !(~x > 100); 295#L19 [2018-12-08 23:57:56,131 INFO L796 eck$LassoCheckResult]: Loop: 295#L19 call #t~ret0 := f91(11 + ~x);< 296#f91ENTRY ~x := #in~x; 304#L16 assume !(~x > 100); 295#L19 [2018-12-08 23:57:56,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:56,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1198389434, now seen corresponding path program 2 times [2018-12-08 23:57:56,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:56,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:56,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:56,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:57:56,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:56,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:56,140 INFO L82 PathProgramCache]: Analyzing trace with hash 54268, now seen corresponding path program 2 times [2018-12-08 23:57:56,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:56,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:56,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:56,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:57:56,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:57:56,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:57:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1451488419, now seen corresponding path program 3 times [2018-12-08 23:57:56,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:57:56,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:57:56,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:56,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:57:56,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:57:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:57:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 23:57:56,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:57:56,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 23:57:56,219 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:57:56,219 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:57:56,219 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:57:56,219 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:57:56,219 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:57:56,219 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:56,219 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:57:56,219 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:57:56,219 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-12-08 23:57:56,219 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:57:56,219 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:57:56,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:56,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:56,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:56,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:57:56,250 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:57:56,250 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:56,256 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:56,256 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:56,259 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:57:56,259 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:56,277 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:56,277 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:56,279 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:57:56,279 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:56,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:56,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:57:56,296 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:57:56,296 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:56,311 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:57:56,311 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:57:56,332 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:57:56,332 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:08,353 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-08 23:58:08,356 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:58:08,356 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:58:08,356 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:58:08,356 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:58:08,356 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:58:08,356 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:08,356 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:58:08,356 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:58:08,356 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-12-08 23:58:08,356 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:58:08,356 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:58:08,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:08,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:08,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:08,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:08,382 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:58:08,382 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:58:08,382 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:08,382 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:08,383 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:08,383 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:08,383 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:08,383 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:08,383 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:08,383 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:08,384 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:08,384 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:08,384 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:08,384 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:08,384 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:08,384 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:08,384 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:08,385 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:08,385 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:08,385 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:08,385 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:08,386 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:08,386 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:08,386 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:08,386 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:08,386 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:08,386 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:08,386 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:08,387 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:08,387 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:08,387 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:08,387 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:08,387 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:08,387 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:08,388 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:08,388 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:08,388 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:08,391 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:58:08,393 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:58:08,393 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 23:58:08,393 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:58:08,393 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:58:08,393 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:58:08,393 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-12-08 23:58:08,394 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:58:08,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:58:08,450 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 [2018-12-08 23:58:08,451 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-12-08 23:58:08,501 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-12-08 23:58:08,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 23:58:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-12-08 23:58:08,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 23:58:08,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:08,502 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:58:08,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:58:08,564 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-12-08 23:58:08,565 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-12-08 23:58:08,611 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-12-08 23:58:08,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 23:58:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-12-08 23:58:08,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 23:58:08,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:08,612 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:58:08,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:58:08,677 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-12-08 23:58:08,677 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-12-08 23:58:08,751 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 70 states and 99 transitions. Complement of second has 16 states. [2018-12-08 23:58:08,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 23:58:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2018-12-08 23:58:08,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 23:58:08,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:08,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-08 23:58:08,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:08,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 6 letters. [2018-12-08 23:58:08,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:08,752 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 99 transitions. [2018-12-08 23:58:08,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-12-08 23:58:08,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 47 states and 73 transitions. [2018-12-08 23:58:08,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-12-08 23:58:08,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-12-08 23:58:08,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2018-12-08 23:58:08,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:58:08,755 INFO L705 BuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2018-12-08 23:58:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2018-12-08 23:58:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2018-12-08 23:58:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 23:58:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2018-12-08 23:58:08,758 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2018-12-08 23:58:08,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 23:58:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-08 23:58:08,760 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 8 states. [2018-12-08 23:58:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:58:08,823 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-12-08 23:58:08,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-08 23:58:08,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2018-12-08 23:58:08,824 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-12-08 23:58:08,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 74 transitions. [2018-12-08 23:58:08,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-12-08 23:58:08,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-12-08 23:58:08,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 74 transitions. [2018-12-08 23:58:08,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:58:08,826 INFO L705 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-12-08 23:58:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 74 transitions. [2018-12-08 23:58:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-12-08 23:58:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-08 23:58:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2018-12-08 23:58:08,829 INFO L728 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-12-08 23:58:08,829 INFO L608 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-12-08 23:58:08,829 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 23:58:08,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2018-12-08 23:58:08,830 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-12-08 23:58:08,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:58:08,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:58:08,830 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-12-08 23:58:08,830 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-12-08 23:58:08,830 INFO L794 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 812#L26 call main_#t~ret3 := f91(main_~x~0);< 813#f91ENTRY ~x := #in~x; 834#L16 assume !(~x > 100); 835#L19 call #t~ret0 := f91(11 + ~x);< 841#f91ENTRY ~x := #in~x; 844#L16 assume !(~x > 100); 839#L19 call #t~ret0 := f91(11 + ~x);< 842#f91ENTRY ~x := #in~x; 845#L16 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 840#f91EXIT >#26#return; 810#L19-1 call #t~ret1 := f91(#t~ret0);< 817#f91ENTRY ~x := #in~x; 859#L16 assume ~x > 100;#res := ~x - 10; 858#f91FINAL assume true; 855#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 848#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-12-08 23:58:08,831 INFO L796 eck$LassoCheckResult]: Loop: 851#f91ENTRY ~x := #in~x; 846#L16 assume !(~x > 100); 821#L19 call #t~ret0 := f91(11 + ~x);< 822#f91ENTRY ~x := #in~x; 830#L16 assume !(~x > 100); 820#L19 call #t~ret0 := f91(11 + ~x);< 823#f91ENTRY ~x := #in~x; 829#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 831#f91EXIT >#26#return; 807#L19-1 call #t~ret1 := f91(#t~ret0);< 815#f91ENTRY ~x := #in~x; 850#L16 assume ~x > 100;#res := ~x - 10; 824#f91FINAL assume true; 825#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 847#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-12-08 23:58:08,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:08,831 INFO L82 PathProgramCache]: Analyzing trace with hash 803701992, now seen corresponding path program 1 times [2018-12-08 23:58:08,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:58:08,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:58:08,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:08,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:58:08,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:58:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:58:08,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1260361570, now seen corresponding path program 1 times [2018-12-08 23:58:08,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:58:08,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:58:08,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:08,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:58:08,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:58:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:58:08,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:08,846 INFO L82 PathProgramCache]: Analyzing trace with hash 187356247, now seen corresponding path program 2 times [2018-12-08 23:58:08,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:58:08,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:58:08,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:08,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:58:08,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-12-08 23:58:08,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 23:58:08,887 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 23:58:08,896 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 23:58:08,905 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 23:58:08,905 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 23:58:08,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-12-08 23:58:08,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 23:58:08,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-08 23:58:09,039 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:58:09,039 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:58:09,040 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:58:09,040 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:58:09,040 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:58:09,040 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:09,040 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:58:09,040 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:58:09,040 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-12-08 23:58:09,040 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:58:09,040 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:58:09,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,063 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:58:09,063 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:09,065 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:09,065 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:09,068 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:58:09,068 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:09,092 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:09,092 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:09,094 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:58:09,094 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:09,109 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:09,109 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:09,111 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:58:09,111 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:09,127 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:09,127 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:09,129 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:58:09,129 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:09,154 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:09,154 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:09,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:58:09,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:09,492 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 23:58:09,494 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:58:09,494 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:58:09,494 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:58:09,494 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:58:09,494 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:58:09,494 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:09,494 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:58:09,494 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:58:09,494 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-12-08 23:58:09,494 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:58:09,494 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:58:09,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:09,526 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:58:09,526 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:58:09,526 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:09,527 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:09,527 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:09,527 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:09,527 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:09,527 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:09,527 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:09,527 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:09,528 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:09,528 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:09,528 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:09,528 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:09,529 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:09,529 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:09,529 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:09,529 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:09,529 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:09,529 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:09,529 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:09,530 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:09,530 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:09,530 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:09,530 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:09,530 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:09,530 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:09,530 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:09,531 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:09,531 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:09,531 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:09,531 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:09,531 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:09,531 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:09,531 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:09,531 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:09,531 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:09,532 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:58:09,532 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:09,532 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:09,532 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:09,532 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:09,532 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:09,533 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:09,533 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:09,533 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:09,534 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:58:09,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:58:09,535 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 23:58:09,536 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:58:09,536 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:58:09,536 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:58:09,536 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-12-08 23:58:09,536 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:58:09,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:09,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:09,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-08 23:58:09,669 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-12-08 23:58:09,669 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-12-08 23:58:09,890 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-12-08 23:58:09,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 23:58:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-12-08 23:58:09,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-12-08 23:58:09,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:09,891 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:58:09,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:09,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:09,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-08 23:58:10,017 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2018-12-08 23:58:10,017 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-12-08 23:58:10,236 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-12-08 23:58:10,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 23:58:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-12-08 23:58:10,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-12-08 23:58:10,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:10,237 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:58:10,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:10,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:10,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-08 23:58:10,376 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-12-08 23:58:10,377 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-12-08 23:58:10,825 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 430 states and 530 transitions. Complement of second has 216 states. [2018-12-08 23:58:10,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 23:58:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 48 transitions. [2018-12-08 23:58:10,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 19 letters. [2018-12-08 23:58:10,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:10,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 40 letters. Loop has 19 letters. [2018-12-08 23:58:10,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:10,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 38 letters. [2018-12-08 23:58:10,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:10,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 530 transitions. [2018-12-08 23:58:10,832 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-12-08 23:58:10,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 202 states and 268 transitions. [2018-12-08 23:58:10,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2018-12-08 23:58:10,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2018-12-08 23:58:10,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 268 transitions. [2018-12-08 23:58:10,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:58:10,836 INFO L705 BuchiCegarLoop]: Abstraction has 202 states and 268 transitions. [2018-12-08 23:58:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 268 transitions. [2018-12-08 23:58:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 156. [2018-12-08 23:58:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-12-08 23:58:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2018-12-08 23:58:10,845 INFO L728 BuchiCegarLoop]: Abstraction has 156 states and 197 transitions. [2018-12-08 23:58:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 23:58:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-08 23:58:10,845 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand 9 states. [2018-12-08 23:58:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:58:10,970 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2018-12-08 23:58:10,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 23:58:10,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 187 transitions. [2018-12-08 23:58:10,973 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-08 23:58:10,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 103 states and 122 transitions. [2018-12-08 23:58:10,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2018-12-08 23:58:10,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-12-08 23:58:10,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 122 transitions. [2018-12-08 23:58:10,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:58:10,975 INFO L705 BuchiCegarLoop]: Abstraction has 103 states and 122 transitions. [2018-12-08 23:58:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 122 transitions. [2018-12-08 23:58:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-12-08 23:58:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-12-08 23:58:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-12-08 23:58:10,981 INFO L728 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-12-08 23:58:10,981 INFO L608 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-12-08 23:58:10,981 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 23:58:10,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2018-12-08 23:58:10,982 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-08 23:58:10,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:58:10,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:58:10,983 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2018-12-08 23:58:10,983 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-12-08 23:58:10,983 INFO L794 eck$LassoCheckResult]: Stem: 2797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2789#L26 call main_#t~ret3 := f91(main_~x~0);< 2790#f91ENTRY ~x := #in~x; 2818#L16 assume !(~x > 100); 2814#L19 call #t~ret0 := f91(11 + ~x);< 2813#f91ENTRY ~x := #in~x; 2816#L16 assume !(~x > 100); 2815#L19 call #t~ret0 := f91(11 + ~x);< 2847#f91ENTRY ~x := #in~x; 2850#L16 assume ~x > 100;#res := ~x - 10; 2849#f91FINAL assume true; 2848#f91EXIT >#26#return; 2843#L19-1 call #t~ret1 := f91(#t~ret0);< 2845#f91ENTRY ~x := #in~x; 2865#L16 assume ~x > 100;#res := ~x - 10; 2851#f91FINAL assume true; 2842#f91EXIT >#28#return; 2841#L19-2 #res := #t~ret1;havoc #t~ret1;havoc #t~ret0; 2839#f91FINAL assume true; 2838#f91EXIT >#26#return; 2832#L19-1 call #t~ret1 := f91(#t~ret0);< 2837#f91ENTRY ~x := #in~x; 2835#L16 assume !(~x > 100); 2799#L19 call #t~ret0 := f91(11 + ~x);< 2807#f91ENTRY ~x := #in~x; 2840#L16 assume !(~x > 100); 2800#L19 call #t~ret0 := f91(11 + ~x);< 2806#f91ENTRY ~x := #in~x; 2882#L16 assume ~x > 100;#res := ~x - 10; 2881#f91FINAL assume true; 2878#f91EXIT >#26#return; 2798#L19-1 [2018-12-08 23:58:10,983 INFO L796 eck$LassoCheckResult]: Loop: 2798#L19-1 call #t~ret1 := f91(#t~ret0);< 2801#f91ENTRY ~x := #in~x; 2830#L16 assume !(~x > 100); 2831#L19 call #t~ret0 := f91(11 + ~x);< 2879#f91ENTRY ~x := #in~x; 2886#L16 assume ~x > 100;#res := ~x - 10; 2885#f91FINAL assume true; 2877#f91EXIT >#26#return; 2798#L19-1 [2018-12-08 23:58:10,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1994701169, now seen corresponding path program 3 times [2018-12-08 23:58:10,984 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:58:10,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:58:10,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:10,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:58:10,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-12-08 23:58:11,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 23:58:11,041 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 23:58:11,048 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 23:58:11,055 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-08 23:58:11,055 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 23:58:11,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-08 23:58:11,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 23:58:11,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-12-08 23:58:11,075 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 23:58:11,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:11,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 2 times [2018-12-08 23:58:11,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:58:11,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:58:11,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:11,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:58:11,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:58:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:58:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:58:11,132 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:58:11,132 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:58:11,132 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:58:11,132 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:58:11,132 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:58:11,132 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:11,132 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:58:11,132 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:58:11,132 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-12-08 23:58:11,132 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:58:11,132 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:58:11,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:11,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:11,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:11,155 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:58:11,155 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:11,157 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:11,157 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:11,159 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:58:11,159 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:11,174 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:11,174 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:11,176 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:58:11,176 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:11,191 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:58:11,191 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_95bbb1b1-8ea6-446d-8d42-70f4ac591e78/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 [2018-12-08 23:58:11,210 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:58:11,210 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:58:23,237 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-08 23:58:23,240 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:58:23,240 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:58:23,240 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:58:23,240 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:58:23,240 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:58:23,240 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:58:23,241 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:58:23,241 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:58:23,241 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-12-08 23:58:23,241 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:58:23,241 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:58:23,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:23,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:23,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:58:23,272 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:58:23,272 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:58:23,273 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 23:58:23,273 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:58:23,273 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:58:23,273 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:58:23,273 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:58:23,273 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:58:23,273 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:58:23,274 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:58:23,275 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:58:23,277 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:58:23,277 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 23:58:23,277 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:58:23,277 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:58:23,277 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:58:23,277 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-12-08 23:58:23,277 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:58:23,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:23,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:23,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:58:23,370 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-12-08 23:58:23,370 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-12-08 23:58:23,479 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-12-08 23:58:23,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-08 23:58:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-12-08 23:58:23,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-12-08 23:58:23,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:23,480 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:58:23,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:23,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:23,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:58:23,571 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2018-12-08 23:58:23,571 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-12-08 23:58:23,692 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-12-08 23:58:23,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-08 23:58:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-12-08 23:58:23,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-12-08 23:58:23,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:23,694 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:58:23,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:58:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:23,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:58:23,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:58:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:58:23,818 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-12-08 23:58:23,818 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-12-08 23:58:23,946 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 180 states and 210 transitions. Complement of second has 27 states. [2018-12-08 23:58:23,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-12-08 23:58:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-08 23:58:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2018-12-08 23:58:23,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 8 letters. [2018-12-08 23:58:23,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:23,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 39 letters. Loop has 8 letters. [2018-12-08 23:58:23,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:23,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 16 letters. [2018-12-08 23:58:23,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:58:23,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 210 transitions. [2018-12-08 23:58:23,950 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 23:58:23,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2018-12-08 23:58:23,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 23:58:23,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 23:58:23,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 23:58:23,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 23:58:23,951 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:58:23,951 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:58:23,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 23:58:23,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-12-08 23:58:23,951 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-12-08 23:58:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:58:23,952 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-08 23:58:23,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 23:58:23,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-08 23:58:23,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 23:58:23,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 23:58:23,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 23:58:23,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 23:58:23,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 23:58:23,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 23:58:23,953 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:58:23,953 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:58:23,953 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:58:23,953 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 23:58:23,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 23:58:23,953 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 23:58:23,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 23:58:23,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 11:58:23 BoogieIcfgContainer [2018-12-08 23:58:23,958 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 23:58:23,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:58:23,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:58:23,959 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:58:23,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:57:43" (3/4) ... [2018-12-08 23:58:23,962 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 23:58:23,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:58:23,962 INFO L168 Benchmark]: Toolchain (without parser) took 41206.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 286.8 MB). Free memory was 956.0 MB in the beginning and 838.6 MB in the end (delta: 117.4 MB). Peak memory consumption was 404.2 MB. Max. memory is 11.5 GB. [2018-12-08 23:58:23,963 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:58:23,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.18 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:58:23,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.90 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:58:23,964 INFO L168 Benchmark]: Boogie Preprocessor took 11.60 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:58:23,964 INFO L168 Benchmark]: RCFGBuilder took 136.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-08 23:58:23,965 INFO L168 Benchmark]: BuchiAutomizer took 40903.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 145.8 MB). Free memory was 1.1 GB in the beginning and 838.6 MB in the end (delta: 282.9 MB). Peak memory consumption was 428.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:58:23,965 INFO L168 Benchmark]: Witness Printer took 3.09 ms. Allocated memory is still 1.3 GB. Free memory is still 838.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:58:23,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.18 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.90 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.60 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 136.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 40903.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 145.8 MB). Free memory was 1.1 GB in the beginning and 838.6 MB in the end (delta: 282.9 MB). Peak memory consumption was 428.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.09 ms. Allocated memory is still 1.3 GB. Free memory is still 838.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 40.8s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 37.8s. Construction of modules took 0.4s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 99 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 155 SDtfs, 273 SDslu, 162 SDs, 0 SdLazy, 735 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...