./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/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 595c6555624af5bbcf79585a20acb2500e3eeee8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:24:15,513 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:24:15,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:24:15,524 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:24:15,524 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:24:15,525 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:24:15,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:24:15,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:24:15,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:24:15,530 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:24:15,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:24:15,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:24:15,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:24:15,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:24:15,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:24:15,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:24:15,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:24:15,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:24:15,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:24:15,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:24:15,540 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:24:15,541 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:24:15,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:24:15,543 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:24:15,544 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:24:15,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:24:15,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:24:15,546 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:24:15,547 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:24:15,548 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:24:15,548 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:24:15,549 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:24:15,549 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:24:15,549 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:24:15,550 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:24:15,550 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:24:15,551 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-10 04:24:15,563 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:24:15,564 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:24:15,565 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:24:15,565 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:24:15,565 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:24:15,565 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 04:24:15,565 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 04:24:15,565 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 04:24:15,566 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 04:24:15,566 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 04:24:15,566 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 04:24:15,566 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:24:15,566 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:24:15,566 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 04:24:15,567 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:24:15,568 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:24:15,568 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 04:24:15,568 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 04:24:15,568 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:24:15,568 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:24:15,568 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 04:24:15,569 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:24:15,569 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:24:15,569 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 04:24:15,570 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 04:24:15,570 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_6529539d-4b63-41a7-81dd-12ca33024cd6/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 -> 595c6555624af5bbcf79585a20acb2500e3eeee8 [2018-11-10 04:24:15,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:24:15,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:24:15,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:24:15,605 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:24:15,606 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:24:15,606 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6_true-unreach-call_true-termination.c [2018-11-10 04:24:15,646 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/data/6e5a59531/59862d55f1254b1d8489d1adf840e432/FLAG49cb294db [2018-11-10 04:24:16,006 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:24:16,007 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/sv-benchmarks/c/recursive-simple/fibo_2calls_6_true-unreach-call_true-termination.c [2018-11-10 04:24:16,012 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/data/6e5a59531/59862d55f1254b1d8489d1adf840e432/FLAG49cb294db [2018-11-10 04:24:16,022 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/data/6e5a59531/59862d55f1254b1d8489d1adf840e432 [2018-11-10 04:24:16,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:24:16,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:24:16,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:24:16,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:24:16,029 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:24:16,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fd796b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16, skipping insertion in model container [2018-11-10 04:24:16,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:24:16,050 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:24:16,162 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:24:16,164 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:24:16,176 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:24:16,186 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:24:16,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16 WrapperNode [2018-11-10 04:24:16,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:24:16,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:24:16,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:24:16,187 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:24:16,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:24:16,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:24:16,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:24:16,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:24:16,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... [2018-11-10 04:24:16,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:24:16,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:24:16,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:24:16,220 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:24:16,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:24:16,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:24:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-10 04:24:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-10 04:24:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-10 04:24:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-10 04:24:16,434 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:24:16,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:24:16 BoogieIcfgContainer [2018-11-10 04:24:16,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:24:16,436 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 04:24:16,436 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 04:24:16,439 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 04:24:16,440 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 04:24:16,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 04:24:16" (1/3) ... [2018-11-10 04:24:16,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c49161e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 04:24:16, skipping insertion in model container [2018-11-10 04:24:16,441 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 04:24:16,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:24:16" (2/3) ... [2018-11-10 04:24:16,442 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c49161e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 04:24:16, skipping insertion in model container [2018-11-10 04:24:16,442 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 04:24:16,442 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:24:16" (3/3) ... [2018-11-10 04:24:16,443 INFO L375 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_6_true-unreach-call_true-termination.c [2018-11-10 04:24:16,484 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:24:16,485 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 04:24:16,485 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 04:24:16,485 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 04:24:16,485 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:24:16,485 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:24:16,485 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 04:24:16,485 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:24:16,485 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 04:24:16,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states. [2018-11-10 04:24:16,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 04:24:16,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:16,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:16,521 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 04:24:16,521 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:16,522 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 04:24:16,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states. [2018-11-10 04:24:16,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 04:24:16,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:16,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:16,524 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 04:24:16,524 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:16,529 INFO L793 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 17#L37true call main_#t~ret4 := fibo1(main_~x~0);< 25#fibo1ENTRYtrue [2018-11-10 04:24:16,530 INFO L795 eck$LassoCheckResult]: Loop: 25#fibo1ENTRYtrue ~n := #in~n; 13#L8true assume !(~n < 1); 4#L10true assume !(~n == 1); 19#L13true call #t~ret0 := fibo2(~n - 1);< 11#fibo2ENTRYtrue ~n := #in~n; 28#L18true assume !(~n < 1); 26#L20true assume !(~n == 1); 3#L23true call #t~ret2 := fibo1(~n - 1);< 25#fibo1ENTRYtrue [2018-11-10 04:24:16,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:16,534 INFO L82 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2018-11-10 04:24:16,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:16,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:16,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:16,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:16,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:16,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:16,617 INFO L82 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2018-11-10 04:24:16,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:16,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:16,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:16,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:16,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:16,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2018-11-10 04:24:16,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:16,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:16,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:16,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:16,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:16,785 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:16,786 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:16,786 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:16,787 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:16,787 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:24:16,787 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:16,787 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:16,787 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:16,787 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration1_Loop [2018-11-10 04:24:16,788 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:16,788 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:16,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:16,910 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:16,910 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:16,914 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:16,914 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:16,920 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:16,921 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:16,938 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:16,938 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:16,941 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:16,941 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:16,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:16,959 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:16,961 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:16,961 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:16,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:16,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:16,982 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:16,982 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,000 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:17,000 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:17,003 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:17,003 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret3=0} Honda state: {fibo2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:17,021 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:17,023 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:17,023 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,053 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:17,053 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:17,062 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:17,062 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,081 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:17,081 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:17,084 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:17,084 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret1=0} Honda state: {fibo1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,102 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:17,102 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:17,104 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:17,104 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret0=0} Honda state: {fibo1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:17,122 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,142 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:24:17,142 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:17,202 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:24:17,203 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:17,203 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:17,204 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:17,204 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:17,204 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:24:17,204 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:17,204 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:17,204 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:17,204 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration1_Loop [2018-11-10 04:24:17,204 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:17,204 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:17,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:17,300 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:17,303 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:24:17,304 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,306 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,306 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,306 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,307 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,308 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,308 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,312 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,312 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,313 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,313 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,313 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,313 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,313 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,314 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,314 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,315 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,316 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,316 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,316 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,318 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,318 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,318 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,319 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,319 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,320 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,320 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,320 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,321 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,321 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,321 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,321 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,321 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,322 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,324 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,325 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,325 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,325 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,326 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,326 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,326 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,326 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,327 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,328 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,328 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,329 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,329 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,329 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,329 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,330 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,334 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,334 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,336 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,336 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,337 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,337 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,337 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,337 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,337 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,338 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,338 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,341 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,342 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,342 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,342 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,343 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,343 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,343 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,343 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,345 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:17,345 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:17,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:17,349 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:17,349 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:17,349 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:17,350 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:17,350 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:17,350 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:17,358 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:24:17,363 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 04:24:17,363 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:24:17,365 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:24:17,365 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 04:24:17,365 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:24:17,366 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2018-11-10 04:24:17,367 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 04:24:17,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:17,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:17,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:17,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-10 04:24:17,511 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states. Second operand 6 states. [2018-11-10 04:24:17,682 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states.. Second operand 6 states. Result 84 states and 116 transitions. Complement of second has 24 states. [2018-11-10 04:24:17,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-10 04:24:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-10 04:24:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2018-11-10 04:24:17,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-10 04:24:17,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:17,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-10 04:24:17,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:17,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2018-11-10 04:24:17,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:17,691 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2018-11-10 04:24:17,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 04:24:17,704 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2018-11-10 04:24:17,705 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-11-10 04:24:17,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2018-11-10 04:24:17,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2018-11-10 04:24:17,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:17,708 INFO L705 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2018-11-10 04:24:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2018-11-10 04:24:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2018-11-10 04:24:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-10 04:24:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2018-11-10 04:24:17,739 INFO L728 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2018-11-10 04:24:17,739 INFO L608 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2018-11-10 04:24:17,739 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 04:24:17,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2018-11-10 04:24:17,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 04:24:17,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:17,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:17,743 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:17,743 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:17,744 INFO L793 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 227#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 214#L37 call main_#t~ret4 := fibo1(main_~x~0);< 216#fibo1ENTRY ~n := #in~n; 228#L8 assume !(~n < 1); 213#L10 assume !(~n == 1); 205#L13 call #t~ret0 := fibo2(~n - 1);< 221#fibo2ENTRY ~n := #in~n; 248#L18 assume !(~n < 1); 249#L20 assume !(~n == 1); 200#L23 call #t~ret2 := fibo1(~n - 1);< 203#fibo1ENTRY ~n := #in~n; 229#L8 assume ~n < 1;#res := 0; 212#fibo1FINAL assume true; 219#fibo1EXIT >#46#return; 215#L23-1 [2018-11-10 04:24:17,744 INFO L795 eck$LassoCheckResult]: Loop: 215#L23-1 call #t~ret3 := fibo1(~n - 2);< 199#fibo1ENTRY ~n := #in~n; 244#L8 assume !(~n < 1); 242#L10 assume !(~n == 1); 198#L13 call #t~ret0 := fibo2(~n - 1);< 222#fibo2ENTRY ~n := #in~n; 241#L18 assume !(~n < 1); 237#L20 assume !(~n == 1); 196#L23 call #t~ret2 := fibo1(~n - 1);< 199#fibo1ENTRY ~n := #in~n; 244#L8 assume ~n < 1;#res := 0; 224#fibo1FINAL assume true; 225#fibo1EXIT >#46#return; 215#L23-1 [2018-11-10 04:24:17,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:17,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2018-11-10 04:24:17,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:17,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:17,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:17,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:17,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:24:17,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:24:17,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:24:17,821 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:17,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2018-11-10 04:24:17,821 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:17,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:17,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:17,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:17,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:24:17,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:24:17,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:24:17,871 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 04:24:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:24:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:24:17,874 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand 6 states. [2018-11-10 04:24:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:17,942 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2018-11-10 04:24:17,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:24:17,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2018-11-10 04:24:17,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 04:24:17,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2018-11-10 04:24:17,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2018-11-10 04:24:17,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2018-11-10 04:24:17,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2018-11-10 04:24:17,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:17,952 INFO L705 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2018-11-10 04:24:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2018-11-10 04:24:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2018-11-10 04:24:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-10 04:24:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2018-11-10 04:24:17,960 INFO L728 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2018-11-10 04:24:17,960 INFO L608 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2018-11-10 04:24:17,961 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 04:24:17,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2018-11-10 04:24:17,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-10 04:24:17,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:17,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:17,963 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:17,963 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:17,964 INFO L793 eck$LassoCheckResult]: Stem: 365#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 343#L37 call main_#t~ret4 := fibo1(main_~x~0);< 344#fibo1ENTRY ~n := #in~n; 372#L8 assume !(~n < 1); 348#L10 assume !(~n == 1); 339#L13 call #t~ret0 := fibo2(~n - 1);< 358#fibo2ENTRY ~n := #in~n; 388#L18 assume !(~n < 1); 389#L20 assume !(~n == 1); 337#L23 call #t~ret2 := fibo1(~n - 1);< 342#fibo1ENTRY ~n := #in~n; 367#L8 assume !(~n < 1); 383#L10 assume ~n == 1;#res := 1; 382#fibo1FINAL assume true; 378#fibo1EXIT >#46#return; 346#L23-1 [2018-11-10 04:24:17,964 INFO L795 eck$LassoCheckResult]: Loop: 346#L23-1 call #t~ret3 := fibo1(~n - 2);< 336#fibo1ENTRY ~n := #in~n; 366#L8 assume !(~n < 1); 345#L10 assume !(~n == 1); 335#L13 call #t~ret0 := fibo2(~n - 1);< 381#fibo2ENTRY ~n := #in~n; 386#L18 assume !(~n < 1); 376#L20 assume !(~n == 1); 333#L23 call #t~ret2 := fibo1(~n - 1);< 336#fibo1ENTRY ~n := #in~n; 366#L8 assume !(~n < 1); 345#L10 assume ~n == 1;#res := 1; 347#fibo1FINAL assume true; 362#fibo1EXIT >#46#return; 346#L23-1 [2018-11-10 04:24:17,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2018-11-10 04:24:17,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:17,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:17,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:17,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:17,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:18,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:18,028 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/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 [2018-11-10 04:24:18,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:18,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:18,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:18,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 04:24:18,074 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:18,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2018-11-10 04:24:18,075 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:18,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:18,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:18,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:18,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:18,188 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:18,188 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:18,188 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:18,189 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:18,189 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:24:18,189 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:18,189 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:18,189 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:18,189 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration3_Loop [2018-11-10 04:24:18,189 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:18,190 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:18,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:18,234 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:18,234 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:18,237 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:18,238 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:18,240 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:18,240 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:18,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:18,259 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:18,262 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:18,262 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:18,280 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:18,281 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:18,303 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:24:18,303 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:19,223 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:24:19,225 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:19,225 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:19,225 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:19,225 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:19,225 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:24:19,225 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:19,225 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:19,225 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:19,226 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration3_Loop [2018-11-10 04:24:19,226 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:19,226 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:19,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:19,277 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:19,277 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:24:19,277 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:19,278 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:19,278 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:19,278 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:19,278 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:19,279 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:19,279 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:19,279 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:19,281 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:19,282 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:19,282 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:19,283 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:19,283 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:19,283 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:19,283 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:19,283 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:19,284 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:19,286 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:19,287 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:19,288 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:19,288 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:19,288 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:19,288 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:19,288 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:19,289 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:19,289 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:19,293 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:24:19,296 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 04:24:19,296 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:24:19,297 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:24:19,297 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 04:24:19,297 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:24:19,297 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2018-11-10 04:24:19,298 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 04:24:19,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:19,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:19,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:19,413 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 [2018-11-10 04:24:19,413 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand 9 states. [2018-11-10 04:24:19,632 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand 9 states. Result 191 states and 263 transitions. Complement of second has 26 states. [2018-11-10 04:24:19,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2018-11-10 04:24:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-10 04:24:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 68 transitions. [2018-11-10 04:24:19,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 68 transitions. Stem has 16 letters. Loop has 14 letters. [2018-11-10 04:24:19,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:19,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 68 transitions. Stem has 30 letters. Loop has 14 letters. [2018-11-10 04:24:19,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:19,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 68 transitions. Stem has 16 letters. Loop has 28 letters. [2018-11-10 04:24:19,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:19,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2018-11-10 04:24:19,638 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-11-10 04:24:19,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2018-11-10 04:24:19,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2018-11-10 04:24:19,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2018-11-10 04:24:19,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2018-11-10 04:24:19,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:19,644 INFO L705 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2018-11-10 04:24:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2018-11-10 04:24:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2018-11-10 04:24:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-11-10 04:24:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2018-11-10 04:24:19,655 INFO L728 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2018-11-10 04:24:19,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:24:19,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:24:19,655 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand 9 states. [2018-11-10 04:24:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:19,738 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2018-11-10 04:24:19,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:24:19,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2018-11-10 04:24:19,742 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-11-10 04:24:19,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2018-11-10 04:24:19,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2018-11-10 04:24:19,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2018-11-10 04:24:19,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2018-11-10 04:24:19,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:19,747 INFO L705 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2018-11-10 04:24:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2018-11-10 04:24:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2018-11-10 04:24:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-11-10 04:24:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2018-11-10 04:24:19,760 INFO L728 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2018-11-10 04:24:19,760 INFO L608 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2018-11-10 04:24:19,760 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 04:24:19,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2018-11-10 04:24:19,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-11-10 04:24:19,763 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:19,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:19,767 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-10 04:24:19,767 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-10 04:24:19,768 INFO L793 eck$LassoCheckResult]: Stem: 1176#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1171#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 1154#L37 call main_#t~ret4 := fibo1(main_~x~0);< 1155#fibo1ENTRY ~n := #in~n; 1219#L8 assume !(~n < 1); 1218#L10 assume !(~n == 1); 1132#L13 call #t~ret0 := fibo2(~n - 1);< 1164#fibo2ENTRY ~n := #in~n; 1281#L18 assume !(~n < 1); 1280#L20 assume !(~n == 1); 1167#L23 call #t~ret2 := fibo1(~n - 1);< 1130#fibo1ENTRY ~n := #in~n; 1216#L8 assume !(~n < 1); 1215#L10 assume !(~n == 1); 1128#L13 call #t~ret0 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1212#L18 assume !(~n < 1); 1213#L20 assume !(~n == 1); 1127#L23 call #t~ret2 := fibo1(~n - 1);< 1130#fibo1ENTRY ~n := #in~n; 1216#L8 assume !(~n < 1); 1215#L10 assume !(~n == 1); 1128#L13 call #t~ret0 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1212#L18 assume ~n < 1;#res := 0; 1211#fibo2FINAL assume true; 1207#fibo2EXIT >#50#return; 1129#L13-1 call #t~ret1 := fibo2(~n - 2);< 1168#fibo2ENTRY ~n := #in~n; 1178#L18 assume !(~n < 1); 1185#L20 assume !(~n == 1); 1127#L23 call #t~ret2 := fibo1(~n - 1);< 1130#fibo1ENTRY ~n := #in~n; 1217#L8 assume !(~n < 1); 1223#L10 assume ~n == 1;#res := 1; 1222#fibo1FINAL assume true; 1220#fibo1EXIT >#46#return; 1204#L23-1 call #t~ret3 := fibo1(~n - 2);< 1136#fibo1ENTRY ~n := #in~n; 1210#L8 assume !(~n < 1); 1206#L10 assume !(~n == 1); 1134#L13 call #t~ret0 := fibo2(~n - 1);< 1203#fibo2ENTRY ~n := #in~n; 1200#L18 assume ~n < 1;#res := 0; 1201#fibo2FINAL assume true; 1209#fibo2EXIT >#50#return; 1135#L13-1 call #t~ret1 := fibo2(~n - 2);< 1203#fibo2ENTRY ~n := #in~n; 1200#L18 assume !(~n < 1); 1196#L20 assume ~n == 1;#res := 1; 1137#fibo2FINAL assume true; 1138#fibo2EXIT >#52#return; 1266#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 1279#fibo1FINAL assume true; 1276#fibo1EXIT >#48#return; 1274#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 1271#fibo2FINAL assume true; 1268#fibo2EXIT >#52#return; 1266#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 1279#fibo1FINAL assume true; 1276#fibo1EXIT >#46#return; 1162#L23-1 call #t~ret3 := fibo1(~n - 2);< 1126#fibo1ENTRY ~n := #in~n; 1263#L8 assume !(~n < 1); 1260#L10 assume !(~n == 1); 1123#L13 call #t~ret0 := fibo2(~n - 1);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume ~n < 1;#res := 0; 1184#fibo2FINAL assume true; 1269#fibo2EXIT >#50#return; 1125#L13-1 call #t~ret1 := fibo2(~n - 2);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume ~n < 1;#res := 0; 1184#fibo2FINAL assume true; 1269#fibo2EXIT >#52#return; 1266#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 1279#fibo1FINAL assume true; 1276#fibo1EXIT >#48#return; 1274#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 1271#fibo2FINAL assume true; 1268#fibo2EXIT >#50#return; 1125#L13-1 [2018-11-10 04:24:19,768 INFO L795 eck$LassoCheckResult]: Loop: 1125#L13-1 call #t~ret1 := fibo2(~n - 2);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume !(~n < 1); 1183#L20 assume !(~n == 1); 1122#L23 call #t~ret2 := fibo1(~n - 1);< 1126#fibo1ENTRY ~n := #in~n; 1263#L8 assume !(~n < 1); 1260#L10 assume !(~n == 1); 1123#L13 call #t~ret0 := fibo2(~n - 1);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume !(~n < 1); 1183#L20 assume !(~n == 1); 1122#L23 call #t~ret2 := fibo1(~n - 1);< 1126#fibo1ENTRY ~n := #in~n; 1263#L8 assume !(~n < 1); 1260#L10 assume !(~n == 1); 1123#L13 call #t~ret0 := fibo2(~n - 1);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume ~n < 1;#res := 0; 1184#fibo2FINAL assume true; 1269#fibo2EXIT >#50#return; 1125#L13-1 call #t~ret1 := fibo2(~n - 2);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume ~n < 1;#res := 0; 1184#fibo2FINAL assume true; 1269#fibo2EXIT >#52#return; 1266#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 1279#fibo1FINAL assume true; 1276#fibo1EXIT >#46#return; 1162#L23-1 call #t~ret3 := fibo1(~n - 2);< 1126#fibo1ENTRY ~n := #in~n; 1263#L8 assume !(~n < 1); 1260#L10 assume !(~n == 1); 1123#L13 call #t~ret0 := fibo2(~n - 1);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume ~n < 1;#res := 0; 1184#fibo2FINAL assume true; 1269#fibo2EXIT >#50#return; 1125#L13-1 call #t~ret1 := fibo2(~n - 2);< 1163#fibo2ENTRY ~n := #in~n; 1177#L18 assume ~n < 1;#res := 0; 1184#fibo2FINAL assume true; 1269#fibo2EXIT >#52#return; 1266#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 1279#fibo1FINAL assume true; 1276#fibo1EXIT >#48#return; 1274#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 1271#fibo2FINAL assume true; 1268#fibo2EXIT >#50#return; 1125#L13-1 [2018-11-10 04:24:19,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:19,768 INFO L82 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2018-11-10 04:24:19,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:19,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:19,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:19,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:19,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-10 04:24:19,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:19,829 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:19,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:19,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-11-10 04:24:19,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:24:19,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2018-11-10 04:24:19,908 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:19,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2018-11-10 04:24:19,908 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:19,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:19,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:19,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:19,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-10 04:24:19,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:19,970 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:19,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:20,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 04:24:20,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:24:20,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2018-11-10 04:24:20,043 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 04:24:20,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:24:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:24:20,043 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand 6 states. [2018-11-10 04:24:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:20,086 INFO L93 Difference]: Finished difference Result 184 states and 236 transitions. [2018-11-10 04:24:20,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:24:20,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 236 transitions. [2018-11-10 04:24:20,089 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-11-10 04:24:20,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 172 states and 222 transitions. [2018-11-10 04:24:20,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2018-11-10 04:24:20,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2018-11-10 04:24:20,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 172 states and 222 transitions. [2018-11-10 04:24:20,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:20,093 INFO L705 BuchiCegarLoop]: Abstraction has 172 states and 222 transitions. [2018-11-10 04:24:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states and 222 transitions. [2018-11-10 04:24:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2018-11-10 04:24:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-11-10 04:24:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 206 transitions. [2018-11-10 04:24:20,105 INFO L728 BuchiCegarLoop]: Abstraction has 158 states and 206 transitions. [2018-11-10 04:24:20,105 INFO L608 BuchiCegarLoop]: Abstraction has 158 states and 206 transitions. [2018-11-10 04:24:20,105 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 04:24:20,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158 states and 206 transitions. [2018-11-10 04:24:20,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-11-10 04:24:20,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:20,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:20,111 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-10 04:24:20,111 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-10 04:24:20,112 INFO L793 eck$LassoCheckResult]: Stem: 1925#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1919#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 1894#L37 call main_#t~ret4 := fibo1(main_~x~0);< 1900#fibo1ENTRY ~n := #in~n; 1932#L8 assume !(~n < 1); 1893#L10 assume !(~n == 1); 1895#L13 call #t~ret0 := fibo2(~n - 1);< 1909#fibo2ENTRY ~n := #in~n; 1927#L18 assume !(~n < 1); 1934#L20 assume !(~n == 1); 1915#L23 call #t~ret2 := fibo1(~n - 1);< 1881#fibo1ENTRY ~n := #in~n; 1923#L8 assume !(~n < 1); 1968#L10 assume !(~n == 1); 1879#L13 call #t~ret0 := fibo2(~n - 1);< 1963#fibo2ENTRY ~n := #in~n; 1967#L18 assume !(~n < 1); 1965#L20 assume !(~n == 1); 1878#L23 call #t~ret2 := fibo1(~n - 1);< 1881#fibo1ENTRY ~n := #in~n; 1923#L8 assume !(~n < 1); 1968#L10 assume !(~n == 1); 1879#L13 call #t~ret0 := fibo2(~n - 1);< 1963#fibo2ENTRY ~n := #in~n; 1967#L18 assume !(~n < 1); 1965#L20 assume ~n == 1;#res := 1; 1962#fibo2FINAL assume true; 1930#fibo2EXIT >#50#return; 1880#L13-1 call #t~ret1 := fibo2(~n - 2);< 1916#fibo2ENTRY ~n := #in~n; 2012#L18 assume !(~n < 1); 2011#L20 assume !(~n == 1); 1878#L23 call #t~ret2 := fibo1(~n - 1);< 1881#fibo1ENTRY ~n := #in~n; 1924#L8 assume !(~n < 1); 1971#L10 assume ~n == 1;#res := 1; 1970#fibo1FINAL assume true; 1969#fibo1EXIT >#46#return; 1891#L23-1 call #t~ret3 := fibo1(~n - 2);< 1899#fibo1ENTRY ~n := #in~n; 1959#L8 assume !(~n < 1); 1957#L10 assume !(~n == 1); 1898#L13 call #t~ret0 := fibo2(~n - 1);< 1955#fibo2ENTRY ~n := #in~n; 1953#L18 assume !(~n < 1); 1947#L20 assume ~n == 1;#res := 1; 1948#fibo2FINAL assume true; 1928#fibo2EXIT >#50#return; 1929#L13-1 call #t~ret1 := fibo2(~n - 2);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume ~n < 1;#res := 0; 1937#fibo2FINAL assume true; 2018#fibo2EXIT >#52#return; 1988#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 2017#fibo1FINAL assume true; 2007#fibo1EXIT >#48#return; 2006#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 1993#fibo2FINAL assume true; 1987#fibo2EXIT >#52#return; 1988#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 2017#fibo1FINAL assume true; 2007#fibo1EXIT >#46#return; 1991#L23-1 call #t~ret3 := fibo1(~n - 2);< 2002#fibo1ENTRY ~n := #in~n; 1998#L8 assume !(~n < 1); 1995#L10 assume !(~n == 1); 1936#L13 call #t~ret0 := fibo2(~n - 1);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume !(~n < 1); 1938#L20 assume ~n == 1;#res := 1; 2005#fibo2FINAL assume true; 2004#fibo2EXIT >#50#return; 1929#L13-1 call #t~ret1 := fibo2(~n - 2);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume ~n < 1;#res := 0; 1937#fibo2FINAL assume true; 2018#fibo2EXIT >#52#return; 1988#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 2017#fibo1FINAL assume true; 2007#fibo1EXIT >#48#return; 2006#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 1993#fibo2FINAL assume true; 1987#fibo2EXIT >#50#return; 1929#L13-1 [2018-11-10 04:24:20,112 INFO L795 eck$LassoCheckResult]: Loop: 1929#L13-1 call #t~ret1 := fibo2(~n - 2);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume !(~n < 1); 1938#L20 assume !(~n == 1); 1990#L23 call #t~ret2 := fibo1(~n - 1);< 2002#fibo1ENTRY ~n := #in~n; 1998#L8 assume !(~n < 1); 1995#L10 assume !(~n == 1); 1936#L13 call #t~ret0 := fibo2(~n - 1);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume !(~n < 1); 1938#L20 assume !(~n == 1); 1990#L23 call #t~ret2 := fibo1(~n - 1);< 2002#fibo1ENTRY ~n := #in~n; 1998#L8 assume !(~n < 1); 1995#L10 assume !(~n == 1); 1936#L13 call #t~ret0 := fibo2(~n - 1);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume !(~n < 1); 1938#L20 assume ~n == 1;#res := 1; 2005#fibo2FINAL assume true; 2004#fibo2EXIT >#50#return; 1929#L13-1 call #t~ret1 := fibo2(~n - 2);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume ~n < 1;#res := 0; 1937#fibo2FINAL assume true; 2018#fibo2EXIT >#52#return; 1988#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 2017#fibo1FINAL assume true; 2007#fibo1EXIT >#46#return; 1991#L23-1 call #t~ret3 := fibo1(~n - 2);< 2002#fibo1ENTRY ~n := #in~n; 1998#L8 assume !(~n < 1); 1995#L10 assume !(~n == 1); 1936#L13 call #t~ret0 := fibo2(~n - 1);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume !(~n < 1); 1938#L20 assume ~n == 1;#res := 1; 2005#fibo2FINAL assume true; 2004#fibo2EXIT >#50#return; 1929#L13-1 call #t~ret1 := fibo2(~n - 2);< 1914#fibo2ENTRY ~n := #in~n; 1935#L18 assume ~n < 1;#res := 0; 1937#fibo2FINAL assume true; 2018#fibo2EXIT >#52#return; 1988#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 2017#fibo1FINAL assume true; 2007#fibo1EXIT >#48#return; 2006#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 1993#fibo2FINAL assume true; 1987#fibo2EXIT >#50#return; 1929#L13-1 [2018-11-10 04:24:20,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:20,112 INFO L82 PathProgramCache]: Analyzing trace with hash 821073247, now seen corresponding path program 2 times [2018-11-10 04:24:20,112 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:20,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:20,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:20,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 31 proven. 84 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-10 04:24:20,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:20,226 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/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 [2018-11-10 04:24:20,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:24:20,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:24:20,253 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:24:20,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 31 proven. 84 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-10 04:24:20,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:20,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-10 04:24:20,289 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:20,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2018-11-10 04:24:20,289 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:20,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:20,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:20,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-10 04:24:20,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:20,403 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:20,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:20,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-10 04:24:20,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:20,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2018-11-10 04:24:20,504 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 04:24:20,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 04:24:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:24:20,505 INFO L87 Difference]: Start difference. First operand 158 states and 206 transitions. cyclomatic complexity: 53 Second operand 13 states. [2018-11-10 04:24:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:20,772 INFO L93 Difference]: Finished difference Result 209 states and 285 transitions. [2018-11-10 04:24:20,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 04:24:20,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 209 states and 285 transitions. [2018-11-10 04:24:20,774 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2018-11-10 04:24:20,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 209 states to 209 states and 285 transitions. [2018-11-10 04:24:20,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2018-11-10 04:24:20,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2018-11-10 04:24:20,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 209 states and 285 transitions. [2018-11-10 04:24:20,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:20,781 INFO L705 BuchiCegarLoop]: Abstraction has 209 states and 285 transitions. [2018-11-10 04:24:20,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states and 285 transitions. [2018-11-10 04:24:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2018-11-10 04:24:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-10 04:24:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 263 transitions. [2018-11-10 04:24:20,792 INFO L728 BuchiCegarLoop]: Abstraction has 192 states and 263 transitions. [2018-11-10 04:24:20,792 INFO L608 BuchiCegarLoop]: Abstraction has 192 states and 263 transitions. [2018-11-10 04:24:20,792 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 04:24:20,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 263 transitions. [2018-11-10 04:24:20,794 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2018-11-10 04:24:20,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:20,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:20,796 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:20,796 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:20,796 INFO L793 eck$LassoCheckResult]: Stem: 2745#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2738#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 2708#L37 call main_#t~ret4 := fibo1(main_~x~0);< 2709#fibo1ENTRY ~n := #in~n; 2785#L8 assume !(~n < 1); 2784#L10 assume !(~n == 1); 2727#L13 call #t~ret0 := fibo2(~n - 1);< 2728#fibo2ENTRY ~n := #in~n; 2747#L18 assume !(~n < 1); 2753#L20 assume !(~n == 1); 2732#L23 call #t~ret2 := fibo1(~n - 1);< 2840#fibo1ENTRY ~n := #in~n; 2841#L8 assume !(~n < 1); 2838#L10 assume !(~n == 1); 2698#L13 call #t~ret0 := fibo2(~n - 1);< 2781#fibo2ENTRY ~n := #in~n; 2845#L18 assume !(~n < 1); 2844#L20 assume ~n == 1;#res := 1; 2697#fibo2FINAL assume true; 2699#fibo2EXIT >#50#return; 2693#L13-1 call #t~ret1 := fibo2(~n - 2);< 2734#fibo2ENTRY ~n := #in~n; 2846#L18 assume !(~n < 1); 2752#L20 assume !(~n == 1); 2691#L23 call #t~ret2 := fibo1(~n - 1);< 2694#fibo1ENTRY ~n := #in~n; 2743#L8 assume !(~n < 1); 2707#L10 assume !(~n == 1); 2692#L13 call #t~ret0 := fibo2(~n - 1);< 2787#fibo2ENTRY ~n := #in~n; 2786#L18 assume !(~n < 1); 2783#L20 assume !(~n == 1); 2691#L23 call #t~ret2 := fibo1(~n - 1);< 2694#fibo1ENTRY ~n := #in~n; 2744#L8 assume !(~n < 1); 2790#L10 assume ~n == 1;#res := 1; 2789#fibo1FINAL assume true; 2788#fibo1EXIT >#46#return; 2741#L23-1 call #t~ret3 := fibo1(~n - 2);< 2739#fibo1ENTRY ~n := #in~n; 2742#L8 assume ~n < 1;#res := 0; 2875#fibo1FINAL assume true; 2825#fibo1EXIT >#48#return; 2821#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 2820#fibo2FINAL assume true; 2810#fibo2EXIT >#50#return; 2807#L13-1 [2018-11-10 04:24:20,796 INFO L795 eck$LassoCheckResult]: Loop: 2807#L13-1 call #t~ret1 := fibo2(~n - 2);< 2818#fibo2ENTRY ~n := #in~n; 2864#L18 assume !(~n < 1); 2862#L20 assume !(~n == 1); 2813#L23 call #t~ret2 := fibo1(~n - 1);< 2834#fibo1ENTRY ~n := #in~n; 2831#L8 assume !(~n < 1); 2829#L10 assume !(~n == 1); 2808#L13 call #t~ret0 := fibo2(~n - 1);< 2818#fibo2ENTRY ~n := #in~n; 2864#L18 assume !(~n < 1); 2862#L20 assume !(~n == 1); 2813#L23 call #t~ret2 := fibo1(~n - 1);< 2834#fibo1ENTRY ~n := #in~n; 2831#L8 assume !(~n < 1); 2829#L10 assume !(~n == 1); 2808#L13 call #t~ret0 := fibo2(~n - 1);< 2818#fibo2ENTRY ~n := #in~n; 2864#L18 assume !(~n < 1); 2862#L20 assume ~n == 1;#res := 1; 2848#fibo2FINAL assume true; 2823#fibo2EXIT >#50#return; 2807#L13-1 call #t~ret1 := fibo2(~n - 2);< 2818#fibo2ENTRY ~n := #in~n; 2864#L18 assume ~n < 1;#res := 0; 2851#fibo2FINAL assume true; 2849#fibo2EXIT >#52#return; 2809#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 2860#fibo1FINAL assume true; 2836#fibo1EXIT >#46#return; 2815#L23-1 call #t~ret3 := fibo1(~n - 2);< 2834#fibo1ENTRY ~n := #in~n; 2831#L8 assume ~n < 1;#res := 0; 2832#fibo1FINAL assume true; 2861#fibo1EXIT >#48#return; 2827#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 2819#fibo2FINAL assume true; 2806#fibo2EXIT >#50#return; 2807#L13-1 [2018-11-10 04:24:20,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1519288695, now seen corresponding path program 1 times [2018-11-10 04:24:20,797 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:20,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:20,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:20,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-10 04:24:20,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:20,864 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:20,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:20,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-10 04:24:20,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:20,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 14 [2018-11-10 04:24:20,991 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:20,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1513837346, now seen corresponding path program 1 times [2018-11-10 04:24:20,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:20,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:20,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:20,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 04:24:21,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:21,051 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:21,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:21,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 04:24:21,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:21,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2018-11-10 04:24:21,134 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 04:24:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:24:21,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:24:21,135 INFO L87 Difference]: Start difference. First operand 192 states and 263 transitions. cyclomatic complexity: 78 Second operand 11 states. [2018-11-10 04:24:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:21,228 INFO L93 Difference]: Finished difference Result 229 states and 318 transitions. [2018-11-10 04:24:21,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 04:24:21,229 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 229 states and 318 transitions. [2018-11-10 04:24:21,232 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2018-11-10 04:24:21,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 229 states to 229 states and 318 transitions. [2018-11-10 04:24:21,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 154 [2018-11-10 04:24:21,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 154 [2018-11-10 04:24:21,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 318 transitions. [2018-11-10 04:24:21,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:21,237 INFO L705 BuchiCegarLoop]: Abstraction has 229 states and 318 transitions. [2018-11-10 04:24:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 318 transitions. [2018-11-10 04:24:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 211. [2018-11-10 04:24:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-11-10 04:24:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 293 transitions. [2018-11-10 04:24:21,248 INFO L728 BuchiCegarLoop]: Abstraction has 211 states and 293 transitions. [2018-11-10 04:24:21,249 INFO L608 BuchiCegarLoop]: Abstraction has 211 states and 293 transitions. [2018-11-10 04:24:21,249 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-10 04:24:21,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 293 transitions. [2018-11-10 04:24:21,253 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2018-11-10 04:24:21,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:21,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:21,254 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:21,254 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:21,254 INFO L793 eck$LassoCheckResult]: Stem: 3439#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3438#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 3395#L37 call main_#t~ret4 := fibo1(main_~x~0);< 3396#fibo1ENTRY ~n := #in~n; 3496#L8 assume !(~n < 1); 3497#L10 assume !(~n == 1); 3427#L13 call #t~ret0 := fibo2(~n - 1);< 3428#fibo2ENTRY ~n := #in~n; 3464#L18 assume !(~n < 1); 3465#L20 assume !(~n == 1); 3403#L23 call #t~ret2 := fibo1(~n - 1);< 3441#fibo1ENTRY ~n := #in~n; 3443#L8 assume !(~n < 1); 3401#L10 assume !(~n == 1); 3404#L13 call #t~ret0 := fibo2(~n - 1);< 3447#fibo2ENTRY ~n := #in~n; 3448#L18 assume !(~n < 1); 3540#L20 assume ~n == 1;#res := 1; 3407#fibo2FINAL assume true; 3408#fibo2EXIT >#50#return; 3392#L13-1 call #t~ret1 := fibo2(~n - 2);< 3434#fibo2ENTRY ~n := #in~n; 3514#L18 assume !(~n < 1); 3460#L20 assume !(~n == 1); 3391#L23 call #t~ret2 := fibo1(~n - 1);< 3394#fibo1ENTRY ~n := #in~n; 3455#L8 assume !(~n < 1); 3456#L10 assume !(~n == 1); 3393#L13 call #t~ret0 := fibo2(~n - 1);< 3486#fibo2ENTRY ~n := #in~n; 3503#L18 assume !(~n < 1); 3502#L20 assume !(~n == 1); 3391#L23 call #t~ret2 := fibo1(~n - 1);< 3394#fibo1ENTRY ~n := #in~n; 3442#L8 assume !(~n < 1); 3510#L10 assume ~n == 1;#res := 1; 3511#fibo1FINAL assume true; 3578#fibo1EXIT >#46#return; 3494#L23-1 call #t~ret3 := fibo1(~n - 2);< 3576#fibo1ENTRY ~n := #in~n; 3593#L8 assume ~n < 1;#res := 0; 3582#fibo1FINAL assume true; 3574#fibo1EXIT >#48#return; 3572#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 3569#fibo2FINAL assume true; 3549#fibo2EXIT >#50#return; 3516#L13-1 [2018-11-10 04:24:21,254 INFO L795 eck$LassoCheckResult]: Loop: 3516#L13-1 call #t~ret1 := fibo2(~n - 2);< 3546#fibo2ENTRY ~n := #in~n; 3544#L18 assume !(~n < 1); 3541#L20 assume !(~n == 1); 3530#L23 call #t~ret2 := fibo1(~n - 1);< 3538#fibo1ENTRY ~n := #in~n; 3555#L8 assume !(~n < 1); 3547#L10 assume !(~n == 1); 3537#L13 call #t~ret0 := fibo2(~n - 1);< 3546#fibo2ENTRY ~n := #in~n; 3544#L18 assume !(~n < 1); 3541#L20 assume !(~n == 1); 3530#L23 call #t~ret2 := fibo1(~n - 1);< 3538#fibo1ENTRY ~n := #in~n; 3555#L8 assume !(~n < 1); 3547#L10 assume ~n == 1;#res := 1; 3548#fibo1FINAL assume true; 3561#fibo1EXIT >#46#return; 3531#L23-1 call #t~ret3 := fibo1(~n - 2);< 3538#fibo1ENTRY ~n := #in~n; 3555#L8 assume ~n < 1;#res := 0; 3556#fibo1FINAL assume true; 3559#fibo1EXIT >#48#return; 3560#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 3564#fibo2FINAL assume true; 3552#fibo2EXIT >#50#return; 3516#L13-1 [2018-11-10 04:24:21,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:21,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1519288695, now seen corresponding path program 2 times [2018-11-10 04:24:21,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:21,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:21,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:21,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:21,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-10 04:24:21,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:21,293 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:21,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:24:21,311 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:24:21,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:24:21,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-10 04:24:21,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:21,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 14 [2018-11-10 04:24:21,399 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:21,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:21,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2018-11-10 04:24:21,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:21,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:21,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:21,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:21,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:21,571 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:21,571 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:21,572 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:21,572 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:21,572 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:24:21,572 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,572 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:21,572 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:21,572 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration7_Loop [2018-11-10 04:24:21,572 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:21,572 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:21,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:21,628 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:21,628 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,631 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:21,631 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:21,650 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:21,650 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret0=1} Honda state: {fibo1_#t~ret0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,655 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:21,655 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:21,658 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:21,658 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,678 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:21,679 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:21,682 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:21,682 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:21,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:21,703 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:21,704 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,726 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:21,726 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:21,748 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:24:21,748 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:22,224 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:24:22,225 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:22,226 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:22,226 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:22,226 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:22,226 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:24:22,226 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:22,226 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:22,226 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:22,226 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration7_Loop [2018-11-10 04:24:22,226 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:22,226 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:22,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:22,269 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:22,269 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:24:22,270 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:22,270 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:22,270 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:22,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:22,271 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:22,271 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:22,271 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:22,271 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:22,271 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:22,272 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:22,272 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:22,272 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:22,272 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:22,272 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:22,272 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:22,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:22,272 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:22,273 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:22,273 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 [2018-11-10 04:24:22,273 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:22,273 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:22,273 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:22,273 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:22,274 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:22,274 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:22,274 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:22,275 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:22,275 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:22,276 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:22,276 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:22,276 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:22,276 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:22,276 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:22,276 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:22,277 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:22,277 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:22,277 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:22,278 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:22,278 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:22,278 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:22,278 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:22,278 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:22,278 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:22,279 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:22,281 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:24:22,282 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 04:24:22,282 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:24:22,283 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:24:22,283 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 04:24:22,283 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:24:22,283 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2018-11-10 04:24:22,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 04:24:22,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:22,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:22,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 04:24:22,434 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2018-11-10 04:24:22,434 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 211 states and 293 transitions. cyclomatic complexity: 89 Second operand 10 states. [2018-11-10 04:24:22,697 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 211 states and 293 transitions. cyclomatic complexity: 89. Second operand 10 states. Result 1106 states and 1518 transitions. Complement of second has 40 states. [2018-11-10 04:24:22,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2018-11-10 04:24:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-10 04:24:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 70 transitions. [2018-11-10 04:24:22,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 70 transitions. Stem has 46 letters. Loop has 26 letters. [2018-11-10 04:24:22,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:22,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 70 transitions. Stem has 72 letters. Loop has 26 letters. [2018-11-10 04:24:22,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:22,700 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 70 transitions. Stem has 46 letters. Loop has 52 letters. [2018-11-10 04:24:22,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:22,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1106 states and 1518 transitions. [2018-11-10 04:24:22,711 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 73 [2018-11-10 04:24:22,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1106 states to 890 states and 1248 transitions. [2018-11-10 04:24:22,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 431 [2018-11-10 04:24:22,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 442 [2018-11-10 04:24:22,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 890 states and 1248 transitions. [2018-11-10 04:24:22,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:22,719 INFO L705 BuchiCegarLoop]: Abstraction has 890 states and 1248 transitions. [2018-11-10 04:24:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states and 1248 transitions. [2018-11-10 04:24:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 830. [2018-11-10 04:24:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2018-11-10 04:24:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1162 transitions. [2018-11-10 04:24:22,741 INFO L728 BuchiCegarLoop]: Abstraction has 830 states and 1162 transitions. [2018-11-10 04:24:22,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 04:24:22,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:24:22,742 INFO L87 Difference]: Start difference. First operand 830 states and 1162 transitions. Second operand 14 states. [2018-11-10 04:24:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:22,916 INFO L93 Difference]: Finished difference Result 823 states and 1146 transitions. [2018-11-10 04:24:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:24:22,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 823 states and 1146 transitions. [2018-11-10 04:24:22,923 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 73 [2018-11-10 04:24:22,928 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 823 states to 793 states and 1106 transitions. [2018-11-10 04:24:22,928 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 409 [2018-11-10 04:24:22,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 409 [2018-11-10 04:24:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 793 states and 1106 transitions. [2018-11-10 04:24:22,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:22,930 INFO L705 BuchiCegarLoop]: Abstraction has 793 states and 1106 transitions. [2018-11-10 04:24:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states and 1106 transitions. [2018-11-10 04:24:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 728. [2018-11-10 04:24:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2018-11-10 04:24:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1025 transitions. [2018-11-10 04:24:22,946 INFO L728 BuchiCegarLoop]: Abstraction has 728 states and 1025 transitions. [2018-11-10 04:24:22,946 INFO L608 BuchiCegarLoop]: Abstraction has 728 states and 1025 transitions. [2018-11-10 04:24:22,946 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-10 04:24:22,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 728 states and 1025 transitions. [2018-11-10 04:24:22,949 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 73 [2018-11-10 04:24:22,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:22,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:22,950 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:22,950 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:22,950 INFO L793 eck$LassoCheckResult]: Stem: 6887#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 6882#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 6849#L37 call main_#t~ret4 := fibo1(main_~x~0);< 6850#fibo1ENTRY ~n := #in~n; 6961#L8 assume !(~n < 1); 6960#L10 assume !(~n == 1); 6956#L13 call #t~ret0 := fibo2(~n - 1);< 6959#fibo2ENTRY ~n := #in~n; 6958#L18 assume !(~n < 1); 6957#L20 assume !(~n == 1); 6934#L23 call #t~ret2 := fibo1(~n - 1);< 6955#fibo1ENTRY ~n := #in~n; 6953#L8 assume !(~n < 1); 6954#L10 assume !(~n == 1); 6923#L13 call #t~ret0 := fibo2(~n - 1);< 6933#fibo2ENTRY ~n := #in~n; 6932#L18 assume !(~n < 1); 6931#L20 assume !(~n == 1); 6929#L23 call #t~ret2 := fibo1(~n - 1);< 6930#fibo1ENTRY ~n := #in~n; 6941#L8 assume !(~n < 1); 6937#L10 assume ~n == 1;#res := 1; 6935#fibo1FINAL assume true; 6928#fibo1EXIT >#46#return; 6915#L23-1 call #t~ret3 := fibo1(~n - 2);< 6919#fibo1ENTRY ~n := #in~n; 6920#L8 assume !(~n < 1); 6914#L10 assume !(~n == 1); 6905#L13 call #t~ret0 := fibo2(~n - 1);< 6909#fibo2ENTRY ~n := #in~n; 6908#L18 assume !(~n < 1); 6904#L20 assume !(~n == 1); 6906#L23 call #t~ret2 := fibo1(~n - 1);< 7180#fibo1ENTRY ~n := #in~n; 7181#L8 assume !(~n < 1); 7172#L10 assume !(~n == 1); 7174#L13 call #t~ret0 := fibo2(~n - 1);< 7190#fibo2ENTRY [2018-11-10 04:24:22,950 INFO L795 eck$LassoCheckResult]: Loop: 7190#fibo2ENTRY ~n := #in~n; 7189#L18 assume !(~n < 1); 7187#L20 assume !(~n == 1); 7176#L23 call #t~ret2 := fibo1(~n - 1);< 7183#fibo1ENTRY ~n := #in~n; 7175#L8 assume !(~n < 1); 7179#L10 assume !(~n == 1); 7182#L13 call #t~ret0 := fibo2(~n - 1);< 7190#fibo2ENTRY [2018-11-10 04:24:22,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:22,950 INFO L82 PathProgramCache]: Analyzing trace with hash 11031926, now seen corresponding path program 1 times [2018-11-10 04:24:22,950 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:22,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:22,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:24:23,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:23,035 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:23,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:23,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 04:24:23,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:23,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2018-11-10 04:24:23,181 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 04:24:23,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:23,181 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2018-11-10 04:24:23,181 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:23,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:23,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:23,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:23,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:23,230 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:23,231 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:23,231 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:23,231 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:23,231 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:24:23,231 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,231 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:23,231 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:23,231 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration8_Loop [2018-11-10 04:24:23,231 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:23,231 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:23,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,286 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:23,286 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,295 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,297 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,298 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret1=0} Honda state: {fibo1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,319 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,319 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,321 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,321 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,339 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,339 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,341 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,341 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,358 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,358 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,361 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,361 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,378 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,381 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,381 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,398 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,398 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,401 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,401 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,419 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,419 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret0=0} Honda state: {fibo1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,437 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,437 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,439 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,439 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,456 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,456 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,458 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:23,458 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret3=0} Honda state: {fibo2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,487 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:23,487 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,507 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:24:23,507 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:23,554 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:24:23,555 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:23,555 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:23,556 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:23,556 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:23,556 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:24:23,556 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:23,556 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:23,556 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:23,556 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration8_Loop [2018-11-10 04:24:23,556 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:23,556 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:23,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:23,614 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:23,615 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:24:23,615 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,616 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,616 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,616 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,616 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,616 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,617 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,617 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,618 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,618 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,618 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,631 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,632 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,632 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,632 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,632 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,632 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,633 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,634 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,634 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,634 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,634 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,634 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,635 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,635 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,635 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,636 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,636 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,636 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,636 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,636 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,637 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,637 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,637 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,637 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,638 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,638 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,638 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,638 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,639 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,639 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,639 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,639 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,639 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,640 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,640 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,640 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,640 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,641 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,641 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,641 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,641 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,641 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,642 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,642 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,643 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,643 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,644 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,644 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,644 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,650 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,650 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,650 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,651 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,651 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,651 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,651 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,651 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,652 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:23,652 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:23,652 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:23,653 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:23,653 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:23,653 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:23,653 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:23,653 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:23,653 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:23,655 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:24:23,656 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 04:24:23,656 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:24:23,657 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:24:23,657 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 04:24:23,657 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:24:23,657 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2018-11-10 04:24:23,658 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 04:24:23,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:23,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:23,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:23,815 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2018-11-10 04:24:23,815 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 728 states and 1025 transitions. cyclomatic complexity: 318 Second operand 7 states. [2018-11-10 04:24:23,918 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 728 states and 1025 transitions. cyclomatic complexity: 318. Second operand 7 states. Result 852 states and 1156 transitions. Complement of second has 23 states. [2018-11-10 04:24:23,919 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 [2018-11-10 04:24:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2018-11-10 04:24:23,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 37 letters. Loop has 8 letters. [2018-11-10 04:24:23,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:23,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 45 letters. Loop has 8 letters. [2018-11-10 04:24:23,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:23,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 37 letters. Loop has 16 letters. [2018-11-10 04:24:23,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:23,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 852 states and 1156 transitions. [2018-11-10 04:24:23,927 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 64 [2018-11-10 04:24:23,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 852 states to 776 states and 1074 transitions. [2018-11-10 04:24:23,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 377 [2018-11-10 04:24:23,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 387 [2018-11-10 04:24:23,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 776 states and 1074 transitions. [2018-11-10 04:24:23,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:23,934 INFO L705 BuchiCegarLoop]: Abstraction has 776 states and 1074 transitions. [2018-11-10 04:24:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states and 1074 transitions. [2018-11-10 04:24:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 767. [2018-11-10 04:24:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2018-11-10 04:24:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1065 transitions. [2018-11-10 04:24:23,950 INFO L728 BuchiCegarLoop]: Abstraction has 767 states and 1065 transitions. [2018-11-10 04:24:23,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 04:24:23,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2018-11-10 04:24:23,951 INFO L87 Difference]: Start difference. First operand 767 states and 1065 transitions. Second operand 24 states. [2018-11-10 04:24:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:24,398 INFO L93 Difference]: Finished difference Result 309 states and 410 transitions. [2018-11-10 04:24:24,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 04:24:24,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 309 states and 410 transitions. [2018-11-10 04:24:24,402 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2018-11-10 04:24:24,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 309 states to 291 states and 387 transitions. [2018-11-10 04:24:24,406 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 210 [2018-11-10 04:24:24,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2018-11-10 04:24:24,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 291 states and 387 transitions. [2018-11-10 04:24:24,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:24,407 INFO L705 BuchiCegarLoop]: Abstraction has 291 states and 387 transitions. [2018-11-10 04:24:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states and 387 transitions. [2018-11-10 04:24:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 263. [2018-11-10 04:24:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-11-10 04:24:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 349 transitions. [2018-11-10 04:24:24,415 INFO L728 BuchiCegarLoop]: Abstraction has 263 states and 349 transitions. [2018-11-10 04:24:24,415 INFO L608 BuchiCegarLoop]: Abstraction has 263 states and 349 transitions. [2018-11-10 04:24:24,415 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-10 04:24:24,415 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 263 states and 349 transitions. [2018-11-10 04:24:24,416 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2018-11-10 04:24:24,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:24,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:24,417 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:24,417 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:24,418 INFO L793 eck$LassoCheckResult]: Stem: 9869#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 9864#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 9843#L37 call main_#t~ret4 := fibo1(main_~x~0);< 9844#fibo1ENTRY ~n := #in~n; 9873#L8 assume !(~n < 1); 9842#L10 assume !(~n == 1); 9823#L13 call #t~ret0 := fibo2(~n - 1);< 9856#fibo2ENTRY ~n := #in~n; 9871#L18 assume !(~n < 1); 9877#L20 assume !(~n == 1); 9822#L23 call #t~ret2 := fibo1(~n - 1);< 9824#fibo1ENTRY ~n := #in~n; 9929#L8 assume !(~n < 1); 9927#L10 assume !(~n == 1); 9914#L13 call #t~ret0 := fibo2(~n - 1);< 9925#fibo2ENTRY ~n := #in~n; 9923#L18 assume !(~n < 1); 9921#L20 assume !(~n == 1); 9896#L23 call #t~ret2 := fibo1(~n - 1);< 9909#fibo1ENTRY ~n := #in~n; 9910#L8 assume !(~n < 1); 10042#L10 assume !(~n == 1); 10040#L13 call #t~ret0 := fibo2(~n - 1);< 10041#fibo2ENTRY ~n := #in~n; 10049#L18 assume !(~n < 1); 10048#L20 assume ~n == 1;#res := 1; 10045#fibo2FINAL assume true; 10039#fibo2EXIT >#50#return; 10036#L13-1 call #t~ret1 := fibo2(~n - 2);< 10037#fibo2ENTRY ~n := #in~n; 10051#L18 assume ~n < 1;#res := 0; 10050#fibo2FINAL assume true; 10035#fibo2EXIT >#52#return; 10032#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 10028#fibo1FINAL assume true; 10026#fibo1EXIT >#46#return; 10023#L23-1 call #t~ret3 := fibo1(~n - 2);< 10025#fibo1ENTRY ~n := #in~n; 10038#L8 assume !(~n < 1); 10033#L10 assume ~n == 1;#res := 1; 10029#fibo1FINAL assume true; 10022#fibo1EXIT >#48#return; 9992#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 10058#fibo2FINAL assume true; 9970#fibo2EXIT >#50#return; 9964#L13-1 call #t~ret1 := fibo2(~n - 2);< 9968#fibo2ENTRY [2018-11-10 04:24:24,418 INFO L795 eck$LassoCheckResult]: Loop: 9968#fibo2ENTRY ~n := #in~n; 9996#L18 assume !(~n < 1); 9994#L20 assume !(~n == 1); 9951#L23 call #t~ret2 := fibo1(~n - 1);< 9958#fibo1ENTRY ~n := #in~n; 9978#L8 assume !(~n < 1); 9975#L10 assume !(~n == 1); 9965#L13 call #t~ret0 := fibo2(~n - 1);< 9968#fibo2ENTRY [2018-11-10 04:24:24,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash -177678082, now seen corresponding path program 3 times [2018-11-10 04:24:24,418 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:24,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:24,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:24,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:24,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:24,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2018-11-10 04:24:24,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:24,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:24,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:24,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:24,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:24,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:24,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1358906085, now seen corresponding path program 4 times [2018-11-10 04:24:24,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:24,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:24,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:24,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:24,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 04:24:24,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:24:24,545 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:24:24,553 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:24:24,562 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:24:24,562 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:24:24,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 04:24:24,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:24:24,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-10 04:24:24,638 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:24,639 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:24,639 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:24,639 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:24,639 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:24:24,639 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,639 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:24,639 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:24,639 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration9_Loop [2018-11-10 04:24:24,639 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:24,639 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:24,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,689 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:24,689 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,702 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:24,703 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:24,710 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:24,710 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret3=0} Honda state: {fibo2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,729 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:24,729 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:24,734 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:24,734 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,752 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:24,752 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:24,754 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:24,754 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:24,781 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:24,783 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:24,784 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret0=0} Honda state: {fibo1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,802 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:24,802 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:24,805 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:24,805 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,824 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:24,824 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,844 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:24:24,845 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:24,895 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:24:24,896 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:24,897 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:24,897 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:24,897 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:24,897 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:24:24,897 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:24,897 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:24,897 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:24,897 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration9_Loop [2018-11-10 04:24:24,897 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:24,897 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:24,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:24,953 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:24,953 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:24:24,953 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,954 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,954 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,954 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,954 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,954 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,954 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,954 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,955 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,955 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,955 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,956 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,956 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,956 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,956 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,956 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,957 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,957 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,958 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,958 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,958 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,958 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,958 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,958 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,959 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,959 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,959 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,960 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,960 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,960 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,960 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,960 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,960 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,960 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,961 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,961 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,961 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,962 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,962 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,962 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,962 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,962 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,962 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,963 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,963 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,963 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,964 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,964 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,964 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,964 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,964 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,965 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,965 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,965 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,965 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,965 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,965 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,965 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,966 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,966 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,966 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:24,967 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:24,967 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:24,967 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:24,967 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:24,967 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:24,967 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:24,968 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:24,968 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:24,969 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:24:24,970 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 04:24:24,970 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:24:24,970 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:24:24,970 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 04:24:24,971 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:24:24,971 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2018-11-10 04:24:24,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 04:24:24,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:25,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:25,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:25,073 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2018-11-10 04:24:25,073 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 263 states and 349 transitions. cyclomatic complexity: 92 Second operand 7 states. [2018-11-10 04:24:25,175 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 263 states and 349 transitions. cyclomatic complexity: 92. Second operand 7 states. Result 423 states and 540 transitions. Complement of second has 26 states. [2018-11-10 04:24:25,176 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 [2018-11-10 04:24:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2018-11-10 04:24:25,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 46 letters. Loop has 8 letters. [2018-11-10 04:24:25,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:25,179 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 04:24:25,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:25,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:25,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:25,272 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2018-11-10 04:24:25,272 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 263 states and 349 transitions. cyclomatic complexity: 92 Second operand 7 states. [2018-11-10 04:24:25,382 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 263 states and 349 transitions. cyclomatic complexity: 92. Second operand 7 states. Result 423 states and 540 transitions. Complement of second has 26 states. [2018-11-10 04:24:25,383 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 [2018-11-10 04:24:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2018-11-10 04:24:25,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 46 letters. Loop has 8 letters. [2018-11-10 04:24:25,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:25,384 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 04:24:25,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:25,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:25,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:25,488 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 5 loop predicates [2018-11-10 04:24:25,489 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 263 states and 349 transitions. cyclomatic complexity: 92 Second operand 7 states. [2018-11-10 04:24:25,608 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 263 states and 349 transitions. cyclomatic complexity: 92. Second operand 7 states. Result 495 states and 641 transitions. Complement of second has 25 states. [2018-11-10 04:24:25,608 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 [2018-11-10 04:24:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2018-11-10 04:24:25,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 46 letters. Loop has 8 letters. [2018-11-10 04:24:25,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:25,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 54 letters. Loop has 8 letters. [2018-11-10 04:24:25,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:25,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 46 letters. Loop has 16 letters. [2018-11-10 04:24:25,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:25,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 495 states and 641 transitions. [2018-11-10 04:24:25,614 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 55 [2018-11-10 04:24:25,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 495 states to 380 states and 503 transitions. [2018-11-10 04:24:25,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2018-11-10 04:24:25,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2018-11-10 04:24:25,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 380 states and 503 transitions. [2018-11-10 04:24:25,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:25,617 INFO L705 BuchiCegarLoop]: Abstraction has 380 states and 503 transitions. [2018-11-10 04:24:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states and 503 transitions. [2018-11-10 04:24:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 353. [2018-11-10 04:24:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-11-10 04:24:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 455 transitions. [2018-11-10 04:24:25,624 INFO L728 BuchiCegarLoop]: Abstraction has 353 states and 455 transitions. [2018-11-10 04:24:25,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 04:24:25,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:24:25,625 INFO L87 Difference]: Start difference. First operand 353 states and 455 transitions. Second operand 14 states. [2018-11-10 04:24:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:24:25,798 INFO L93 Difference]: Finished difference Result 243 states and 301 transitions. [2018-11-10 04:24:25,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 04:24:25,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 243 states and 301 transitions. [2018-11-10 04:24:25,801 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-10 04:24:25,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 243 states to 208 states and 253 transitions. [2018-11-10 04:24:25,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2018-11-10 04:24:25,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2018-11-10 04:24:25,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 253 transitions. [2018-11-10 04:24:25,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:24:25,803 INFO L705 BuchiCegarLoop]: Abstraction has 208 states and 253 transitions. [2018-11-10 04:24:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 253 transitions. [2018-11-10 04:24:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 192. [2018-11-10 04:24:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-10 04:24:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2018-11-10 04:24:25,807 INFO L728 BuchiCegarLoop]: Abstraction has 192 states and 230 transitions. [2018-11-10 04:24:25,807 INFO L608 BuchiCegarLoop]: Abstraction has 192 states and 230 transitions. [2018-11-10 04:24:25,807 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-10 04:24:25,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 230 transitions. [2018-11-10 04:24:25,808 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-10 04:24:25,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:24:25,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:24:25,809 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:25,809 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:24:25,809 INFO L793 eck$LassoCheckResult]: Stem: 12868#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 12867#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 6; 12842#L37 call main_#t~ret4 := fibo1(main_~x~0);< 12843#fibo1ENTRY ~n := #in~n; 12909#L8 assume !(~n < 1); 12910#L10 assume !(~n == 1); 12856#L13 call #t~ret0 := fibo2(~n - 1);< 12857#fibo2ENTRY ~n := #in~n; 12913#L18 assume !(~n < 1); 12912#L20 assume !(~n == 1); 12847#L23 call #t~ret2 := fibo1(~n - 1);< 12870#fibo1ENTRY ~n := #in~n; 12871#L8 assume !(~n < 1); 12846#L10 assume !(~n == 1); 12848#L13 call #t~ret0 := fibo2(~n - 1);< 12902#fibo2ENTRY ~n := #in~n; 12899#L18 assume !(~n < 1); 12900#L20 assume !(~n == 1); 12854#L23 call #t~ret2 := fibo1(~n - 1);< 12887#fibo1ENTRY ~n := #in~n; 12889#L8 assume !(~n < 1); 12907#L10 assume !(~n == 1); 12852#L13 call #t~ret0 := fibo2(~n - 1);< 12855#fibo2ENTRY ~n := #in~n; 12993#L18 assume !(~n < 1); 12991#L20 assume ~n == 1;#res := 1; 12990#fibo2FINAL assume true; 12989#fibo2EXIT >#50#return; 12858#L13-1 call #t~ret1 := fibo2(~n - 2);< 12859#fibo2ENTRY ~n := #in~n; 13003#L18 assume ~n < 1;#res := 0; 13001#fibo2FINAL assume true; 13000#fibo2EXIT >#52#return; 12998#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 12997#fibo1FINAL assume true; 12996#fibo1EXIT >#46#return; 12931#L23-1 call #t~ret3 := fibo1(~n - 2);< 12934#fibo1ENTRY ~n := #in~n; 13007#L8 assume !(~n < 1); 13006#L10 assume ~n == 1;#res := 1; 12994#fibo1FINAL assume true; 12930#fibo1EXIT >#48#return; 12929#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 12927#fibo2FINAL assume true; 12926#fibo2EXIT >#50#return; 12831#L13-1 call #t~ret1 := fibo2(~n - 2);< 12925#fibo2ENTRY ~n := #in~n; 13004#L18 assume !(~n < 1); 13002#L20 assume !(~n == 1); 12830#L23 call #t~ret2 := fibo1(~n - 1);< 12833#fibo1ENTRY ~n := #in~n; 12869#L8 assume !(~n < 1); 12844#L10 assume ~n == 1;#res := 1; 12845#fibo1FINAL assume true; 12860#fibo1EXIT >#46#return; 12838#L23-1 call #t~ret3 := fibo1(~n - 2);< 12839#fibo1ENTRY ~n := #in~n; 13020#L8 assume ~n < 1;#res := 0; 13017#fibo1FINAL assume true; 12851#fibo1EXIT >#48#return; 12849#L23-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 12850#fibo2FINAL assume true; 12924#fibo2EXIT >#52#return; 12923#L13-2 #res := #t~ret0 + #t~ret1;havoc #t~ret1;havoc #t~ret0; 12922#fibo1FINAL assume true; 12921#fibo1EXIT >#46#return; 12865#L23-1 call #t~ret3 := fibo1(~n - 2);< 12890#fibo1ENTRY [2018-11-10 04:24:25,809 INFO L795 eck$LassoCheckResult]: Loop: 12890#fibo1ENTRY ~n := #in~n; 12891#L8 assume !(~n < 1); 12879#L10 assume !(~n == 1); 12881#L13 call #t~ret0 := fibo2(~n - 1);< 12903#fibo2ENTRY ~n := #in~n; 12904#L18 assume !(~n < 1); 12959#L20 assume !(~n == 1); 12864#L23 call #t~ret2 := fibo1(~n - 1);< 12890#fibo1ENTRY [2018-11-10 04:24:25,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash 944778444, now seen corresponding path program 1 times [2018-11-10 04:24:25,810 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:25,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:25,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:25,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:25,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:25,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 4 times [2018-11-10 04:24:25,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:25,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:25,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:25,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:24:25,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:25,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1215722803, now seen corresponding path program 2 times [2018-11-10 04:24:25,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:24:25,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:24:25,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:25,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:24:25,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:24:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:24:25,903 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:25,903 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:25,903 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:25,903 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:25,903 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:24:25,903 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:25,903 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:25,903 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:25,904 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration10_Loop [2018-11-10 04:24:25,904 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:25,904 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:25,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:25,953 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:25,953 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:25,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:25,967 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:25,974 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:25,974 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret1=0} Honda state: {fibo1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:25,993 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:25,993 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:25,998 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:25,998 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:26,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:26,017 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:26,022 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:26,022 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:26,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:26,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:26,046 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:26,046 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:26,065 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:26,065 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:26,070 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:24:26,070 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-10 04:24:26,091 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:24:26,091 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6529539d-4b63-41a7-81dd-12ca33024cd6/bin-2019/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:26,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:24:26,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:24:26,173 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:24:26,174 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:24:26,174 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:24:26,174 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:24:26,174 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:24:26,174 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:24:26,174 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:24:26,175 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:24:26,175 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:24:26,175 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6_true-unreach-call_true-termination.c_Iteration10_Loop [2018-11-10 04:24:26,175 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:24:26,175 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:24:26,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:24:26,231 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:24:26,231 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:24:26,231 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:26,234 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:26,234 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:26,234 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:26,234 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:26,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:26,235 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:26,235 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:26,235 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:26,236 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:26,236 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:26,236 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:26,236 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:26,236 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:26,236 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:26,236 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:26,237 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:26,237 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:26,237 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:26,237 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:26,238 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:26,238 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:26,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:26,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:26,238 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:26,238 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:26,239 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:26,239 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:26,239 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:26,239 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:26,239 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:26,240 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:26,240 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:26,240 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:26,240 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:26,240 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:26,241 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:26,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:26,241 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:26,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:26,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:26,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:26,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:26,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:26,244 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:24:26,244 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 04:24:26,245 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:24:26,245 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:24:26,245 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:24:26,245 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:24:26,245 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:24:26,245 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:24:26,246 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:24:26,247 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:24:26,248 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 04:24:26,248 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:24:26,248 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:24:26,248 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 04:24:26,248 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:24:26,248 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2018-11-10 04:24:26,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 04:24:26,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:26,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:26,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:26,387 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2018-11-10 04:24:26,387 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 230 transitions. cyclomatic complexity: 42 Second operand 7 states. [2018-11-10 04:24:26,435 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 230 transitions. cyclomatic complexity: 42. Second operand 7 states. Result 200 states and 239 transitions. Complement of second has 7 states. [2018-11-10 04:24:26,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:24:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2018-11-10 04:24:26,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 67 letters. Loop has 8 letters. [2018-11-10 04:24:26,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:26,438 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 04:24:26,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:26,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:26,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:26,528 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2018-11-10 04:24:26,528 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 230 transitions. cyclomatic complexity: 42 Second operand 7 states. [2018-11-10 04:24:26,568 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 230 transitions. cyclomatic complexity: 42. Second operand 7 states. Result 200 states and 239 transitions. Complement of second has 7 states. [2018-11-10 04:24:26,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:24:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2018-11-10 04:24:26,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 67 letters. Loop has 8 letters. [2018-11-10 04:24:26,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:26,569 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 04:24:26,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:24:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:26,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:24:26,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:24:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:24:26,665 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 5 loop predicates [2018-11-10 04:24:26,665 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 230 transitions. cyclomatic complexity: 42 Second operand 7 states. [2018-11-10 04:24:26,782 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 230 transitions. cyclomatic complexity: 42. Second operand 7 states. Result 266 states and 322 transitions. Complement of second has 23 states. [2018-11-10 04:24:26,782 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 [2018-11-10 04:24:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-10 04:24:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2018-11-10 04:24:26,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 67 letters. Loop has 8 letters. [2018-11-10 04:24:26,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:26,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 75 letters. Loop has 8 letters. [2018-11-10 04:24:26,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:26,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 67 letters. Loop has 16 letters. [2018-11-10 04:24:26,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:24:26,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 266 states and 322 transitions. [2018-11-10 04:24:26,786 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 04:24:26,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 266 states to 0 states and 0 transitions. [2018-11-10 04:24:26,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 04:24:26,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 04:24:26,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 04:24:26,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 04:24:26,787 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:24:26,787 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:24:26,787 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:24:26,787 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-10 04:24:26,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:24:26,787 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 04:24:26,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 04:24:26,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 04:24:26 BoogieIcfgContainer [2018-11-10 04:24:26,793 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 04:24:26,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:24:26,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:24:26,794 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:24:26,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:24:16" (3/4) ... [2018-11-10 04:24:26,798 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 04:24:26,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:24:26,799 INFO L168 Benchmark]: Toolchain (without parser) took 10774.03 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 373.8 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -54.7 MB). Peak memory consumption was 319.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:24:26,800 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:24:26,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:24:26,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:24:26,800 INFO L168 Benchmark]: Boogie Preprocessor took 11.90 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:24:26,801 INFO L168 Benchmark]: RCFGBuilder took 215.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:24:26,801 INFO L168 Benchmark]: BuchiAutomizer took 10357.85 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 213.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 131.1 MB). Peak memory consumption was 345.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:24:26,802 INFO L168 Benchmark]: Witness Printer took 4.05 ms. Allocated memory is still 1.4 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:24:26,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 20.93 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.90 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 215.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 10357.85 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 213.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 131.1 MB). Peak memory consumption was 345.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.05 ms. Allocated memory is still 1.4 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (8 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.3s and 11 iterations. TraceHistogramMax:8. Analysis of lassos took 6.1s. Construction of modules took 1.2s. Büchi inclusion checks took 2.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 299 StatesRemovedByMinimization, 13 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 728 states and ocurred in iteration 7. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/16 HoareTripleCheckerStatistics: 398 SDtfs, 870 SDslu, 1056 SDs, 0 SdLazy, 2173 SolverSat, 436 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI4 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq184 hnf93 smp76 dnf100 smp100 tf111 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 34 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...