./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 61245002f662171c4f63dbacefaa0e216ea9fe3a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:41:53,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:41:53,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:41:53,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:41:53,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:41:53,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:41:53,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:41:53,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:41:53,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:41:53,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:41:53,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:41:53,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:41:53,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:41:53,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:41:53,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:41:53,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:41:53,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:41:53,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:41:53,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:41:53,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:41:53,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:41:53,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:41:53,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:41:53,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:41:53,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:41:53,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:41:53,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:41:53,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:41:53,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:41:53,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:41:53,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:41:53,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:41:53,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:41:53,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:41:53,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:41:53,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:41:53,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:41:53,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:41:53,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:41:53,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:41:53,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:41:53,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:41:53,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:41:53,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:41:53,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:41:53,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:41:53,804 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:41:53,805 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:41:53,805 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:41:53,805 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:41:53,806 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:41:53,806 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:41:53,806 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:41:53,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:41:53,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:41:53,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:41:53,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:41:53,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:41:53,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:41:53,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:41:53,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:41:53,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:41:53,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:41:53,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:41:53,810 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:41:53,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:41:53,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:41:53,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:41:53,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:41:53,811 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:41:53,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:41:53,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:41:53,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:41:53,812 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:41:53,814 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:41:53,814 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61245002f662171c4f63dbacefaa0e216ea9fe3a [2020-11-30 00:41:54,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:41:54,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:41:54,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:41:54,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:41:54,182 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:41:54,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-11-30 00:41:54,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/data/a8d12a931/94caf0e4f02b4560a9d4a1c1a8910d28/FLAGfeac0557f [2020-11-30 00:41:54,849 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:41:54,850 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-11-30 00:41:54,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/data/a8d12a931/94caf0e4f02b4560a9d4a1c1a8910d28/FLAGfeac0557f [2020-11-30 00:41:55,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/data/a8d12a931/94caf0e4f02b4560a9d4a1c1a8910d28 [2020-11-30 00:41:55,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:41:55,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:41:55,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:41:55,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:41:55,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:41:55,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e33fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55, skipping insertion in model container [2020-11-30 00:41:55,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:41:55,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:41:55,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:41:55,546 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:41:55,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:41:55,600 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:41:55,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55 WrapperNode [2020-11-30 00:41:55,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:41:55,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:41:55,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:41:55,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:41:55,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:41:55,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:41:55,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:41:55,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:41:55,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... [2020-11-30 00:41:55,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:41:55,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:41:55,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:41:55,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:41:55,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:41:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-30 00:41:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-30 00:41:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:41:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-30 00:41:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-30 00:41:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:41:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:41:56,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:41:56,041 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:41:56,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:56 BoogieIcfgContainer [2020-11-30 00:41:56,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:41:56,044 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:41:56,044 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:41:56,049 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:41:56,050 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:41:56,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:41:55" (1/3) ... [2020-11-30 00:41:56,052 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59b6e523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:41:56, skipping insertion in model container [2020-11-30 00:41:56,052 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:41:56,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:55" (2/3) ... [2020-11-30 00:41:56,053 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59b6e523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:41:56, skipping insertion in model container [2020-11-30 00:41:56,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:41:56,054 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:56" (3/3) ... [2020-11-30 00:41:56,056 INFO L373 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-11-30 00:41:56,131 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:41:56,133 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:41:56,133 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:41:56,134 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:41:56,134 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:41:56,134 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:41:56,134 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:41:56,134 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:41:56,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-11-30 00:41:56,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 00:41:56,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:41:56,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:41:56,245 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:41:56,246 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:56,246 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:41:56,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-11-30 00:41:56,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 00:41:56,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:41:56,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:41:56,251 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:41:56,252 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:56,265 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 22#L39true call main_#t~ret11 := fibo1(main_~x~0);< 27#fibo1ENTRYtrue [2020-11-30 00:41:56,268 INFO L796 eck$LassoCheckResult]: Loop: 27#fibo1ENTRYtrue ~n := #in~n; 4#L10true assume !(~n < 1); 10#L12true assume !(1 == ~n); 13#L15true call #t~ret7 := fibo2(~n - 1);< 15#fibo2ENTRYtrue ~n := #in~n; 28#L20true assume !(~n < 1); 20#L22true assume !(1 == ~n); 9#L25true call #t~ret9 := fibo1(~n - 1);< 27#fibo1ENTRYtrue [2020-11-30 00:41:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:56,288 INFO L82 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2020-11-30 00:41:56,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:56,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931966645] [2020-11-30 00:41:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:56,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:56,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:56,565 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:41:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:56,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2020-11-30 00:41:56,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:56,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63969799] [2020-11-30 00:41:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:56,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:56,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:56,612 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:41:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:56,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2020-11-30 00:41:56,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:56,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093383559] [2020-11-30 00:41:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:56,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:56,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:56,713 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:41:57,108 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:41:57,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:41:57,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:41:57,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:41:57,109 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:41:57,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:57,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:41:57,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:41:57,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2020-11-30 00:41:57,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:41:57,111 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:41:57,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,409 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:41:57,411 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:57,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,421 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:57,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,434 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:57,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,484 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:57,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,489 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:41:57,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,542 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:57,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,600 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:57,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,604 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:41:57,639 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,640 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:41:57,672 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,673 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:41:57,718 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,719 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:41:57,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:41:57,767 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:41:57,819 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:57,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:41:57,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:41:57,944 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:41:57,945 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:41:57,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:41:57,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:41:57,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:41:57,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:41:57,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:57,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:41:57,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:41:57,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2020-11-30 00:41:57,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:41:57,947 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:41:57,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:57,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:41:58,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:41:58,163 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:58,169 INFO L120 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 [2020-11-30 00:41:58,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,181 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,223 INFO L120 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 [2020-11-30 00:41:58,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:58,262 INFO L120 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 [2020-11-30 00:41:58,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,266 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:58,300 INFO L120 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 [2020-11-30 00:41:58,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,305 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,315 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:58,363 INFO L120 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 [2020-11-30 00:41:58,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:41:58,423 INFO L120 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 [2020-11-30 00:41:58,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,430 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,462 INFO L120 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 [2020-11-30 00:41:58,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,464 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,495 INFO L120 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 [2020-11-30 00:41:58,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,500 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:58,533 INFO L120 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 Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:41:58,535 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:41:58,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:41:58,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:41:58,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:41:58,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:41:58,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:41:58,558 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:41:58,563 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:41:58,563 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:41:58,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:41:58,571 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:41:58,572 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:41:58,572 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:41:58,619 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:41:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:58,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:41:58,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:58,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:41:58,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:58,905 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 [2020-11-30 00:41:58,907 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 6 states. [2020-11-30 00:41:59,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states.. Second operand 6 states. Result 85 states and 117 transitions. Complement of second has 24 states. [2020-11-30 00:41:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-30 00:41:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 00:41:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-11-30 00:41:59,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2020-11-30 00:41:59,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:41:59,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-30 00:41:59,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:41:59,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2020-11-30 00:41:59,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:41:59,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2020-11-30 00:41:59,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 00:41:59,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2020-11-30 00:41:59,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-11-30 00:41:59,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-11-30 00:41:59,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2020-11-30 00:41:59,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:41:59,289 INFO L691 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-11-30 00:41:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2020-11-30 00:41:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-11-30 00:41:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 00:41:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2020-11-30 00:41:59,346 INFO L714 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-11-30 00:41:59,346 INFO L594 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-11-30 00:41:59,346 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:41:59,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2020-11-30 00:41:59,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 00:41:59,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:41:59,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:41:59,361 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:59,361 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:59,361 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 230#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 216#L39 call main_#t~ret11 := fibo1(main_~x~0);< 222#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 217#L12 assume !(1 == ~n); 201#L15 call #t~ret7 := fibo2(~n - 1);< 233#fibo2ENTRY ~n := #in~n; 237#L20 assume !(~n < 1); 251#L22 assume !(1 == ~n); 212#L25 call #t~ret9 := fibo1(~n - 1);< 227#fibo1ENTRY ~n := #in~n; 211#L10 assume ~n < 1;#res := 0; 213#fibo1FINAL assume true; 220#fibo1EXIT >#48#return; 221#L25-1 [2020-11-30 00:41:59,362 INFO L796 eck$LassoCheckResult]: Loop: 221#L25-1 call #t~ret10 := fibo1(~n - 2);< 226#fibo1ENTRY ~n := #in~n; 246#L10 assume !(~n < 1); 247#L12 assume !(1 == ~n); 200#L15 call #t~ret7 := fibo2(~n - 1);< 239#fibo2ENTRY ~n := #in~n; 244#L20 assume !(~n < 1); 243#L22 assume !(1 == ~n); 224#L25 call #t~ret9 := fibo1(~n - 1);< 226#fibo1ENTRY ~n := #in~n; 246#L10 assume ~n < 1;#res := 0; 225#fibo1FINAL assume true; 229#fibo1EXIT >#48#return; 221#L25-1 [2020-11-30 00:41:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:59,363 INFO L82 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2020-11-30 00:41:59,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:59,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205551212] [2020-11-30 00:41:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 00:41:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:41:59,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205551212] [2020-11-30 00:41:59,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:59,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:41:59,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355770478] [2020-11-30 00:41:59,569 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:41:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:59,570 INFO L82 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2020-11-30 00:41:59,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:59,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940813340] [2020-11-30 00:41:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:59,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:41:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:41:59,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940813340] [2020-11-30 00:41:59,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:59,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:41:59,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136259466] [2020-11-30 00:41:59,675 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:41:59,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:59,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:41:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:41:59,680 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand 6 states. [2020-11-30 00:41:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:59,829 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2020-11-30 00:41:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:41:59,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2020-11-30 00:41:59,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 00:41:59,838 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2020-11-30 00:41:59,838 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2020-11-30 00:41:59,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-11-30 00:41:59,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2020-11-30 00:41:59,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:41:59,845 INFO L691 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-11-30 00:41:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2020-11-30 00:41:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-11-30 00:41:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 00:41:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-11-30 00:41:59,867 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-11-30 00:41:59,867 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-11-30 00:41:59,867 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:41:59,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2020-11-30 00:41:59,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 00:41:59,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:41:59,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:41:59,874 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:59,875 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:59,875 INFO L794 eck$LassoCheckResult]: Stem: 375#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 374#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 355#L39 call main_#t~ret11 := fibo1(main_~x~0);< 364#fibo1ENTRY ~n := #in~n; 354#L10 assume !(~n < 1); 356#L12 assume !(1 == ~n); 346#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 399#L20 assume !(~n < 1); 400#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := fibo1(~n - 1);< 371#fibo1ENTRY ~n := #in~n; 351#L10 assume !(~n < 1); 353#L12 assume 1 == ~n;#res := 1; 372#fibo1FINAL assume true; 365#fibo1EXIT >#48#return; 366#L25-1 [2020-11-30 00:41:59,875 INFO L796 eck$LassoCheckResult]: Loop: 366#L25-1 call #t~ret10 := fibo1(~n - 2);< 370#fibo1ENTRY ~n := #in~n; 389#L10 assume !(~n < 1); 390#L12 assume !(1 == ~n); 344#L15 call #t~ret7 := fibo2(~n - 1);< 388#fibo2ENTRY ~n := #in~n; 395#L20 assume !(~n < 1); 393#L22 assume !(1 == ~n); 368#L25 call #t~ret9 := fibo1(~n - 1);< 370#fibo1ENTRY ~n := #in~n; 389#L10 assume !(~n < 1); 390#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 373#fibo1EXIT >#48#return; 366#L25-1 [2020-11-30 00:41:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2020-11-30 00:41:59,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:59,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700355623] [2020-11-30 00:41:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 00:41:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:00,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700355623] [2020-11-30 00:42:00,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210608952] [2020-11-30 00:42:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:00,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:42:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:00,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:00,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-30 00:42:00,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270389145] [2020-11-30 00:42:00,175 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:42:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2020-11-30 00:42:00,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:00,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408631834] [2020-11-30 00:42:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:00,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:00,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:00,220 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:00,522 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:00,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:00,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:00,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:00,522 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:42:00,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:00,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:00,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:00,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2020-11-30 00:42:00,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:00,523 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:00,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:00,708 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:00,708 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:00,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:00,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:00,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:00,719 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:00,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:00,770 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:00,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:00,775 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:00,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:00,812 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:00,816 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:00,816 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:00,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:00,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:00,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:00,858 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:00,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:00,888 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:00,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:42:00,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:01,657 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:42:01,659 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:01,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:01,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:01,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:01,660 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:42:01,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:01,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:01,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:01,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2020-11-30 00:42:01,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:01,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:01,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:01,822 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:01,823 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:01,829 INFO L120 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 [2020-11-30 00:42:01,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:01,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:01,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:01,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:01,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:01,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:01,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:01,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:01,872 INFO L120 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 [2020-11-30 00:42:01,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:01,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:01,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:01,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:01,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:01,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:01,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:01,880 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:01,932 INFO L120 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 [2020-11-30 00:42:01,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:01,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:01,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:01,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:01,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:01,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:01,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:01,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:01,995 INFO L120 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 [2020-11-30 00:42:01,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:01,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:01,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:01,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:01,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:02,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:02,001 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:02,004 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:42:02,007 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:42:02,008 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:02,010 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:42:02,010 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:42:02,011 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:42:02,011 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2020-11-30 00:42:02,037 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:42:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:02,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:42:02,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:42:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:02,430 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 [2020-11-30 00:42:02,430 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand 10 states. [2020-11-30 00:42:03,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand 10 states. Result 191 states and 263 transitions. Complement of second has 40 states. [2020-11-30 00:42:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:42:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2020-11-30 00:42:03,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2020-11-30 00:42:03,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:03,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2020-11-30 00:42:03,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:03,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2020-11-30 00:42:03,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:03,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2020-11-30 00:42:03,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 00:42:03,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2020-11-30 00:42:03,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2020-11-30 00:42:03,314 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2020-11-30 00:42:03,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2020-11-30 00:42:03,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:03,316 INFO L691 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2020-11-30 00:42:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2020-11-30 00:42:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-11-30 00:42:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-30 00:42:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2020-11-30 00:42:03,349 INFO L714 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2020-11-30 00:42:03,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:42:03,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:42:03,351 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand 10 states. [2020-11-30 00:42:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:03,653 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2020-11-30 00:42:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:42:03,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2020-11-30 00:42:03,670 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 00:42:03,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2020-11-30 00:42:03,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2020-11-30 00:42:03,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2020-11-30 00:42:03,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2020-11-30 00:42:03,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:03,678 INFO L691 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2020-11-30 00:42:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2020-11-30 00:42:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2020-11-30 00:42:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-30 00:42:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-11-30 00:42:03,699 INFO L714 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-11-30 00:42:03,700 INFO L594 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-11-30 00:42:03,700 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:42:03,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2020-11-30 00:42:03,703 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 00:42:03,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:42:03,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:42:03,710 INFO L852 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] [2020-11-30 00:42:03,710 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 00:42:03,711 INFO L794 eck$LassoCheckResult]: Stem: 1219#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1214#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 1192#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1193#fibo1ENTRY ~n := #in~n; 1257#L10 assume !(~n < 1); 1206#L12 assume !(1 == ~n); 1159#L15 call #t~ret7 := fibo2(~n - 1);< 1216#fibo2ENTRY ~n := #in~n; 1221#L20 assume !(~n < 1); 1175#L22 assume !(1 == ~n); 1176#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1184#L12 assume !(1 == ~n); 1203#L15 call #t~ret7 := fibo2(~n - 1);< 1259#fibo2ENTRY ~n := #in~n; 1261#L20 assume !(~n < 1); 1262#L22 assume !(1 == ~n); 1183#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1184#L12 assume !(1 == ~n); 1203#L15 call #t~ret7 := fibo2(~n - 1);< 1259#fibo2ENTRY ~n := #in~n; 1261#L20 assume ~n < 1;#res := 0; 1260#fibo2FINAL assume true; 1258#fibo2EXIT >#52#return; 1204#L15-1 call #t~ret8 := fibo2(~n - 2);< 1223#fibo2ENTRY ~n := #in~n; 1317#L20 assume !(~n < 1); 1316#L22 assume !(1 == ~n); 1183#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1256#L10 assume !(~n < 1); 1263#L12 assume 1 == ~n;#res := 1; 1264#fibo1FINAL assume true; 1251#fibo1EXIT >#48#return; 1208#L25-1 call #t~ret10 := fibo1(~n - 2);< 1213#fibo1ENTRY ~n := #in~n; 1249#L10 assume !(~n < 1); 1247#L12 assume !(1 == ~n); 1212#L15 call #t~ret7 := fibo2(~n - 1);< 1246#fibo2ENTRY ~n := #in~n; 1243#L20 assume ~n < 1;#res := 0; 1244#fibo2FINAL assume true; 1248#fibo2EXIT >#52#return; 1211#L15-1 call #t~ret8 := fibo2(~n - 2);< 1246#fibo2ENTRY ~n := #in~n; 1243#L20 assume !(~n < 1); 1239#L22 assume 1 == ~n;#res := 1; 1240#fibo2FINAL assume true; 1308#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#48#return; 1186#L25-1 call #t~ret10 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#52#return; 1172#L15-1 [2020-11-30 00:42:03,711 INFO L796 eck$LassoCheckResult]: Loop: 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume !(~n < 1); 1169#L22 assume !(1 == ~n); 1174#L25 call #t~ret9 := fibo1(~n - 1);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume !(~n < 1); 1169#L22 assume !(1 == ~n); 1174#L25 call #t~ret9 := fibo1(~n - 1);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#48#return; 1186#L25-1 call #t~ret10 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#52#return; 1172#L15-1 [2020-11-30 00:42:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2020-11-30 00:42:03,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:03,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000625727] [2020-11-30 00:42:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:03,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-30 00:42:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:42:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:42:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-30 00:42:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:42:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-30 00:42:04,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000625727] [2020-11-30 00:42:04,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131117130] [2020-11-30 00:42:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:42:04,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-11-30 00:42:04,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:04,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 19 [2020-11-30 00:42:04,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309512535] [2020-11-30 00:42:04,605 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:42:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:04,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1411437133, now seen corresponding path program 1 times [2020-11-30 00:42:04,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:04,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176697057] [2020-11-30 00:42:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:42:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:42:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-30 00:42:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 00:42:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-30 00:42:04,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176697057] [2020-11-30 00:42:04,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880828951] [2020-11-30 00:42:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:42:04,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 00:42:04,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:04,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2020-11-30 00:42:04,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241441003] [2020-11-30 00:42:04,994 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:42:04,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:04,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:42:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:42:04,999 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand 12 states. [2020-11-30 00:42:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:05,357 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2020-11-30 00:42:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:42:05,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2020-11-30 00:42:05,362 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 00:42:05,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2020-11-30 00:42:05,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2020-11-30 00:42:05,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2020-11-30 00:42:05,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2020-11-30 00:42:05,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:05,369 INFO L691 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2020-11-30 00:42:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2020-11-30 00:42:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2020-11-30 00:42:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-30 00:42:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2020-11-30 00:42:05,402 INFO L714 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-11-30 00:42:05,402 INFO L594 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-11-30 00:42:05,403 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:42:05,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2020-11-30 00:42:05,406 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 00:42:05,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:42:05,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:42:05,412 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:05,414 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:05,414 INFO L794 eck$LassoCheckResult]: Stem: 2331#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2321#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2303#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2304#fibo1ENTRY ~n := #in~n; 2366#L10 assume !(~n < 1); 2320#L12 assume !(1 == ~n); 2284#L15 call #t~ret7 := fibo2(~n - 1);< 2324#fibo2ENTRY ~n := #in~n; 2415#L20 assume !(~n < 1); 2283#L22 assume !(1 == ~n); 2285#L25 call #t~ret9 := fibo1(~n - 1);< 2313#fibo1ENTRY ~n := #in~n; 2352#L10 assume !(~n < 1); 2350#L12 assume !(1 == ~n); 2267#L15 call #t~ret7 := fibo2(~n - 1);< 2346#fibo2ENTRY ~n := #in~n; 2369#L20 assume !(~n < 1); 2368#L22 assume !(1 == ~n); 2338#L25 call #t~ret9 := fibo1(~n - 1);< 2313#fibo1ENTRY ~n := #in~n; 2355#L10 assume !(~n < 1); 2379#L12 assume 1 == ~n;#res := 1; 2380#fibo1FINAL assume true; 2446#fibo1EXIT >#48#return; 2293#L25-1 call #t~ret10 := fibo1(~n - 2);< 2316#fibo1ENTRY ~n := #in~n; 2292#L10 assume ~n < 1;#res := 0; 2294#fibo1FINAL assume true; 2449#fibo1EXIT >#50#return; 2266#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 2269#fibo2FINAL assume true; 2389#fibo2EXIT >#52#return; 2288#L15-1 [2020-11-30 00:42:05,414 INFO L796 eck$LassoCheckResult]: Loop: 2288#L15-1 call #t~ret8 := fibo2(~n - 2);< 2337#fibo2ENTRY ~n := #in~n; 2416#L20 assume !(~n < 1); 2417#L22 assume !(1 == ~n); 2396#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2410#L10 assume !(~n < 1); 2408#L12 assume !(1 == ~n); 2289#L15 call #t~ret7 := fibo2(~n - 1);< 2337#fibo2ENTRY ~n := #in~n; 2416#L20 assume !(~n < 1); 2417#L22 assume 1 == ~n;#res := 1; 2286#fibo2FINAL assume true; 2290#fibo2EXIT >#52#return; 2288#L15-1 [2020-11-30 00:42:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2020-11-30 00:42:05,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:05,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629632105] [2020-11-30 00:42:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:05,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:05,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:05,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:05,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:05,447 INFO L82 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2020-11-30 00:42:05,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:05,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692423981] [2020-11-30 00:42:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:05,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:05,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:05,456 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1977386679, now seen corresponding path program 1 times [2020-11-30 00:42:05,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:05,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788824383] [2020-11-30 00:42:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-30 00:42:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-30 00:42:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 00:42:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788824383] [2020-11-30 00:42:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45076690] [2020-11-30 00:42:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:05,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:42:05,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 00:42:05,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:05,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2020-11-30 00:42:05,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948155100] [2020-11-30 00:42:06,066 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:06,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:06,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:06,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:06,067 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:42:06,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:06,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:06,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:06,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration5_Loop [2020-11-30 00:42:06,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:06,067 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:06,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:06,238 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:06,238 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:06,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:06,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:06,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:06,248 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:06,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:06,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:06,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:06,280 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:06,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:06,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:06,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:06,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=1} Honda state: {fibo1_#t~ret7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:06,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:06,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:06,344 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:06,344 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:06,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:06,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:06,376 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:06,376 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/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 [2020-11-30 00:42:06,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:06,405 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:06,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:42:06,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:07,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:42:07,267 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:07,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:07,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:07,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:07,267 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:42:07,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:07,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:07,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration5_Loop [2020-11-30 00:42:07,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:07,268 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:07,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:07,383 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:07,383 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,400 INFO L120 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 [2020-11-30 00:42:07,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,459 INFO L120 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 [2020-11-30 00:42:07,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,514 INFO L120 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 [2020-11-30 00:42:07,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,571 INFO L120 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 [2020-11-30 00:42:07,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,628 INFO L120 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 [2020-11-30 00:42:07,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,632 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,634 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,683 INFO L120 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 [2020-11-30 00:42:07,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,689 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,736 INFO L120 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 [2020-11-30 00:42:07,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,740 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,790 INFO L120 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 [2020-11-30 00:42:07,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:07,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:07,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:07,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:07,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:07,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:07,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:42:07,804 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:42:07,805 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:07,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:42:07,809 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:42:07,809 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:42:07,809 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:07,855 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:42:07,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:08,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:42:08,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:08,090 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:08,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:08,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:42:08,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:08,308 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 [2020-11-30 00:42:08,308 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand 10 states. [2020-11-30 00:42:09,054 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 184 states and 238 transitions. cyclomatic complexity: 59. Second operand 10 states. Result 717 states and 936 transitions. Complement of second has 40 states. [2020-11-30 00:42:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:42:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 69 transitions. [2020-11-30 00:42:09,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 32 letters. Loop has 14 letters. [2020-11-30 00:42:09,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:09,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 46 letters. Loop has 14 letters. [2020-11-30 00:42:09,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:09,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 32 letters. Loop has 28 letters. [2020-11-30 00:42:09,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:09,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 717 states and 936 transitions. [2020-11-30 00:42:09,095 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 40 [2020-11-30 00:42:09,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 717 states to 646 states and 859 transitions. [2020-11-30 00:42:09,119 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2020-11-30 00:42:09,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2020-11-30 00:42:09,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 646 states and 859 transitions. [2020-11-30 00:42:09,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:09,124 INFO L691 BuchiCegarLoop]: Abstraction has 646 states and 859 transitions. [2020-11-30 00:42:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states and 859 transitions. [2020-11-30 00:42:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 625. [2020-11-30 00:42:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-11-30 00:42:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 829 transitions. [2020-11-30 00:42:09,210 INFO L714 BuchiCegarLoop]: Abstraction has 625 states and 829 transitions. [2020-11-30 00:42:09,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:09,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 00:42:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:42:09,212 INFO L87 Difference]: Start difference. First operand 625 states and 829 transitions. Second operand 14 states. [2020-11-30 00:42:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:09,555 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-11-30 00:42:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:42:09,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 234 states and 284 transitions. [2020-11-30 00:42:09,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-11-30 00:42:09,576 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 234 states to 219 states and 269 transitions. [2020-11-30 00:42:09,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2020-11-30 00:42:09,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2020-11-30 00:42:09,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 269 transitions. [2020-11-30 00:42:09,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:09,579 INFO L691 BuchiCegarLoop]: Abstraction has 219 states and 269 transitions. [2020-11-30 00:42:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 269 transitions. [2020-11-30 00:42:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 199. [2020-11-30 00:42:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-11-30 00:42:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-11-30 00:42:09,589 INFO L714 BuchiCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-11-30 00:42:09,590 INFO L594 BuchiCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-11-30 00:42:09,590 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:42:09,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 245 transitions. [2020-11-30 00:42:09,593 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-11-30 00:42:09,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:42:09,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:42:09,595 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:09,595 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:09,595 INFO L794 eck$LassoCheckResult]: Stem: 4497#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4496#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4466#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4467#fibo1ENTRY ~n := #in~n; 4550#L10 assume !(~n < 1); 4488#L12 assume !(1 == ~n); 4483#L15 call #t~ret7 := fibo2(~n - 1);< 4567#fibo2ENTRY ~n := #in~n; 4512#L20 assume !(~n < 1); 4513#L22 assume !(1 == ~n); 4454#L25 call #t~ret9 := fibo1(~n - 1);< 4484#fibo1ENTRY ~n := #in~n; 4499#L10 assume !(~n < 1); 4556#L12 assume !(1 == ~n); 4547#L15 call #t~ret7 := fibo2(~n - 1);< 4548#fibo2ENTRY ~n := #in~n; 4555#L20 assume !(~n < 1); 4554#L22 assume 1 == ~n;#res := 1; 4553#fibo2FINAL assume true; 4546#fibo2EXIT >#52#return; 4544#L15-1 call #t~ret8 := fibo2(~n - 2);< 4545#fibo2ENTRY ~n := #in~n; 4551#L20 assume ~n < 1;#res := 0; 4549#fibo2FINAL assume true; 4543#fibo2EXIT >#54#return; 4542#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4541#fibo1FINAL assume true; 4538#fibo1EXIT >#48#return; 4526#L25-1 call #t~ret10 := fibo1(~n - 2);< 4495#fibo1ENTRY ~n := #in~n; 4531#L10 assume !(~n < 1); 4529#L12 assume !(1 == ~n); 4494#L15 call #t~ret7 := fibo2(~n - 1);< 4522#fibo2ENTRY ~n := #in~n; 4520#L20 assume !(~n < 1); 4518#L22 assume !(1 == ~n); 4476#L25 call #t~ret9 := fibo1(~n - 1);< 4613#fibo1ENTRY ~n := #in~n; 4635#L10 assume !(~n < 1); 4558#L12 assume !(1 == ~n); 4442#L15 call #t~ret7 := fibo2(~n - 1);< 4500#fibo2ENTRY [2020-11-30 00:42:09,595 INFO L796 eck$LassoCheckResult]: Loop: 4500#fibo2ENTRY ~n := #in~n; 4598#L20 assume !(~n < 1); 4560#L22 assume !(1 == ~n); 4469#L25 call #t~ret9 := fibo1(~n - 1);< 4482#fibo1ENTRY ~n := #in~n; 4638#L10 assume !(~n < 1); 4633#L12 assume !(1 == ~n); 4443#L15 call #t~ret7 := fibo2(~n - 1);< 4500#fibo2ENTRY [2020-11-30 00:42:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1779459932, now seen corresponding path program 1 times [2020-11-30 00:42:09,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:09,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747716944] [2020-11-30 00:42:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 00:42:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:09,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:42:09,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747716944] [2020-11-30 00:42:09,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063701516] [2020-11-30 00:42:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:09,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:42:09,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:42:09,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:09,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-30 00:42:09,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965128773] [2020-11-30 00:42:09,945 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:42:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:09,945 INFO L82 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2020-11-30 00:42:09,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:09,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859598278] [2020-11-30 00:42:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:09,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:09,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:09,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:10,100 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:10,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:10,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:10,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:10,101 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:42:10,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:10,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:10,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2020-11-30 00:42:10,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:10,101 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:10,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,245 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:10,246 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,252 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,259 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,309 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,313 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,361 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,366 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,421 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,427 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,427 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,477 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,481 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,481 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,533 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,538 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:10,576 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,577 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,606 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,609 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:10,609 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:10,636 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:42:10,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:10,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:42:10,738 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:10,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:10,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:10,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:10,739 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:42:10,739 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,739 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:10,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:10,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2020-11-30 00:42:10,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:10,739 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:10,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:10,846 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:10,846 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,857 INFO L120 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 [2020-11-30 00:42:10,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:10,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:10,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:10,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:10,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:10,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:10,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:10,861 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,894 INFO L120 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 [2020-11-30 00:42:10,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:10,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:10,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:10,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:10,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:10,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:10,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,918 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:10,967 INFO L120 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 [2020-11-30 00:42:10,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:10,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:10,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:10,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:10,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:10,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:10,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:10,973 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,017 INFO L120 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 [2020-11-30 00:42:11,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:11,022 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,050 INFO L120 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 [2020-11-30 00:42:11,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:11,055 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,084 INFO L120 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 [2020-11-30 00:42:11,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:11,088 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,123 INFO L120 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 [2020-11-30 00:42:11,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:11,127 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,156 INFO L120 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 [2020-11-30 00:42:11,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:11,170 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:11,218 INFO L120 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 [2020-11-30 00:42:11,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,222 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,222 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,257 INFO L120 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 [2020-11-30 00:42:11,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:11,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:11,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:11,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:11,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:11,260 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:11,260 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:11,263 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:42:11,273 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 00:42:11,273 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:11,277 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:42:11,277 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:42:11,277 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:42:11,277 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:11,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:42:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:11,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:42:11,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:11,466 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:11,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:11,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:42:11,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:11,632 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 [2020-11-30 00:42:11,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-11-30 00:42:11,833 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 223 states and 270 transitions. Complement of second has 21 states. [2020-11-30 00:42:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:42:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-11-30 00:42:11,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 41 letters. Loop has 8 letters. [2020-11-30 00:42:11,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:11,836 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:42:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:11,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:42:11,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:11,956 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:11,960 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:12,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:42:12,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:12,084 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 [2020-11-30 00:42:12,084 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-11-30 00:42:12,272 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 223 states and 270 transitions. Complement of second has 21 states. [2020-11-30 00:42:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:42:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-11-30 00:42:12,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 41 letters. Loop has 8 letters. [2020-11-30 00:42:12,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:12,274 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:42:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:12,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:42:12,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:12,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:12,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:42:12,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:12,518 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 [2020-11-30 00:42:12,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-11-30 00:42:12,790 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 401 states and 472 transitions. Complement of second has 25 states. [2020-11-30 00:42:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:42:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2020-11-30 00:42:12,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 41 letters. Loop has 8 letters. [2020-11-30 00:42:12,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:12,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 49 letters. Loop has 8 letters. [2020-11-30 00:42:12,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:12,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 41 letters. Loop has 16 letters. [2020-11-30 00:42:12,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:12,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 401 states and 472 transitions. [2020-11-30 00:42:12,806 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2020-11-30 00:42:12,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 401 states to 297 states and 362 transitions. [2020-11-30 00:42:12,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 171 [2020-11-30 00:42:12,813 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2020-11-30 00:42:12,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 362 transitions. [2020-11-30 00:42:12,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:12,813 INFO L691 BuchiCegarLoop]: Abstraction has 297 states and 362 transitions. [2020-11-30 00:42:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 362 transitions. [2020-11-30 00:42:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 272. [2020-11-30 00:42:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-11-30 00:42:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-11-30 00:42:12,827 INFO L714 BuchiCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-11-30 00:42:12,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:12,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:42:12,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:42:12,829 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 13 states. [2020-11-30 00:42:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:13,206 INFO L93 Difference]: Finished difference Result 304 states and 372 transitions. [2020-11-30 00:42:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:42:13,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 304 states and 372 transitions. [2020-11-30 00:42:13,220 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-11-30 00:42:13,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 304 states to 302 states and 370 transitions. [2020-11-30 00:42:13,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 192 [2020-11-30 00:42:13,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2020-11-30 00:42:13,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 302 states and 370 transitions. [2020-11-30 00:42:13,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:13,236 INFO L691 BuchiCegarLoop]: Abstraction has 302 states and 370 transitions. [2020-11-30 00:42:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states and 370 transitions. [2020-11-30 00:42:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 277. [2020-11-30 00:42:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-11-30 00:42:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 336 transitions. [2020-11-30 00:42:13,251 INFO L714 BuchiCegarLoop]: Abstraction has 277 states and 336 transitions. [2020-11-30 00:42:13,252 INFO L594 BuchiCegarLoop]: Abstraction has 277 states and 336 transitions. [2020-11-30 00:42:13,252 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 00:42:13,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 336 transitions. [2020-11-30 00:42:13,256 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-11-30 00:42:13,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:42:13,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:42:13,265 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:13,265 INFO L853 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] [2020-11-30 00:42:13,267 INFO L794 eck$LassoCheckResult]: Stem: 6854#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6844#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 6824#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6825#fibo1ENTRY ~n := #in~n; 6911#L10 assume !(~n < 1); 6910#L12 assume !(1 == ~n); 6906#L15 call #t~ret7 := fibo2(~n - 1);< 6909#fibo2ENTRY ~n := #in~n; 6908#L20 assume !(~n < 1); 6907#L22 assume !(1 == ~n); 6882#L25 call #t~ret9 := fibo1(~n - 1);< 6883#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6902#L12 assume !(1 == ~n); 6878#L15 call #t~ret7 := fibo2(~n - 1);< 6891#fibo2ENTRY ~n := #in~n; 6892#L20 assume !(~n < 1); 7049#L22 assume !(1 == ~n); 7043#L25 call #t~ret9 := fibo1(~n - 1);< 7044#fibo1ENTRY ~n := #in~n; 7050#L10 assume !(~n < 1); 7048#L12 assume 1 == ~n;#res := 1; 7046#fibo1FINAL assume true; 7042#fibo1EXIT >#48#return; 7028#L25-1 call #t~ret10 := fibo1(~n - 2);< 7029#fibo1ENTRY ~n := #in~n; 7033#L10 assume ~n < 1;#res := 0; 7032#fibo1FINAL assume true; 7027#fibo1EXIT >#50#return; 7024#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 7019#fibo2FINAL assume true; 7015#fibo2EXIT >#52#return; 6972#L15-1 call #t~ret8 := fibo2(~n - 2);< 6973#fibo2ENTRY ~n := #in~n; 6981#L20 assume ~n < 1;#res := 0; 6980#fibo2FINAL assume true; 6971#fibo2EXIT >#54#return; 6969#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6968#fibo1FINAL assume true; 6962#fibo1EXIT >#48#return; 6850#L25-1 call #t~ret10 := fibo1(~n - 2);< 6952#fibo1ENTRY [2020-11-30 00:42:13,268 INFO L796 eck$LassoCheckResult]: Loop: 6952#fibo1ENTRY ~n := #in~n; 6946#L10 assume !(~n < 1); 6948#L12 assume !(1 == ~n); 6848#L15 call #t~ret7 := fibo2(~n - 1);< 6852#fibo2ENTRY ~n := #in~n; 6974#L20 assume !(~n < 1); 6970#L22 assume !(1 == ~n); 6960#L25 call #t~ret9 := fibo1(~n - 1);< 6966#fibo1ENTRY ~n := #in~n; 6979#L10 assume !(~n < 1); 6978#L12 assume !(1 == ~n); 6965#L15 call #t~ret7 := fibo2(~n - 1);< 6975#fibo2ENTRY ~n := #in~n; 6976#L20 assume !(~n < 1); 7011#L22 assume !(1 == ~n); 7010#L25 call #t~ret9 := fibo1(~n - 1);< 7035#fibo1ENTRY ~n := #in~n; 7038#L10 assume !(~n < 1); 7037#L12 assume 1 == ~n;#res := 1; 7036#fibo1FINAL assume true; 7034#fibo1EXIT >#48#return; 7022#L25-1 call #t~ret10 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7031#L10 assume ~n < 1;#res := 0; 7030#fibo1FINAL assume true; 7021#fibo1EXIT >#50#return; 7018#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 7014#fibo2FINAL assume true; 6991#fibo2EXIT >#52#return; 6987#L15-1 call #t~ret8 := fibo2(~n - 2);< 6989#fibo2ENTRY ~n := #in~n; 7001#L20 assume ~n < 1;#res := 0; 7000#fibo2FINAL assume true; 6985#fibo2EXIT >#54#return; 6983#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6964#fibo1FINAL assume true; 6963#fibo1EXIT >#48#return; 6851#L25-1 call #t~ret10 := fibo1(~n - 2);< 6952#fibo1ENTRY [2020-11-30 00:42:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash -205691575, now seen corresponding path program 1 times [2020-11-30 00:42:13,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:13,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106438911] [2020-11-30 00:42:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 00:42:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 00:42:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 00:42:13,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106438911] [2020-11-30 00:42:13,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976099907] [2020-11-30 00:42:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:42:13,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 00:42:13,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:13,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-11-30 00:42:13,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721644210] [2020-11-30 00:42:13,720 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:42:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:13,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1309552832, now seen corresponding path program 1 times [2020-11-30 00:42:13,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:13,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767129078] [2020-11-30 00:42:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-30 00:42:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 00:42:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 00:42:13,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767129078] [2020-11-30 00:42:13,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334399790] [2020-11-30 00:42:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:42:13,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 00:42:14,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:14,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-11-30 00:42:14,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968181627] [2020-11-30 00:42:14,065 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:42:14,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:42:14,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:42:14,066 INFO L87 Difference]: Start difference. First operand 277 states and 336 transitions. cyclomatic complexity: 64 Second operand 11 states. [2020-11-30 00:42:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:14,314 INFO L93 Difference]: Finished difference Result 321 states and 393 transitions. [2020-11-30 00:42:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:42:14,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 393 transitions. [2020-11-30 00:42:14,321 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-11-30 00:42:14,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 319 states and 391 transitions. [2020-11-30 00:42:14,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2020-11-30 00:42:14,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2020-11-30 00:42:14,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 319 states and 391 transitions. [2020-11-30 00:42:14,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:14,329 INFO L691 BuchiCegarLoop]: Abstraction has 319 states and 391 transitions. [2020-11-30 00:42:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states and 391 transitions. [2020-11-30 00:42:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 287. [2020-11-30 00:42:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-30 00:42:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 351 transitions. [2020-11-30 00:42:14,343 INFO L714 BuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2020-11-30 00:42:14,343 INFO L594 BuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2020-11-30 00:42:14,343 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 00:42:14,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 287 states and 351 transitions. [2020-11-30 00:42:14,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-11-30 00:42:14,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:42:14,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:42:14,349 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:14,349 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:14,349 INFO L794 eck$LassoCheckResult]: Stem: 7838#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7833#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 7813#L39 call main_#t~ret11 := fibo1(main_~x~0);< 7814#fibo1ENTRY ~n := #in~n; 7880#L10 assume !(~n < 1); 7879#L12 assume !(1 == ~n); 7875#L15 call #t~ret7 := fibo2(~n - 1);< 7878#fibo2ENTRY ~n := #in~n; 7877#L20 assume !(~n < 1); 7876#L22 assume !(1 == ~n); 7865#L25 call #t~ret9 := fibo1(~n - 1);< 7867#fibo1ENTRY ~n := #in~n; 7873#L10 assume !(~n < 1); 7872#L12 assume !(1 == ~n); 7862#L15 call #t~ret7 := fibo2(~n - 1);< 7870#fibo2ENTRY ~n := #in~n; 7871#L20 assume !(~n < 1); 7993#L22 assume !(1 == ~n); 7991#L25 call #t~ret9 := fibo1(~n - 1);< 7992#fibo1ENTRY ~n := #in~n; 8004#L10 assume !(~n < 1); 7999#L12 assume 1 == ~n;#res := 1; 7994#fibo1FINAL assume true; 7990#fibo1EXIT >#48#return; 7982#L25-1 call #t~ret10 := fibo1(~n - 2);< 7983#fibo1ENTRY ~n := #in~n; 7989#L10 assume ~n < 1;#res := 0; 7988#fibo1FINAL assume true; 7981#fibo1EXIT >#50#return; 7979#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 7978#fibo2FINAL assume true; 7977#fibo2EXIT >#52#return; 7974#L15-1 call #t~ret8 := fibo2(~n - 2);< 7975#fibo2ENTRY ~n := #in~n; 8009#L20 assume !(~n < 1); 8008#L22 assume 1 == ~n;#res := 1; 8007#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7959#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 7956#fibo1FINAL assume true; 7954#fibo1EXIT >#48#return; 7935#L25-1 call #t~ret10 := fibo1(~n - 2);< 7942#fibo1ENTRY [2020-11-30 00:42:14,350 INFO L796 eck$LassoCheckResult]: Loop: 7942#fibo1ENTRY ~n := #in~n; 7943#L10 assume !(~n < 1); 7934#L12 assume !(1 == ~n); 7795#L15 call #t~ret7 := fibo2(~n - 1);< 7932#fibo2ENTRY ~n := #in~n; 7843#L20 assume !(~n < 1); 7794#L22 assume !(1 == ~n); 7797#L25 call #t~ret9 := fibo1(~n - 1);< 7958#fibo1ENTRY ~n := #in~n; 7976#L10 assume !(~n < 1); 7972#L12 assume !(1 == ~n); 7796#L15 call #t~ret7 := fibo2(~n - 1);< 7841#fibo2ENTRY ~n := #in~n; 7842#L20 assume !(~n < 1); 8002#L22 assume 1 == ~n;#res := 1; 7998#fibo2FINAL assume true; 7986#fibo2EXIT >#52#return; 7964#L15-1 call #t~ret8 := fibo2(~n - 2);< 7966#fibo2ENTRY ~n := #in~n; 7995#L20 assume ~n < 1;#res := 0; 7996#fibo2FINAL assume true; 8044#fibo2EXIT >#54#return; 7965#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 8043#fibo1FINAL assume true; 7952#fibo1EXIT >#48#return; 7936#L25-1 call #t~ret10 := fibo1(~n - 2);< 7942#fibo1ENTRY [2020-11-30 00:42:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:14,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1129557662, now seen corresponding path program 1 times [2020-11-30 00:42:14,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:14,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473266098] [2020-11-30 00:42:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:14,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:14,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:14,385 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:14,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:14,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1552659165, now seen corresponding path program 1 times [2020-11-30 00:42:14,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:14,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248097956] [2020-11-30 00:42:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:14,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:14,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:14,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:14,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1204019970, now seen corresponding path program 1 times [2020-11-30 00:42:14,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:14,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108063871] [2020-11-30 00:42:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 00:42:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 00:42:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-30 00:42:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 00:42:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 00:42:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-30 00:42:14,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108063871] [2020-11-30 00:42:14,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071766437] [2020-11-30 00:42:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:14,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:42:14,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 00:42:14,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:42:14,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2020-11-30 00:42:14,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091742706] [2020-11-30 00:42:15,040 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:15,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:15,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:15,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:15,041 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:42:15,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:15,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:15,041 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2020-11-30 00:42:15,041 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:15,041 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:15,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,123 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:15,123 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,131 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,131 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 79 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 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,162 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 80 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 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,209 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,209 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 81 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 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,246 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,246 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 82 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 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,281 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 83 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 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,311 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 84 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 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,343 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,344 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 85 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 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:42:15,375 INFO L440 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/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 86 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 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:42:15,404 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 87 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 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:42:15,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:42:15,441 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:42:15,466 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:42:15,466 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:42:15,466 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:42:15,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:42:15,467 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:42:15,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,467 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:42:15,467 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:42:15,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2020-11-30 00:42:15,467 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:42:15,467 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:42:15,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:42:15,559 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:42:15,559 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 88 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 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,564 INFO L120 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 [2020-11-30 00:42:15,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,568 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 89 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 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,595 INFO L120 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 [2020-11-30 00:42:15,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,597 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,599 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 90 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 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,627 INFO L120 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 [2020-11-30 00:42:15,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,631 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 91 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 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,660 INFO L120 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 [2020-11-30 00:42:15,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,663 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,664 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 92 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 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,692 INFO L120 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 [2020-11-30 00:42:15,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 93 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 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,724 INFO L120 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 [2020-11-30 00:42:15,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,751 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 94 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 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,800 INFO L120 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 [2020-11-30 00:42:15,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 95 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 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,831 INFO L120 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 [2020-11-30 00:42:15,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,835 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 96 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 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,863 INFO L120 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 [2020-11-30 00:42:15,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:42:15,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:42:15,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:42:15,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:42:15,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:42:15,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:42:15,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:42:15,868 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:42:15,872 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:42:15,872 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e26ad44d-f88c-40a7-9174-dbafa8c509d2/bin/uautomizer/z3 Starting monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:42:15,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:42:15,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:42:15,892 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:42:15,892 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:42:15,925 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:42:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:16,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:42:16,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:16,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:16,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:42:16,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:42:16,283 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-11-30 00:42:16,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-11-30 00:42:16,558 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 494 states and 593 transitions. Complement of second has 16 states. [2020-11-30 00:42:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:42:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2020-11-30 00:42:16,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 42 transitions. Stem has 42 letters. Loop has 26 letters. [2020-11-30 00:42:16,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:16,579 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:42:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:42:16,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:16,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,727 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:16,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:42:16,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:42:17,048 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-11-30 00:42:17,048 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-11-30 00:42:17,622 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 670 states and 816 transitions. Complement of second has 41 states. [2020-11-30 00:42:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:42:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2020-11-30 00:42:17,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 42 letters. Loop has 26 letters. [2020-11-30 00:42:17,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:17,635 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:42:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:17,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:42:17,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:17,834 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:17,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:17,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:17,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:17,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:42:17,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:42:18,159 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-11-30 00:42:18,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-11-30 00:42:18,647 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 542 states and 647 transitions. Complement of second has 15 states. [2020-11-30 00:42:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:42:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2020-11-30 00:42:18,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 42 letters. Loop has 26 letters. [2020-11-30 00:42:18,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:18,652 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:42:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:18,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:42:18,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:18,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:18,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:18,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:18,831 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:18,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:42:18,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:42:19,144 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-11-30 00:42:19,144 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-11-30 00:42:19,798 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 752 states and 919 transitions. Complement of second has 45 states. [2020-11-30 00:42:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-11-30 00:42:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:42:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2020-11-30 00:42:19,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 42 letters. Loop has 26 letters. [2020-11-30 00:42:19,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:19,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 68 letters. Loop has 26 letters. [2020-11-30 00:42:19,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:19,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 42 letters. Loop has 52 letters. [2020-11-30 00:42:19,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:42:19,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 752 states and 919 transitions. [2020-11-30 00:42:19,815 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2020-11-30 00:42:19,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 752 states to 483 states and 610 transitions. [2020-11-30 00:42:19,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2020-11-30 00:42:19,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 262 [2020-11-30 00:42:19,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 610 transitions. [2020-11-30 00:42:19,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:42:19,829 INFO L691 BuchiCegarLoop]: Abstraction has 483 states and 610 transitions. [2020-11-30 00:42:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 610 transitions. [2020-11-30 00:42:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 397. [2020-11-30 00:42:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-11-30 00:42:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 484 transitions. [2020-11-30 00:42:19,850 INFO L714 BuchiCegarLoop]: Abstraction has 397 states and 484 transitions. [2020-11-30 00:42:19,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:19,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 00:42:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:42:19,851 INFO L87 Difference]: Start difference. First operand 397 states and 484 transitions. Second operand 14 states. [2020-11-30 00:42:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:20,301 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2020-11-30 00:42:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:42:20,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 204 transitions. [2020-11-30 00:42:20,305 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:42:20,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2020-11-30 00:42:20,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:42:20,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:42:20,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:42:20,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:42:20,306 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:42:20,306 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:42:20,306 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:42:20,307 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 00:42:20,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:42:20,307 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:42:20,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:42:20,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:42:20 BoogieIcfgContainer [2020-11-30 00:42:20,315 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:42:20,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:42:20,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:42:20,316 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:42:20,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:56" (3/4) ... [2020-11-30 00:42:20,321 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:42:20,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:42:20,323 INFO L168 Benchmark]: Toolchain (without parser) took 25106.20 ms. Allocated memory was 92.3 MB in the beginning and 237.0 MB in the end (delta: 144.7 MB). Free memory was 61.3 MB in the beginning and 184.3 MB in the end (delta: -123.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:20,324 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 50.7 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:20,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.70 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 70.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:20,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 92.3 MB. Free memory was 70.6 MB in the beginning and 69.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:20,325 INFO L168 Benchmark]: Boogie Preprocessor took 23.88 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 68.5 MB in the end (delta: 863.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:20,326 INFO L168 Benchmark]: RCFGBuilder took 374.02 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 55.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:20,327 INFO L168 Benchmark]: BuchiAutomizer took 24270.75 ms. Allocated memory was 92.3 MB in the beginning and 237.0 MB in the end (delta: 144.7 MB). Free memory was 55.9 MB in the beginning and 184.3 MB in the end (delta: -128.4 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:20,327 INFO L168 Benchmark]: Witness Printer took 5.94 ms. Allocated memory is still 237.0 MB. Free memory is still 184.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:20,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory was 50.8 MB in the beginning and 50.7 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.70 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 70.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 92.3 MB. Free memory was 70.6 MB in the beginning and 69.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.88 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 68.5 MB in the end (delta: 863.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 374.02 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 55.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 24270.75 ms. Allocated memory was 92.3 MB in the beginning and 237.0 MB in the end (delta: 144.7 MB). Free memory was 55.9 MB in the beginning and 184.3 MB in the end (delta: -128.4 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.94 ms. Allocated memory is still 237.0 MB. Free memory is still 184.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 3 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 12 locations. One deterministic module has affine ranking function n and consists of 12 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 11 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 24.2s and 9 iterations. TraceHistogramMax:8. Analysis of lassos took 12.6s. Construction of modules took 2.9s. Büchi inclusion checks took 7.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 270 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 287 states and ocurred in iteration 7. Nontrivial modules had stage [3, 0, 1, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 373 SDtfs, 861 SDslu, 911 SDs, 0 SdLazy, 2367 SolverSat, 418 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI3 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf84 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf91 smp84 dnf100 smp100 tf111 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 33 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...