./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 92a849e92f30134540f9595cfce3299e46e1c2b1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:01:48,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:01:48,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:01:48,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:01:48,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:01:48,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:01:48,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:01:48,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:01:48,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:01:48,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:01:48,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:01:48,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:01:48,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:01:48,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:01:48,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:01:48,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:01:48,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:01:48,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:01:48,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:01:48,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:01:48,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:01:48,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:01:48,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:01:48,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:01:48,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:01:48,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:01:48,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:01:48,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:01:48,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:01:48,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:01:48,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:01:48,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:01:48,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:01:48,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:01:48,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:01:48,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:01:48,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:01:48,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:01:48,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:01:48,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:01:48,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:01:48,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:01:49,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:01:49,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:01:49,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:01:49,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:01:49,008 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:01:49,008 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:01:49,008 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:01:49,008 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:01:49,009 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:01:49,009 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:01:49,011 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:01:49,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:01:49,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:01:49,012 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:01:49,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:01:49,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:01:49,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:01:49,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:01:49,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:01:49,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:01:49,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:01:49,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:01:49,014 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:01:49,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:01:49,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:01:49,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:01:49,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:01:49,016 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:01:49,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:01:49,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:01:49,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:01:49,017 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:01:49,019 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:01:49,019 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92a849e92f30134540f9595cfce3299e46e1c2b1 [2020-11-30 01:01:49,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:01:49,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:01:49,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:01:49,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:01:49,379 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:01:49,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2020-11-30 01:01:49,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/data/1be15a90c/2399dd3395b545e0a158c424813240e4/FLAG2c395ae92 [2020-11-30 01:01:49,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:01:49,986 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2020-11-30 01:01:50,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/data/1be15a90c/2399dd3395b545e0a158c424813240e4/FLAG2c395ae92 [2020-11-30 01:01:50,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/data/1be15a90c/2399dd3395b545e0a158c424813240e4 [2020-11-30 01:01:50,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:01:50,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:01:50,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:01:50,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:01:50,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:01:50,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af7ecc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50, skipping insertion in model container [2020-11-30 01:01:50,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:01:50,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:01:50,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:01:50,615 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:01:50,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:01:50,648 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:01:50,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50 WrapperNode [2020-11-30 01:01:50,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:01:50,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:01:50,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:01:50,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:01:50,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:01:50,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:01:50,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:01:50,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:01:50,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:01:50,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:01:50,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:01:50,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:01:50,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:01:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-30 01:01:50,858 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-30 01:01:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:01:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-30 01:01:50,861 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-30 01:01:50,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:01:50,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:01:51,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:01:51,275 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:01:51,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:51 BoogieIcfgContainer [2020-11-30 01:01:51,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:01:51,279 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:01:51,279 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:01:51,294 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:01:51,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:01:51,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:01:50" (1/3) ... [2020-11-30 01:01:51,296 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ccdd353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:01:51, skipping insertion in model container [2020-11-30 01:01:51,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:01:51,297 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (2/3) ... [2020-11-30 01:01:51,297 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ccdd353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:01:51, skipping insertion in model container [2020-11-30 01:01:51,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:01:51,297 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:51" (3/3) ... [2020-11-30 01:01:51,299 INFO L373 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_6-2.c [2020-11-30 01:01:51,365 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:01:51,366 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:01:51,366 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:01:51,366 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:01:51,366 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:01:51,367 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:01:51,367 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:01:51,367 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:01:51,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-11-30 01:01:51,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 01:01:51,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:51,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:51,430 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:01:51,430 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:51,430 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:01:51,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-11-30 01:01:51,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 01:01:51,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:51,435 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:51,436 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:01:51,436 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:51,442 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 := 6; 22#L39true call main_#t~ret11 := fibo1(main_~x~0);< 27#fibo1ENTRYtrue [2020-11-30 01:01:51,443 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 01:01:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:51,450 INFO L82 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2020-11-30 01:01:51,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:51,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363072038] [2020-11-30 01:01:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:51,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:51,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:51,610 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2020-11-30 01:01:51,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:51,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587007723] [2020-11-30 01:01:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:51,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:51,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:51,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2020-11-30 01:01:51,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:51,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957566749] [2020-11-30 01:01:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:51,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:51,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:51,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:52,139 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:01:52,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:01:52,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:01:52,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:01:52,145 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:01:52,145 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:52,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:01:52,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:01:52,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration1_Loop [2020-11-30 01:01:52,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:01:52,147 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:01:52,170 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 01:01:52,179 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 01:01:52,191 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 01:01:52,196 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 01:01:52,201 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 01:01:52,206 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 01:01:52,210 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 01:01:52,216 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 01:01:52,220 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 01:01:52,243 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 01:01:52,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:01:52,464 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:52,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,477 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 01:01:52,492 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,492 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:52,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,543 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:52,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,574 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,574 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:52,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,631 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,631 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:52,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,671 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,671 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:52,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,708 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,708 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:52,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,754 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:52,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,783 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:01:52,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:52,787 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:52,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:52,816 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:52,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:01:52,865 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:52,939 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:01:52,941 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:01:52,941 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:01:52,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:01:52,942 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:01:52,942 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:01:52,942 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:52,942 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:01:52,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:01:52,942 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration1_Loop [2020-11-30 01:01:52,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:01:52,942 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:01:52,944 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 01:01:52,950 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 01:01:52,957 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 01:01:52,962 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 01:01:52,967 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 01:01:52,980 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 01:01:52,986 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 01:01:52,990 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 01:01:52,996 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 01:01:53,015 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 01:01:53,160 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:01:53,165 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,173 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 01:01:53,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,180 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 01:01:53,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,212 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 01:01:53,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:53,218 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:53,277 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 01:01:53,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:53,284 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,325 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 01:01:53,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:53,330 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,358 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 01:01:53,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,362 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,362 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 01:01:53,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,423 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 01:01:53,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:53,430 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,471 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 01:01:53,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,473 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:53,480 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:53,508 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 01:01:53,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:53,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:53,549 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 01:01:53,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:53,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:53,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:53,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:53,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:53,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:53,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:53,557 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:01:53,560 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 01:01:53,560 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:53,564 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:01:53,564 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:01:53,564 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:01:53,565 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-11-30 01:01:53,591 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:01:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:53,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:01:53,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:01:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:53,902 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 01:01:53,921 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 01:01:53,922 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 6 states. [2020-11-30 01:01:54,197 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 01:01:54,198 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 01:01:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:01:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-11-30 01:01:54,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2020-11-30 01:01:54,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:01:54,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-30 01:01:54,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:01:54,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2020-11-30 01:01:54,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:01:54,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2020-11-30 01:01:54,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 01:01:54,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2020-11-30 01:01:54,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-11-30 01:01:54,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-11-30 01:01:54,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2020-11-30 01:01:54,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:01:54,231 INFO L691 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-11-30 01:01:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2020-11-30 01:01:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-11-30 01:01:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 01:01:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2020-11-30 01:01:54,271 INFO L714 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-11-30 01:01:54,271 INFO L594 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-11-30 01:01:54,272 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:01:54,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2020-11-30 01:01:54,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 01:01:54,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:54,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:54,277 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,277 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,277 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 := 6; 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 01:01:54,277 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 01:01:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,278 INFO L82 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2020-11-30 01:01:54,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695680866] [2020-11-30 01:01:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 01:01:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,429 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 01:01:54,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695680866] [2020-11-30 01:01:54,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:54,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:01:54,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627503708] [2020-11-30 01:01:54,434 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:01:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2020-11-30 01:01:54,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300565746] [2020-11-30 01:01:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,504 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 01:01:54,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300565746] [2020-11-30 01:01:54,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:54,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:01:54,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883769232] [2020-11-30 01:01:54,506 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:01:54,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:01:54,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:01:54,522 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand 6 states. [2020-11-30 01:01:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:54,636 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2020-11-30 01:01:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:01:54,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2020-11-30 01:01:54,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 01:01:54,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2020-11-30 01:01:54,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2020-11-30 01:01:54,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-11-30 01:01:54,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2020-11-30 01:01:54,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:01:54,645 INFO L691 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-11-30 01:01:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2020-11-30 01:01:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-11-30 01:01:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 01:01:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-11-30 01:01:54,670 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-11-30 01:01:54,670 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-11-30 01:01:54,670 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:01:54,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2020-11-30 01:01:54,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-30 01:01:54,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:54,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:54,679 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,680 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,680 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 := 6; 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 01:01:54,681 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 01:01:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,682 INFO L82 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2020-11-30 01:01:54,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942438781] [2020-11-30 01:01:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 01:01:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,815 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 01:01:54,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942438781] [2020-11-30 01:01:54,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605471052] [2020-11-30 01:01:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:01:54,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:54,918 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 01:01:54,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:01:54,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-30 01:01:54,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291504653] [2020-11-30 01:01:54,921 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:01:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2020-11-30 01:01:54,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279399242] [2020-11-30 01:01:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:54,947 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:54,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:54,957 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:55,216 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:01:55,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:01:55,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:01:55,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:01:55,216 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:01:55,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:55,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:01:55,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:01:55,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration3_Loop [2020-11-30 01:01:55,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:01:55,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:01:55,218 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 01:01:55,224 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 01:01:55,228 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 01:01:55,232 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 01:01:55,237 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 01:01:55,247 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 01:01:55,250 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 01:01:55,253 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 01:01:55,257 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 01:01:55,365 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:01:55,365 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:55,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:55,413 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:55,418 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:55,419 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:55,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:55,466 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 01:01:55,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:55,470 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:55,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:55,516 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 01:01:55,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:55,521 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:55,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:55,566 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:55,577 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:01:55,577 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:55,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:01:55,624 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:55,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:01:55,678 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:56,437 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:01:56,440 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:01:56,440 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:01:56,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:01:56,441 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:01:56,441 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:01:56,441 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:56,441 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:01:56,441 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:01:56,441 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration3_Loop [2020-11-30 01:01:56,441 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:01:56,441 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:01:56,443 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 01:01:56,450 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 01:01:56,454 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 01:01:56,458 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 01:01:56,473 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 01:01:56,478 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 01:01:56,482 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 01:01:56,486 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 01:01:56,492 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 01:01:56,597 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:01:56,597 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:56,609 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 01:01:56,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:56,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:56,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:56,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:56,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:56,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:56,612 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 01:01:56,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:01:56,662 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 01:01:56,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:56,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:56,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:56,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:56,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:56,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:56,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:56,669 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:56,716 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 01:01:56,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:56,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:56,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:56,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:56,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:56,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:56,721 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 01:01:56,731 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:56,763 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 01:01:56,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:01:56,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:01:56,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:01:56,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:01:56,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:01:56,767 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:01:56,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:01:56,770 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:01:56,784 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:01:56,784 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:56,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:01:56,787 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:01:56,787 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:01:56,788 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2020-11-30 01:01:56,812 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:01:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:56,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:01:56,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:57,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:01:57,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:57,233 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 01:01:57,234 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 01:01:57,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand 10 states. [2020-11-30 01:01:57,990 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 01:01:57,992 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 01:01:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:01:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2020-11-30 01:01:57,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2020-11-30 01:01:57,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:01:57,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2020-11-30 01:01:57,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:01:57,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2020-11-30 01:01:57,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:01:57,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2020-11-30 01:01:58,007 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:01:58,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2020-11-30 01:01:58,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2020-11-30 01:01:58,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2020-11-30 01:01:58,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2020-11-30 01:01:58,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:01:58,019 INFO L691 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2020-11-30 01:01:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2020-11-30 01:01:58,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-11-30 01:01:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-30 01:01:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2020-11-30 01:01:58,044 INFO L714 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2020-11-30 01:01:58,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:58,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:01:58,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:01:58,046 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand 10 states. [2020-11-30 01:01:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:58,328 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2020-11-30 01:01:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:01:58,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2020-11-30 01:01:58,336 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:01:58,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2020-11-30 01:01:58,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2020-11-30 01:01:58,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2020-11-30 01:01:58,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2020-11-30 01:01:58,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:01:58,345 INFO L691 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2020-11-30 01:01:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2020-11-30 01:01:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2020-11-30 01:01:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-30 01:01:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-11-30 01:01:58,370 INFO L714 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-11-30 01:01:58,370 INFO L594 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-11-30 01:01:58,370 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:01:58,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2020-11-30 01:01:58,377 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:01:58,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:58,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:58,383 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 01:01:58,386 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 01:01:58,386 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 := 6; 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~ret8;havoc #t~ret7; 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~ret8;havoc #t~ret7; 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~ret8;havoc #t~ret7; 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 01:01:58,387 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~ret8;havoc #t~ret7; 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~ret8;havoc #t~ret7; 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 01:01:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2020-11-30 01:01:58,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:58,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913996375] [2020-11-30 01:01:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-30 01:01:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:01:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-30 01:01:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 24 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-11-30 01:01:58,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913996375] [2020-11-30 01:01:58,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415406715] [2020-11-30 01:01:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:58,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:01:58,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 91 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-11-30 01:01:59,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:01:59,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-11-30 01:01:59,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325906138] [2020-11-30 01:01:59,265 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:01:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:59,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1411437133, now seen corresponding path program 1 times [2020-11-30 01:01:59,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:59,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231647991] [2020-11-30 01:01:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-30 01:01:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:01:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:01:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,480 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 01:01:59,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231647991] [2020-11-30 01:01:59,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325352404] [2020-11-30 01:01:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:01:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:59,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:01:59,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:01:59,773 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 01:01:59,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:01:59,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2020-11-30 01:01:59,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381442290] [2020-11-30 01:01:59,776 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:01:59,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:59,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:01:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:01:59,778 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand 12 states. [2020-11-30 01:02:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:00,205 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2020-11-30 01:02:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:02:00,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2020-11-30 01:02:00,214 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:02:00,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2020-11-30 01:02:00,230 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2020-11-30 01:02:00,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2020-11-30 01:02:00,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2020-11-30 01:02:00,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:00,234 INFO L691 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2020-11-30 01:02:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2020-11-30 01:02:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2020-11-30 01:02:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-30 01:02:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2020-11-30 01:02:00,269 INFO L714 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-11-30 01:02:00,269 INFO L594 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-11-30 01:02:00,269 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:02:00,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2020-11-30 01:02:00,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:02:00,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:00,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:00,275 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 01:02:00,275 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 01:02:00,275 INFO L794 eck$LassoCheckResult]: Stem: 2335#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2326#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 6; 2285#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2307#fibo1ENTRY ~n := #in~n; 2284#L10 assume !(~n < 1); 2286#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2334#fibo2ENTRY ~n := #in~n; 2424#L20 assume !(~n < 1); 2421#L22 assume !(1 == ~n); 2316#L25 call #t~ret9 := fibo1(~n - 1);< 2318#fibo1ENTRY ~n := #in~n; 2367#L10 assume !(~n < 1); 2366#L12 assume !(1 == ~n); 2272#L15 call #t~ret7 := fibo2(~n - 1);< 2353#fibo2ENTRY ~n := #in~n; 2374#L20 assume !(~n < 1); 2372#L22 assume !(1 == ~n); 2295#L25 call #t~ret9 := fibo1(~n - 1);< 2318#fibo1ENTRY ~n := #in~n; 2375#L10 assume !(~n < 1); 2386#L12 assume 1 == ~n;#res := 1; 2387#fibo1FINAL assume true; 2448#fibo1EXIT >#48#return; 2328#L25-1 call #t~ret10 := fibo1(~n - 2);< 2327#fibo1ENTRY ~n := #in~n; 2329#L10 assume ~n < 1;#res := 0; 2451#fibo1FINAL assume true; 2450#fibo1EXIT >#50#return; 2271#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 2274#fibo2FINAL assume true; 2398#fibo2EXIT >#52#return; 2339#L15-1 [2020-11-30 01:02:00,275 INFO L796 eck$LassoCheckResult]: Loop: 2339#L15-1 call #t~ret8 := fibo2(~n - 2);< 2336#fibo2ENTRY ~n := #in~n; 2340#L20 assume !(~n < 1); 2422#L22 assume !(1 == ~n); 2403#L25 call #t~ret9 := fibo1(~n - 1);< 2415#fibo1ENTRY ~n := #in~n; 2426#L10 assume !(~n < 1); 2418#L12 assume !(1 == ~n); 2337#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2340#L20 assume !(~n < 1); 2422#L22 assume !(1 == ~n); 2403#L25 call #t~ret9 := fibo1(~n - 1);< 2415#fibo1ENTRY ~n := #in~n; 2426#L10 assume !(~n < 1); 2418#L12 assume !(1 == ~n); 2337#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2340#L20 assume !(~n < 1); 2422#L22 assume 1 == ~n;#res := 1; 2423#fibo2FINAL assume true; 2408#fibo2EXIT >#52#return; 2339#L15-1 call #t~ret8 := fibo2(~n - 2);< 2336#fibo2ENTRY ~n := #in~n; 2340#L20 assume ~n < 1;#res := 0; 2425#fibo2FINAL assume true; 2428#fibo2EXIT >#54#return; 2399#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 2420#fibo1FINAL assume true; 2413#fibo1EXIT >#48#return; 2404#L25-1 call #t~ret10 := fibo1(~n - 2);< 2415#fibo1ENTRY ~n := #in~n; 2426#L10 assume !(~n < 1); 2418#L12 assume !(1 == ~n); 2337#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2340#L20 assume !(~n < 1); 2422#L22 assume 1 == ~n;#res := 1; 2423#fibo2FINAL assume true; 2408#fibo2EXIT >#52#return; 2339#L15-1 call #t~ret8 := fibo2(~n - 2);< 2336#fibo2ENTRY ~n := #in~n; 2340#L20 assume ~n < 1;#res := 0; 2425#fibo2FINAL assume true; 2428#fibo2EXIT >#54#return; 2399#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 2420#fibo1FINAL assume true; 2413#fibo1EXIT >#50#return; 2409#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 2406#fibo2FINAL assume true; 2402#fibo2EXIT >#52#return; 2339#L15-1 [2020-11-30 01:02:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2020-11-30 01:02:00,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:00,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854740012] [2020-11-30 01:02:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-30 01:02:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:02:00,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854740012] [2020-11-30 01:02:00,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358117474] [2020-11-30 01:02:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:02:00,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:02:00,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:00,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-11-30 01:02:00,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158178564] [2020-11-30 01:02:00,583 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:02:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:00,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1108085027, now seen corresponding path program 1 times [2020-11-30 01:02:00,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:00,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004394916] [2020-11-30 01:02:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:02:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 01:02:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-30 01:02:00,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004394916] [2020-11-30 01:02:00,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660019451] [2020-11-30 01:02:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:00,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:02:00,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-30 01:02:01,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:01,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2020-11-30 01:02:01,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677541202] [2020-11-30 01:02:01,008 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:02:01,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:01,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 01:02:01,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:02:01,010 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand 15 states. [2020-11-30 01:02:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:01,508 INFO L93 Difference]: Finished difference Result 206 states and 270 transitions. [2020-11-30 01:02:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:02:01,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 270 transitions. [2020-11-30 01:02:01,514 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:02:01,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 203 states and 266 transitions. [2020-11-30 01:02:01,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2020-11-30 01:02:01,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2020-11-30 01:02:01,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 266 transitions. [2020-11-30 01:02:01,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:01,523 INFO L691 BuchiCegarLoop]: Abstraction has 203 states and 266 transitions. [2020-11-30 01:02:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 266 transitions. [2020-11-30 01:02:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2020-11-30 01:02:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-30 01:02:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2020-11-30 01:02:01,554 INFO L714 BuchiCegarLoop]: Abstraction has 194 states and 251 transitions. [2020-11-30 01:02:01,554 INFO L594 BuchiCegarLoop]: Abstraction has 194 states and 251 transitions. [2020-11-30 01:02:01,563 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 01:02:01,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 194 states and 251 transitions. [2020-11-30 01:02:01,565 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-11-30 01:02:01,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:01,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:01,577 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:01,577 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 01:02:01,577 INFO L794 eck$LassoCheckResult]: Stem: 3123#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3122#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 6; 3080#L39 call main_#t~ret11 := fibo1(main_~x~0);< 3097#fibo1ENTRY ~n := #in~n; 3079#L10 assume !(~n < 1); 3081#L12 assume !(1 == ~n); 3090#L15 call #t~ret7 := fibo2(~n - 1);< 3130#fibo2ENTRY ~n := #in~n; 3133#L20 assume !(~n < 1); 3089#L22 assume !(1 == ~n); 3091#L25 call #t~ret9 := fibo1(~n - 1);< 3115#fibo1ENTRY ~n := #in~n; 3192#L10 assume !(~n < 1); 3191#L12 assume !(1 == ~n); 3095#L15 call #t~ret7 := fibo2(~n - 1);< 3149#fibo2ENTRY ~n := #in~n; 3180#L20 assume !(~n < 1); 3178#L22 assume !(1 == ~n); 3136#L25 call #t~ret9 := fibo1(~n - 1);< 3163#fibo1ENTRY ~n := #in~n; 3166#L10 assume !(~n < 1); 3165#L12 assume !(1 == ~n); 3094#L15 call #t~ret7 := fibo2(~n - 1);< 3149#fibo2ENTRY ~n := #in~n; 3180#L20 assume !(~n < 1); 3178#L22 assume !(1 == ~n); 3136#L25 call #t~ret9 := fibo1(~n - 1);< 3163#fibo1ENTRY ~n := #in~n; 3168#L10 assume !(~n < 1); 3186#L12 assume 1 == ~n;#res := 1; 3187#fibo1FINAL assume true; 3247#fibo1EXIT >#48#return; 3245#L25-1 call #t~ret10 := fibo1(~n - 2);< 3246#fibo1ENTRY ~n := #in~n; 3249#L10 assume ~n < 1;#res := 0; 3248#fibo1FINAL assume true; 3244#fibo1EXIT >#50#return; 3243#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 3242#fibo2FINAL assume true; 3226#fibo2EXIT >#52#return; 3113#L15-1 [2020-11-30 01:02:01,578 INFO L796 eck$LassoCheckResult]: Loop: 3113#L15-1 call #t~ret8 := fibo2(~n - 2);< 3129#fibo2ENTRY ~n := #in~n; 3138#L20 assume !(~n < 1); 3140#L22 assume !(1 == ~n); 3109#L25 call #t~ret9 := fibo1(~n - 1);< 3114#fibo1ENTRY ~n := #in~n; 3196#L10 assume !(~n < 1); 3194#L12 assume !(1 == ~n); 3111#L15 call #t~ret7 := fibo2(~n - 1);< 3129#fibo2ENTRY ~n := #in~n; 3138#L20 assume !(~n < 1); 3140#L22 assume !(1 == ~n); 3109#L25 call #t~ret9 := fibo1(~n - 1);< 3114#fibo1ENTRY ~n := #in~n; 3196#L10 assume !(~n < 1); 3194#L12 assume !(1 == ~n); 3111#L15 call #t~ret7 := fibo2(~n - 1);< 3129#fibo2ENTRY ~n := #in~n; 3138#L20 assume !(~n < 1); 3140#L22 assume 1 == ~n;#res := 1; 3218#fibo2FINAL assume true; 3231#fibo2EXIT >#52#return; 3113#L15-1 call #t~ret8 := fibo2(~n - 2);< 3129#fibo2ENTRY ~n := #in~n; 3138#L20 assume ~n < 1;#res := 0; 3139#fibo2FINAL assume true; 3227#fibo2EXIT >#54#return; 3225#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 3224#fibo1FINAL assume true; 3220#fibo1EXIT >#48#return; 3127#L25-1 call #t~ret10 := fibo1(~n - 2);< 3114#fibo1ENTRY ~n := #in~n; 3196#L10 assume !(~n < 1); 3194#L12 assume !(1 == ~n); 3111#L15 call #t~ret7 := fibo2(~n - 1);< 3129#fibo2ENTRY ~n := #in~n; 3138#L20 assume !(~n < 1); 3140#L22 assume 1 == ~n;#res := 1; 3218#fibo2FINAL assume true; 3231#fibo2EXIT >#52#return; 3113#L15-1 call #t~ret8 := fibo2(~n - 2);< 3129#fibo2ENTRY ~n := #in~n; 3138#L20 assume ~n < 1;#res := 0; 3139#fibo2FINAL assume true; 3227#fibo2EXIT >#54#return; 3225#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 3224#fibo1FINAL assume true; 3220#fibo1EXIT >#50#return; 3221#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 3229#fibo2FINAL assume true; 3228#fibo2EXIT >#52#return; 3113#L15-1 [2020-11-30 01:02:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1100171425, now seen corresponding path program 2 times [2020-11-30 01:02:01,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:01,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534453932] [2020-11-30 01:02:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-30 01:02:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 01:02:01,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534453932] [2020-11-30 01:02:01,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192837975] [2020-11-30 01:02:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:01,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:02:01,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:02:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:02:01,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:02:02,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:02,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 18 [2020-11-30 01:02:02,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671627114] [2020-11-30 01:02:02,015 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:02:02,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:02,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1108085027, now seen corresponding path program 2 times [2020-11-30 01:02:02,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:02,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669232008] [2020-11-30 01:02:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-30 01:02:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 01:02:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-11-30 01:02:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669232008] [2020-11-30 01:02:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996501903] [2020-11-30 01:02:02,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:02,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:02:02,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:02:02,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:02:02,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-30 01:02:02,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:02,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2020-11-30 01:02:02,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209381413] [2020-11-30 01:02:02,392 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:02:02,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:02,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 01:02:02,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:02:02,394 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. cyclomatic complexity: 62 Second operand 19 states. [2020-11-30 01:02:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:03,274 INFO L93 Difference]: Finished difference Result 246 states and 296 transitions. [2020-11-30 01:02:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 01:02:03,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 296 transitions. [2020-11-30 01:02:03,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2020-11-30 01:02:03,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 163 states and 194 transitions. [2020-11-30 01:02:03,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114 [2020-11-30 01:02:03,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114 [2020-11-30 01:02:03,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 194 transitions. [2020-11-30 01:02:03,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:03,295 INFO L691 BuchiCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-11-30 01:02:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 194 transitions. [2020-11-30 01:02:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2020-11-30 01:02:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-30 01:02:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 188 transitions. [2020-11-30 01:02:03,317 INFO L714 BuchiCegarLoop]: Abstraction has 157 states and 188 transitions. [2020-11-30 01:02:03,317 INFO L594 BuchiCegarLoop]: Abstraction has 157 states and 188 transitions. [2020-11-30 01:02:03,317 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 01:02:03,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 188 transitions. [2020-11-30 01:02:03,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2020-11-30 01:02:03,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:03,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:03,324 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:03,324 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:03,327 INFO L794 eck$LassoCheckResult]: Stem: 4014#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); 4010#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 6; 3996#L39 call main_#t~ret11 := fibo1(main_~x~0);< 3997#fibo1ENTRY ~n := #in~n; 4046#L10 assume !(~n < 1); 4007#L12 assume !(1 == ~n); 3990#L15 call #t~ret7 := fibo2(~n - 1);< 4012#fibo2ENTRY ~n := #in~n; 4016#L20 assume !(~n < 1); 3989#L22 assume !(1 == ~n); 3975#L25 call #t~ret9 := fibo1(~n - 1);< 4005#fibo1ENTRY ~n := #in~n; 3974#L10 assume !(~n < 1); 3976#L12 assume !(1 == ~n); 4021#L15 call #t~ret7 := fibo2(~n - 1);< 4032#fibo2ENTRY ~n := #in~n; 4038#L20 assume !(~n < 1); 4034#L22 assume !(1 == ~n); 4018#L25 call #t~ret9 := fibo1(~n - 1);< 4041#fibo1ENTRY ~n := #in~n; 4042#L10 assume !(~n < 1); 4062#L12 assume !(1 == ~n); 4058#L15 call #t~ret7 := fibo2(~n - 1);< 4059#fibo2ENTRY ~n := #in~n; 4064#L20 assume !(~n < 1); 4063#L22 assume 1 == ~n;#res := 1; 4061#fibo2FINAL assume true; 4057#fibo2EXIT >#52#return; 4054#L15-1 call #t~ret8 := fibo2(~n - 2);< 4055#fibo2ENTRY ~n := #in~n; 4060#L20 assume ~n < 1;#res := 0; 4056#fibo2FINAL assume true; 4053#fibo2EXIT >#54#return; 4052#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 4048#fibo1FINAL assume true; 4045#fibo1EXIT >#48#return; 3971#L25-1 call #t~ret10 := fibo1(~n - 2);< 4043#fibo1ENTRY ~n := #in~n; 3970#L10 assume ~n < 1;#res := 0; 3972#fibo1FINAL assume true; 4006#fibo1EXIT >#50#return; 4071#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 4119#fibo2FINAL assume true; 4110#fibo2EXIT >#52#return; 3966#L15-1 call #t~ret8 := fibo2(~n - 2);< 4083#fibo2ENTRY [2020-11-30 01:02:03,327 INFO L796 eck$LassoCheckResult]: Loop: 4083#fibo2ENTRY ~n := #in~n; 4084#L20 assume !(~n < 1); 4077#L22 assume !(1 == ~n); 4070#L25 call #t~ret9 := fibo1(~n - 1);< 4075#fibo1ENTRY ~n := #in~n; 4103#L10 assume !(~n < 1); 4101#L12 assume !(1 == ~n); 3965#L15 call #t~ret7 := fibo2(~n - 1);< 4083#fibo2ENTRY [2020-11-30 01:02:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1560322136, now seen corresponding path program 1 times [2020-11-30 01:02:03,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:03,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119243973] [2020-11-30 01:02:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-30 01:02:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 01:02:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 01:02:03,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119243973] [2020-11-30 01:02:03,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667570862] [2020-11-30 01:02:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:03,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:02:03,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 01:02:03,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:03,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 17 [2020-11-30 01:02:03,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281876349] [2020-11-30 01:02:03,764 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:02:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:03,765 INFO L82 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2020-11-30 01:02:03,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:03,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634411434] [2020-11-30 01:02:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:03,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:03,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:03,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:03,915 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:03,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:03,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:03,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:03,915 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:02:03,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:03,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:03,916 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:03,916 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration7_Loop [2020-11-30 01:02:03,916 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:03,916 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:03,917 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 01:02:03,930 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 01:02:03,933 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 01:02:03,937 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 01:02:03,941 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 01:02:03,945 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 01:02:03,948 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 01:02:03,952 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 01:02:03,956 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 01:02:03,959 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 01:02:04,039 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:04,039 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:04,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:04,055 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:04,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:02:04,108 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:04,213 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:02:04,215 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:04,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:04,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:04,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:04,215 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:02:04,215 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:04,215 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:04,215 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:04,215 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration7_Loop [2020-11-30 01:02:04,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:04,216 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:04,216 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 01:02:04,221 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 01:02:04,224 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 01:02:04,232 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 01:02:04,236 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 01:02:04,238 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 01:02:04,241 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 01:02:04,243 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 01:02:04,246 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 01:02:04,252 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 01:02:04,309 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:04,309 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:04,318 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 01:02:04,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:04,320 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:04,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:04,320 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:04,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:04,321 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:04,321 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:04,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:04,353 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 01:02:04,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:04,359 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:04,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:04,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:04,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:04,361 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:04,361 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 01:02:04,366 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:04,412 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 01:02:04,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:04,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:04,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:04,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:04,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:04,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:04,416 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 01:02:04,422 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:02:04,426 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 01:02:04,426 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:04,432 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:02:04,432 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:02:04,432 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:02:04,432 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:04,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:02:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:04,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:02:04,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:04,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:04,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:04,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:04,671 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:04,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:04,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:04,765 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 01:02:04,766 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 01:02:04,766 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 157 states and 188 transitions. cyclomatic complexity: 35 Second operand 7 states. [2020-11-30 01:02:04,994 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 157 states and 188 transitions. cyclomatic complexity: 35. Second operand 7 states. Result 225 states and 264 transitions. Complement of second has 16 states. [2020-11-30 01:02:04,996 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 01:02:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2020-11-30 01:02:04,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 26 transitions. Stem has 45 letters. Loop has 8 letters. [2020-11-30 01:02:04,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:04,997 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:05,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:02:05,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:05,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,163 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:05,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:05,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:05,278 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 01:02:05,279 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 01:02:05,279 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 157 states and 188 transitions. cyclomatic complexity: 35 Second operand 7 states. [2020-11-30 01:02:05,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 157 states and 188 transitions. cyclomatic complexity: 35. Second operand 7 states. Result 225 states and 264 transitions. Complement of second has 16 states. [2020-11-30 01:02:05,483 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 01:02:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2020-11-30 01:02:05,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 26 transitions. Stem has 45 letters. Loop has 8 letters. [2020-11-30 01:02:05,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:05,484 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:05,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:05,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:02:05,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:05,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:05,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:05,738 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 01:02:05,739 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 01:02:05,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 157 states and 188 transitions. cyclomatic complexity: 35 Second operand 7 states. [2020-11-30 01:02:05,979 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 157 states and 188 transitions. cyclomatic complexity: 35. Second operand 7 states. Result 314 states and 366 transitions. Complement of second has 23 states. [2020-11-30 01:02:05,982 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 01:02:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2020-11-30 01:02:05,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 8 letters. [2020-11-30 01:02:05,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:05,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 53 letters. Loop has 8 letters. [2020-11-30 01:02:05,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:05,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 16 letters. [2020-11-30 01:02:05,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:05,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 314 states and 366 transitions. [2020-11-30 01:02:05,999 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2020-11-30 01:02:06,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 314 states to 234 states and 279 transitions. [2020-11-30 01:02:06,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 132 [2020-11-30 01:02:06,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2020-11-30 01:02:06,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 234 states and 279 transitions. [2020-11-30 01:02:06,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:06,009 INFO L691 BuchiCegarLoop]: Abstraction has 234 states and 279 transitions. [2020-11-30 01:02:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states and 279 transitions. [2020-11-30 01:02:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 215. [2020-11-30 01:02:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-30 01:02:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 255 transitions. [2020-11-30 01:02:06,036 INFO L714 BuchiCegarLoop]: Abstraction has 215 states and 255 transitions. [2020-11-30 01:02:06,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:06,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 01:02:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:02:06,038 INFO L87 Difference]: Start difference. First operand 215 states and 255 transitions. Second operand 17 states. [2020-11-30 01:02:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:06,472 INFO L93 Difference]: Finished difference Result 220 states and 258 transitions. [2020-11-30 01:02:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:02:06,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 220 states and 258 transitions. [2020-11-30 01:02:06,490 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2020-11-30 01:02:06,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 220 states to 218 states and 256 transitions. [2020-11-30 01:02:06,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2020-11-30 01:02:06,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2020-11-30 01:02:06,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 256 transitions. [2020-11-30 01:02:06,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:06,498 INFO L691 BuchiCegarLoop]: Abstraction has 218 states and 256 transitions. [2020-11-30 01:02:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states and 256 transitions. [2020-11-30 01:02:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2020-11-30 01:02:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-11-30 01:02:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 248 transitions. [2020-11-30 01:02:06,510 INFO L714 BuchiCegarLoop]: Abstraction has 210 states and 248 transitions. [2020-11-30 01:02:06,510 INFO L594 BuchiCegarLoop]: Abstraction has 210 states and 248 transitions. [2020-11-30 01:02:06,510 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 01:02:06,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 210 states and 248 transitions. [2020-11-30 01:02:06,513 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2020-11-30 01:02:06,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:06,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:06,514 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:06,514 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:06,515 INFO L794 eck$LassoCheckResult]: Stem: 6182#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); 6181#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 6; 6152#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6153#fibo1ENTRY ~n := #in~n; 6262#L10 assume !(~n < 1); 6261#L12 assume !(1 == ~n); 6257#L15 call #t~ret7 := fibo2(~n - 1);< 6260#fibo2ENTRY ~n := #in~n; 6259#L20 assume !(~n < 1); 6258#L22 assume !(1 == ~n); 6250#L25 call #t~ret9 := fibo1(~n - 1);< 6256#fibo1ENTRY ~n := #in~n; 6254#L10 assume !(~n < 1); 6252#L12 assume !(1 == ~n); 6129#L15 call #t~ret7 := fibo2(~n - 1);< 6209#fibo2ENTRY ~n := #in~n; 6248#L20 assume !(~n < 1); 6243#L22 assume !(1 == ~n); 6196#L25 call #t~ret9 := fibo1(~n - 1);< 6220#fibo1ENTRY ~n := #in~n; 6236#L10 assume !(~n < 1); 6235#L12 assume !(1 == ~n); 6232#L15 call #t~ret7 := fibo2(~n - 1);< 6233#fibo2ENTRY ~n := #in~n; 6240#L20 assume !(~n < 1); 6239#L22 assume 1 == ~n;#res := 1; 6238#fibo2FINAL assume true; 6231#fibo2EXIT >#52#return; 6228#L15-1 call #t~ret8 := fibo2(~n - 2);< 6229#fibo2ENTRY ~n := #in~n; 6234#L20 assume ~n < 1;#res := 0; 6230#fibo2FINAL assume true; 6227#fibo2EXIT >#54#return; 6226#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 6225#fibo1FINAL assume true; 6219#fibo1EXIT >#48#return; 6211#L25-1 call #t~ret10 := fibo1(~n - 2);< 6180#fibo1ENTRY ~n := #in~n; 6215#L10 assume !(~n < 1); 6213#L12 assume !(1 == ~n); 6166#L15 call #t~ret7 := fibo2(~n - 1);< 6210#fibo2ENTRY ~n := #in~n; 6207#L20 assume !(~n < 1); 6203#L22 assume 1 == ~n;#res := 1; 6204#fibo2FINAL assume true; 6291#fibo2EXIT >#52#return; 6141#L15-1 [2020-11-30 01:02:06,515 INFO L796 eck$LassoCheckResult]: Loop: 6141#L15-1 call #t~ret8 := fibo2(~n - 2);< 6284#fibo2ENTRY ~n := #in~n; 6286#L20 assume !(~n < 1); 6279#L22 assume !(1 == ~n); 6138#L25 call #t~ret9 := fibo1(~n - 1);< 6184#fibo1ENTRY ~n := #in~n; 6137#L10 assume !(~n < 1); 6139#L12 assume !(1 == ~n); 6270#L15 call #t~ret7 := fibo2(~n - 1);< 6186#fibo2ENTRY ~n := #in~n; 6293#L20 assume !(~n < 1); 6302#L22 assume 1 == ~n;#res := 1; 6301#fibo2FINAL assume true; 6290#fibo2EXIT >#52#return; 6141#L15-1 [2020-11-30 01:02:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash -663651953, now seen corresponding path program 1 times [2020-11-30 01:02:06,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:06,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097798012] [2020-11-30 01:02:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-30 01:02:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-30 01:02:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 01:02:06,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097798012] [2020-11-30 01:02:06,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969552929] [2020-11-30 01:02:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:06,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:02:06,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:02:06,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:06,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-11-30 01:02:06,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752594455] [2020-11-30 01:02:06,851 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:02:06,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2020-11-30 01:02:06,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:06,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854786261] [2020-11-30 01:02:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:06,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:06,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:06,868 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:07,104 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:07,104 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:07,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:07,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:07,104 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:02:07,104 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,104 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:07,104 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:07,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration8_Loop [2020-11-30 01:02:07,105 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:07,105 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:07,106 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 01:02:07,111 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 01:02:07,114 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 01:02:07,118 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 01:02:07,122 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 01:02:07,126 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 01:02:07,134 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 01:02:07,145 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 01:02:07,150 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 01:02:07,265 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:07,265 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:07,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,272 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:07,277 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:07,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:07,316 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:07,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:07,346 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:07,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:07,374 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:07,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:07,423 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:07,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:07,455 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:07,485 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:07,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:02:07,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:08,741 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:02:08,743 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:08,743 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:08,743 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:08,743 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:08,743 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:02:08,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:08,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:08,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:08,744 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration8_Loop [2020-11-30 01:02:08,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:08,744 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:08,745 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 01:02:08,760 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 01:02:08,764 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 01:02:08,767 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 01:02:08,769 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 01:02:08,772 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 01:02:08,775 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 01:02:08,778 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 01:02:08,787 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 01:02:08,852 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:08,852 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:08,863 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 01:02:08,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:08,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:08,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:08,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:08,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:08,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:08,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:08,868 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:08,894 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 01:02:08,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:08,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:08,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:08,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:08,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:08,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:08,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:08,899 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:08,925 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 01:02:08,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:08,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:08,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:08,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:08,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:08,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:08,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:08,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:08,958 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 01:02:08,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:08,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:08,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:08,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:08,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:08,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:08,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:08,962 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:08,991 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 01:02:08,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:08,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:08,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:08,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:08,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:08,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:08,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:08,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:09,021 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 01:02:09,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:09,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:09,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:09,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:09,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:09,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:09,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:09,025 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:09,051 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 01:02:09,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:09,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:09,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:09,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:09,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:09,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:09,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:09,055 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:09,084 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 01:02:09,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:09,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:09,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:09,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:09,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:09,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:09,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:09,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:02:09,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:02:09,095 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:09,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:02:09,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:02:09,098 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:02:09,098 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2020-11-30 01:02:09,122 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:02:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:09,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:02:09,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:09,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:09,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:09,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:02:09,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:09,452 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 01:02:09,452 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 01:02:09,453 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 210 states and 248 transitions. cyclomatic complexity: 43 Second operand 10 states. [2020-11-30 01:02:10,041 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 210 states and 248 transitions. cyclomatic complexity: 43. Second operand 10 states. Result 608 states and 688 transitions. Complement of second has 40 states. [2020-11-30 01:02:10,043 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 01:02:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:02:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 54 transitions. [2020-11-30 01:02:10,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 46 letters. Loop has 14 letters. [2020-11-30 01:02:10,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:10,044 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:10,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:02:10,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:10,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:10,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:10,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:02:10,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:10,374 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 01:02:10,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2020-11-30 01:02:10,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 210 states and 248 transitions. cyclomatic complexity: 43 Second operand 10 states. [2020-11-30 01:02:10,750 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 210 states and 248 transitions. cyclomatic complexity: 43. Second operand 10 states. Result 260 states and 302 transitions. Complement of second has 26 states. [2020-11-30 01:02:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2020-11-30 01:02:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:02:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 31 transitions. [2020-11-30 01:02:10,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 31 transitions. Stem has 46 letters. Loop has 14 letters. [2020-11-30 01:02:10,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:10,753 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:10,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:02:10,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:10,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:10,894 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:10,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:02:10,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:11,074 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 01:02:11,075 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 8 loop predicates [2020-11-30 01:02:11,075 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 210 states and 248 transitions. cyclomatic complexity: 43 Second operand 10 states. [2020-11-30 01:02:11,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 210 states and 248 transitions. cyclomatic complexity: 43. Second operand 10 states. Result 1187 states and 1346 transitions. Complement of second has 102 states. [2020-11-30 01:02:11,621 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 01:02:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:02:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2020-11-30 01:02:11,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 14 letters. [2020-11-30 01:02:11,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:11,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 60 letters. Loop has 14 letters. [2020-11-30 01:02:11,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:11,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 28 letters. [2020-11-30 01:02:11,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:11,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1187 states and 1346 transitions. [2020-11-30 01:02:11,667 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 124 [2020-11-30 01:02:11,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1187 states to 613 states and 697 transitions. [2020-11-30 01:02:11,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 287 [2020-11-30 01:02:11,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 313 [2020-11-30 01:02:11,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 613 states and 697 transitions. [2020-11-30 01:02:11,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:11,679 INFO L691 BuchiCegarLoop]: Abstraction has 613 states and 697 transitions. [2020-11-30 01:02:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states and 697 transitions. [2020-11-30 01:02:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 547. [2020-11-30 01:02:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-11-30 01:02:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 618 transitions. [2020-11-30 01:02:11,711 INFO L714 BuchiCegarLoop]: Abstraction has 547 states and 618 transitions. [2020-11-30 01:02:11,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:11,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 01:02:11,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:02:11,712 INFO L87 Difference]: Start difference. First operand 547 states and 618 transitions. Second operand 16 states. [2020-11-30 01:02:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:12,140 INFO L93 Difference]: Finished difference Result 373 states and 416 transitions. [2020-11-30 01:02:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:02:12,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 373 states and 416 transitions. [2020-11-30 01:02:12,146 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-11-30 01:02:12,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 373 states to 258 states and 292 transitions. [2020-11-30 01:02:12,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 149 [2020-11-30 01:02:12,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2020-11-30 01:02:12,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 258 states and 292 transitions. [2020-11-30 01:02:12,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:12,152 INFO L691 BuchiCegarLoop]: Abstraction has 258 states and 292 transitions. [2020-11-30 01:02:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states and 292 transitions. [2020-11-30 01:02:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2020-11-30 01:02:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-11-30 01:02:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 286 transitions. [2020-11-30 01:02:12,164 INFO L714 BuchiCegarLoop]: Abstraction has 255 states and 286 transitions. [2020-11-30 01:02:12,164 INFO L594 BuchiCegarLoop]: Abstraction has 255 states and 286 transitions. [2020-11-30 01:02:12,164 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 01:02:12,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 255 states and 286 transitions. [2020-11-30 01:02:12,167 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-11-30 01:02:12,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:12,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:12,169 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:12,169 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:12,169 INFO L794 eck$LassoCheckResult]: Stem: 10359#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); 10358#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 6; 10333#L39 call main_#t~ret11 := fibo1(main_~x~0);< 10334#fibo1ENTRY ~n := #in~n; 10462#L10 assume !(~n < 1); 10461#L12 assume !(1 == ~n); 10443#L15 call #t~ret7 := fibo2(~n - 1);< 10460#fibo2ENTRY ~n := #in~n; 10459#L20 assume !(~n < 1); 10458#L22 assume !(1 == ~n); 10454#L25 call #t~ret9 := fibo1(~n - 1);< 10457#fibo1ENTRY ~n := #in~n; 10456#L10 assume !(~n < 1); 10455#L12 assume !(1 == ~n); 10450#L15 call #t~ret7 := fibo2(~n - 1);< 10453#fibo2ENTRY ~n := #in~n; 10452#L20 assume !(~n < 1); 10451#L22 assume !(1 == ~n); 10362#L25 call #t~ret9 := fibo1(~n - 1);< 10449#fibo1ENTRY ~n := #in~n; 10448#L10 assume !(~n < 1); 10447#L12 assume !(1 == ~n); 10361#L15 call #t~ret7 := fibo2(~n - 1);< 10363#fibo2ENTRY ~n := #in~n; 10470#L20 assume !(~n < 1); 10469#L22 assume 1 == ~n;#res := 1; 10465#fibo2FINAL assume true; 10463#fibo2EXIT >#52#return; 10464#L15-1 call #t~ret8 := fibo2(~n - 2);< 10497#fibo2ENTRY ~n := #in~n; 10514#L20 assume ~n < 1;#res := 0; 10513#fibo2FINAL assume true; 10496#fibo2EXIT >#54#return; 10495#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 10493#fibo1FINAL assume true; 10490#fibo1EXIT >#48#return; 10486#L25-1 call #t~ret10 := fibo1(~n - 2);< 10487#fibo1ENTRY ~n := #in~n; 10494#L10 assume !(~n < 1); 10492#L12 assume 1 == ~n;#res := 1; 10489#fibo1FINAL assume true; 10485#fibo1EXIT >#50#return; 10483#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 10482#fibo2FINAL assume true; 10481#fibo2EXIT >#52#return; 10419#L15-1 call #t~ret8 := fibo2(~n - 2);< 10477#fibo2ENTRY ~n := #in~n; 10519#L20 assume ~n < 1;#res := 0; 10520#fibo2FINAL assume true; 10547#fibo2EXIT >#54#return; 10476#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 10478#fibo1FINAL assume true; 10472#fibo1EXIT >#48#return; 10445#L25-1 call #t~ret10 := fibo1(~n - 2);< 10350#fibo1ENTRY ~n := #in~n; 10506#L10 assume !(~n < 1); 10504#L12 assume !(1 == ~n); 10444#L15 call #t~ret7 := fibo2(~n - 1);< 10446#fibo2ENTRY [2020-11-30 01:02:12,171 INFO L796 eck$LassoCheckResult]: Loop: 10446#fibo2ENTRY ~n := #in~n; 10510#L20 assume !(~n < 1); 10508#L22 assume !(1 == ~n); 10336#L25 call #t~ret9 := fibo1(~n - 1);< 10507#fibo1ENTRY ~n := #in~n; 10505#L10 assume !(~n < 1); 10502#L12 assume !(1 == ~n); 10475#L15 call #t~ret7 := fibo2(~n - 1);< 10446#fibo2ENTRY [2020-11-30 01:02:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash -246198455, now seen corresponding path program 2 times [2020-11-30 01:02:12,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:12,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296512772] [2020-11-30 01:02:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-30 01:02:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 01:02:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-30 01:02:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 01:02:12,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296512772] [2020-11-30 01:02:12,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138282187] [2020-11-30 01:02:12,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:12,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:02:12,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:02:12,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:02:12,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 27 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-30 01:02:12,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:12,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-11-30 01:02:12,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256986390] [2020-11-30 01:02:12,601 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:02:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:12,602 INFO L82 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2020-11-30 01:02:12,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:12,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433134022] [2020-11-30 01:02:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:12,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:12,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:12,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:12,747 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:12,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:12,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:12,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:12,747 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:02:12,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:12,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:12,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:12,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration9_Loop [2020-11-30 01:02:12,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:12,748 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:12,749 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 01:02:12,756 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 01:02:12,760 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 01:02:12,764 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 01:02:12,767 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 01:02:12,771 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 01:02:12,782 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 01:02:12,785 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 01:02:12,789 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 01:02:12,792 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 01:02:12,886 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:12,886 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:12,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:12,891 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:12,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:12,895 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:12,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:12,943 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:12,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:12,947 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:12,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:12,995 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,000 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:13,000 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:13,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:13,047 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,050 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:13,051 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:13,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:13,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:13,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:13,081 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:13,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:13,108 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:02:13,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:13,168 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:02:13,170 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:13,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:13,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:13,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:13,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:02:13,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:13,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:13,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration9_Loop [2020-11-30 01:02:13,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:13,171 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:13,173 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 01:02:13,197 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 01:02:13,200 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 01:02:13,203 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 01:02:13,205 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 01:02:13,208 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 01:02:13,211 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 01:02:13,214 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 01:02:13,222 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 01:02:13,224 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 01:02:13,302 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:13,302 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:13,304 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 01:02:13,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,309 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,337 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 01:02:13,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,341 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 75 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 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,369 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 01:02:13,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,372 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 76 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 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,400 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 01:02:13,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,404 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 77 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 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,433 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 01:02:13,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,435 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:13,465 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 01:02:13,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,470 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:13,534 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 01:02:13,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,540 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:13,592 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 01:02:13,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:13,594 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:13,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:13,594 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:13,594 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:13,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:13,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:02:13,599 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:02:13,605 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:02:13,605 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:13,611 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:02:13,612 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:02:13,612 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:02:13,612 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 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:13,642 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:02:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:13,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:02:13,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:13,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:13,807 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:13,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:13,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:13,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:13,824 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:13,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:13,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:13,919 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 01:02:13,919 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 01:02:13,919 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 255 states and 286 transitions. cyclomatic complexity: 34 Second operand 7 states. [2020-11-30 01:02:14,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 255 states and 286 transitions. cyclomatic complexity: 34. Second operand 7 states. Result 273 states and 304 transitions. Complement of second has 15 states. [2020-11-30 01:02:14,132 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 01:02:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2020-11-30 01:02:14,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 58 letters. Loop has 8 letters. [2020-11-30 01:02:14,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:14,133 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:14,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:02:14,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:14,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,289 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:14,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:14,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:14,402 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 01:02:14,402 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 01:02:14,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 255 states and 286 transitions. cyclomatic complexity: 34 Second operand 7 states. [2020-11-30 01:02:14,533 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 255 states and 286 transitions. cyclomatic complexity: 34. Second operand 7 states. Result 273 states and 304 transitions. Complement of second has 15 states. [2020-11-30 01:02:14,534 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 01:02:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2020-11-30 01:02:14,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 58 letters. Loop has 8 letters. [2020-11-30 01:02:14,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:14,535 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:14,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:02:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:14,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,721 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:14,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:14,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:14,812 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 01:02:14,813 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 01:02:14,813 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 255 states and 286 transitions. cyclomatic complexity: 34 Second operand 7 states. [2020-11-30 01:02:15,070 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 255 states and 286 transitions. cyclomatic complexity: 34. Second operand 7 states. Result 393 states and 429 transitions. Complement of second has 25 states. [2020-11-30 01:02:15,073 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 01:02:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2020-11-30 01:02:15,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 58 letters. Loop has 8 letters. [2020-11-30 01:02:15,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:15,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 66 letters. Loop has 8 letters. [2020-11-30 01:02:15,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:15,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 58 letters. Loop has 16 letters. [2020-11-30 01:02:15,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:15,076 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 393 states and 429 transitions. [2020-11-30 01:02:15,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2020-11-30 01:02:15,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 393 states to 277 states and 306 transitions. [2020-11-30 01:02:15,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 151 [2020-11-30 01:02:15,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 170 [2020-11-30 01:02:15,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 277 states and 306 transitions. [2020-11-30 01:02:15,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:15,088 INFO L691 BuchiCegarLoop]: Abstraction has 277 states and 306 transitions. [2020-11-30 01:02:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states and 306 transitions. [2020-11-30 01:02:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 263. [2020-11-30 01:02:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-11-30 01:02:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 292 transitions. [2020-11-30 01:02:15,098 INFO L714 BuchiCegarLoop]: Abstraction has 263 states and 292 transitions. [2020-11-30 01:02:15,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 01:02:15,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:02:15,099 INFO L87 Difference]: Start difference. First operand 263 states and 292 transitions. Second operand 15 states. [2020-11-30 01:02:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:15,524 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2020-11-30 01:02:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:02:15,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 304 transitions. [2020-11-30 01:02:15,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2020-11-30 01:02:15,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 269 states and 301 transitions. [2020-11-30 01:02:15,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 164 [2020-11-30 01:02:15,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 164 [2020-11-30 01:02:15,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 269 states and 301 transitions. [2020-11-30 01:02:15,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:15,533 INFO L691 BuchiCegarLoop]: Abstraction has 269 states and 301 transitions. [2020-11-30 01:02:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states and 301 transitions. [2020-11-30 01:02:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 264. [2020-11-30 01:02:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-11-30 01:02:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 292 transitions. [2020-11-30 01:02:15,544 INFO L714 BuchiCegarLoop]: Abstraction has 264 states and 292 transitions. [2020-11-30 01:02:15,544 INFO L594 BuchiCegarLoop]: Abstraction has 264 states and 292 transitions. [2020-11-30 01:02:15,544 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-30 01:02:15,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 292 transitions. [2020-11-30 01:02:15,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2020-11-30 01:02:15,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:15,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:15,548 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:15,548 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:02:15,549 INFO L794 eck$LassoCheckResult]: Stem: 13105#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); 13097#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 6; 13071#L39 call main_#t~ret11 := fibo1(main_~x~0);< 13072#fibo1ENTRY ~n := #in~n; 13226#L10 assume !(~n < 1); 13224#L12 assume !(1 == ~n); 13216#L15 call #t~ret7 := fibo2(~n - 1);< 13219#fibo2ENTRY ~n := #in~n; 13218#L20 assume !(~n < 1); 13217#L22 assume !(1 == ~n); 13212#L25 call #t~ret9 := fibo1(~n - 1);< 13215#fibo1ENTRY ~n := #in~n; 13214#L10 assume !(~n < 1); 13213#L12 assume !(1 == ~n); 13041#L15 call #t~ret7 := fibo2(~n - 1);< 13207#fibo2ENTRY ~n := #in~n; 13202#L20 assume !(~n < 1); 13200#L22 assume !(1 == ~n); 13192#L25 call #t~ret9 := fibo1(~n - 1);< 13199#fibo1ENTRY ~n := #in~n; 13197#L10 assume !(~n < 1); 13195#L12 assume !(1 == ~n); 13189#L15 call #t~ret7 := fibo2(~n - 1);< 13193#fibo2ENTRY ~n := #in~n; 13198#L20 assume !(~n < 1); 13196#L22 assume 1 == ~n;#res := 1; 13194#fibo2FINAL assume true; 13188#fibo2EXIT >#52#return; 13190#L15-1 call #t~ret8 := fibo2(~n - 2);< 13278#fibo2ENTRY ~n := #in~n; 13280#L20 assume ~n < 1;#res := 0; 13279#fibo2FINAL assume true; 13277#fibo2EXIT >#54#return; 13275#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret8;havoc #t~ret7; 13273#fibo1FINAL assume true; 13272#fibo1EXIT >#48#return; 13089#L25-1 call #t~ret10 := fibo1(~n - 2);< 13090#fibo1ENTRY ~n := #in~n; 13284#L10 assume !(~n < 1); 13283#L12 assume 1 == ~n;#res := 1; 13271#fibo1FINAL assume true; 13269#fibo1EXIT >#50#return; 13040#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 13042#fibo2FINAL assume true; 13255#fibo2EXIT >#52#return; 13084#L15-1 call #t~ret8 := fibo2(~n - 2);< 13156#fibo2ENTRY ~n := #in~n; 13158#L20 assume !(~n < 1); 13152#L22 assume !(1 == ~n); 13144#L25 call #t~ret9 := fibo1(~n - 1);< 13151#fibo1ENTRY ~n := #in~n; 13150#L10 assume !(~n < 1); 13143#L12 assume !(1 == ~n); 13064#L15 call #t~ret7 := fibo2(~n - 1);< 13185#fibo2ENTRY ~n := #in~n; 13187#L20 assume !(~n < 1); 13062#L22 assume !(1 == ~n); 13065#L25 call #t~ret9 := fibo1(~n - 1);< 13182#fibo1ENTRY ~n := #in~n; 13180#L10 assume !(~n < 1); 13178#L12 assume !(1 == ~n); 13175#L15 [2020-11-30 01:02:15,549 INFO L796 eck$LassoCheckResult]: Loop: 13175#L15 call #t~ret7 := fibo2(~n - 1);< 13176#fibo2ENTRY ~n := #in~n; 13183#L20 assume !(~n < 1); 13184#L22 assume !(1 == ~n); 13172#L25 call #t~ret9 := fibo1(~n - 1);< 13182#fibo1ENTRY ~n := #in~n; 13180#L10 assume !(~n < 1); 13178#L12 assume !(1 == ~n); 13175#L15 [2020-11-30 01:02:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:15,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1632318521, now seen corresponding path program 3 times [2020-11-30 01:02:15,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:15,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793600356] [2020-11-30 01:02:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-30 01:02:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-30 01:02:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:15,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-30 01:02:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-30 01:02:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 01:02:15,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793600356] [2020-11-30 01:02:15,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899128174] [2020-11-30 01:02:15,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/bin/uautomizer/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:02:15,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-30 01:02:15,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:02:15,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:02:15,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 01:02:15,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:02:15,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 18 [2020-11-30 01:02:15,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325404763] [2020-11-30 01:02:15,905 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 01:02:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2020-11-30 01:02:15,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:15,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528989795] [2020-11-30 01:02:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:15,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:15,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:15,916 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:16,056 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-30 01:02:16,248 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:16,248 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:16,248 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:16,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:16,248 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:02:16,248 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:16,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:16,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:16,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration10_Loop [2020-11-30 01:02:16,249 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:16,249 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:16,250 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 01:02:16,267 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 01:02:16,270 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 01:02:16,273 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 01:02:16,275 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 01:02:16,278 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 01:02:16,280 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 01:02:16,285 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 01:02:16,289 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 01:02:16,377 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:16,377 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:16,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:16,380 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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 01:02:16,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:02:16,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:19,067 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:02:19,069 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:19,069 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:19,069 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:19,069 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:19,069 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:02:19,069 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:19,069 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:19,069 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:19,069 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration10_Loop [2020-11-30 01:02:19,070 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:19,070 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:19,070 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 01:02:19,082 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 01:02:19,084 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 01:02:19,087 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 01:02:19,090 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 01:02:19,092 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 01:02:19,103 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 01:02:19,105 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 01:02:19,108 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 01:02:19,265 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:19,266 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:19,271 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 01:02:19,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:19,273 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:19,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:19,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:19,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:19,275 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:19,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:19,279 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:02:19,283 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:02:19,284 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_9cceb0c5-ed9a-41e6-bb8b-5a9df776f96b/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) [2020-11-30 01:02:19,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:02:19,289 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:02:19,289 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:02:19,289 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:19,327 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:02:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:19,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:02:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:19,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:19,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:19,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:19,611 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 01:02:19,612 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2020-11-30 01:02:19,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 292 transitions. cyclomatic complexity: 31 Second operand 8 states. [2020-11-30 01:02:19,788 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 292 transitions. cyclomatic complexity: 31. Second operand 8 states. Result 288 states and 316 transitions. Complement of second has 19 states. [2020-11-30 01:02:19,789 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 01:02:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:02:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2020-11-30 01:02:19,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 61 letters. Loop has 8 letters. [2020-11-30 01:02:19,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:19,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:19,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:02:19,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:19,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,984 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:19,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:20,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:20,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:20,139 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 01:02:20,140 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2020-11-30 01:02:20,140 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 292 transitions. cyclomatic complexity: 31 Second operand 8 states. [2020-11-30 01:02:20,346 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 292 transitions. cyclomatic complexity: 31. Second operand 8 states. Result 288 states and 316 transitions. Complement of second has 21 states. [2020-11-30 01:02:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2020-11-30 01:02:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:02:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2020-11-30 01:02:20,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 61 letters. Loop has 8 letters. [2020-11-30 01:02:20,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:20,348 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:02:20,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:20,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:02:20,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:20,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:20,515 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:20,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:20,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:02:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:20,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:02:20,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:20,635 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 01:02:20,636 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 6 loop predicates [2020-11-30 01:02:20,636 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 292 transitions. cyclomatic complexity: 31 Second operand 8 states. [2020-11-30 01:02:20,836 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 292 transitions. cyclomatic complexity: 31. Second operand 8 states. Result 606 states and 695 transitions. Complement of second has 33 states. [2020-11-30 01:02:20,837 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 01:02:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:02:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2020-11-30 01:02:20,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 8 letters. [2020-11-30 01:02:20,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:20,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2020-11-30 01:02:20,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:20,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 16 letters. [2020-11-30 01:02:20,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:20,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 606 states and 695 transitions. [2020-11-30 01:02:20,849 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:02:20,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 606 states to 0 states and 0 transitions. [2020-11-30 01:02:20,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:02:20,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:02:20,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:02:20,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:02:20,851 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:02:20,851 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:02:20,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:20,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 01:02:20,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:02:20,852 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 18 states. [2020-11-30 01:02:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:20,853 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 01:02:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:02:20,854 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 01:02:20,854 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:02:20,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:02:20,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:02:20,855 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:02:20,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:02:20,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:02:20,855 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:02:20,855 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:02:20,855 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:02:20,855 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-30 01:02:20,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:02:20,856 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:02:20,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:02:20,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:02:20 BoogieIcfgContainer [2020-11-30 01:02:20,863 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:02:20,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:02:20,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:02:20,864 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:02:20,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:51" (3/4) ... [2020-11-30 01:02:20,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:02:20,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:02:20,869 INFO L168 Benchmark]: Toolchain (without parser) took 30531.84 ms. Allocated memory was 88.1 MB in the beginning and 226.5 MB in the end (delta: 138.4 MB). Free memory was 55.6 MB in the beginning and 87.9 MB in the end (delta: -32.2 MB). Peak memory consumption was 106.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:20,870 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.2 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:20,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.05 ms. Allocated memory is still 88.1 MB. Free memory was 55.6 MB in the beginning and 65.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:20,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.43 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:20,871 INFO L168 Benchmark]: Boogie Preprocessor took 59.28 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 63.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:20,871 INFO L168 Benchmark]: RCFGBuilder took 527.77 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 50.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:20,872 INFO L168 Benchmark]: BuchiAutomizer took 29584.43 ms. Allocated memory was 88.1 MB in the beginning and 226.5 MB in the end (delta: 138.4 MB). Free memory was 50.8 MB in the beginning and 87.9 MB in the end (delta: -37.0 MB). Peak memory consumption was 103.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:20,872 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 226.5 MB. Free memory is still 87.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:20,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.2 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.05 ms. Allocated memory is still 88.1 MB. Free memory was 55.6 MB in the beginning and 65.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.43 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.28 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 63.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 527.77 ms. Allocated memory is still 88.1 MB. Free memory was 63.0 MB in the beginning and 50.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 29584.43 ms. Allocated memory was 88.1 MB in the beginning and 226.5 MB in the end (delta: 138.4 MB). Free memory was 50.8 MB in the beginning and 87.9 MB in the end (delta: -37.0 MB). Peak memory consumption was 103.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 226.5 MB. Free memory is still 87.9 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 15 terminating modules (9 trivial, 2 deterministic, 4 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 nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic 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 n and consists of 8 locations. 9 modules have a trivial ranking function, the largest among these consists of 19 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 29.5s and 11 iterations. TraceHistogramMax:8. Analysis of lassos took 16.4s. Construction of modules took 3.3s. Büchi inclusion checks took 8.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 13. Automata minimization 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 191 StatesRemovedByMinimization, 13 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 264 states and ocurred in iteration 9. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 437 SDtfs, 1089 SDslu, 1194 SDs, 0 SdLazy, 2786 SolverSat, 572 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI4 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf79 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf93 smp75 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...