./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 61245002f662171c4f63dbacefaa0e216ea9fe3a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 20:07:41,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:07:41,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:07:41,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:07:41,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:07:41,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:07:41,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:07:41,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:07:41,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:07:41,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:07:41,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:07:41,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:07:41,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:07:41,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:07:41,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:07:41,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:07:41,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:07:41,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:07:41,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:07:41,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:07:41,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:07:41,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:07:41,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:07:41,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:07:41,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:07:41,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:07:41,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:07:41,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:07:41,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:07:41,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:07:41,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:07:41,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:07:41,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:07:41,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:07:41,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:07:41,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:07:41,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:07:41,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:07:41,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:07:41,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:07:41,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:07:41,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:07:41,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:07:41,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:07:41,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:07:41,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:07:41,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:07:41,988 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:07:41,988 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:07:41,989 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:07:41,989 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:07:41,989 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:07:41,989 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:07:41,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:07:41,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:07:41,990 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:07:41,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:07:41,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:07:41,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:07:41,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:07:41,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:07:41,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:07:41,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:07:41,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:07:41,992 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:07:41,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:07:41,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:07:41,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:07:41,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:07:41,993 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:07:41,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:07:41,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:07:41,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:07:41,994 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:07:41,995 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:07:41,995 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61245002f662171c4f63dbacefaa0e216ea9fe3a [2020-10-19 20:07:42,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:07:42,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:07:42,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:07:42,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:07:42,367 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:07:42,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-10-19 20:07:42,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66d0c4d7/84d6206e1e6d439ca6c3794c29459dc9/FLAG56ff13cb8 [2020-10-19 20:07:42,878 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:07:42,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2020-10-19 20:07:42,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66d0c4d7/84d6206e1e6d439ca6c3794c29459dc9/FLAG56ff13cb8 [2020-10-19 20:07:43,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66d0c4d7/84d6206e1e6d439ca6c3794c29459dc9 [2020-10-19 20:07:43,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:07:43,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:07:43,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:07:43,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:07:43,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:07:43,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fb8ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43, skipping insertion in model container [2020-10-19 20:07:43,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:07:43,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:07:43,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:07:43,572 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:07:43,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:07:43,602 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:07:43,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43 WrapperNode [2020-10-19 20:07:43,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:07:43,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:07:43,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:07:43,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:07:43,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:07:43,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:07:43,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:07:43,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:07:43,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:07:43,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:07:43,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:07:43,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:07:43,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 20:07:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-19 20:07:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-19 20:07:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:07:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-19 20:07:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-19 20:07:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:07:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:07:43,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:07:43,978 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 20:07:43,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:07:43 BoogieIcfgContainer [2020-10-19 20:07:43,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:07:43,981 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:07:43,981 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:07:43,985 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:07:43,986 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:07:43,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:07:43" (1/3) ... [2020-10-19 20:07:43,988 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f1cf7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:07:43, skipping insertion in model container [2020-10-19 20:07:43,989 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:07:43,989 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (2/3) ... [2020-10-19 20:07:43,989 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f1cf7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:07:43, skipping insertion in model container [2020-10-19 20:07:43,989 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:07:43,990 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:07:43" (3/3) ... [2020-10-19 20:07:43,992 INFO L373 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-10-19 20:07:44,049 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:07:44,049 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:07:44,050 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:07:44,050 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:07:44,050 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:07:44,051 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:07:44,051 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:07:44,051 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:07:44,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-10-19 20:07:44,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:44,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:44,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:44,113 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:07:44,114 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:44,114 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:07:44,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-10-19 20:07:44,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:44,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:44,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:44,119 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:07:44,120 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:44,131 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 22#L39true call main_#t~ret11 := fibo1(main_~x~0);< 27#fibo1ENTRYtrue [2020-10-19 20:07:44,132 INFO L796 eck$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 [2020-10-19 20:07:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:44,139 INFO L82 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2020-10-19 20:07:44,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:44,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218554851] [2020-10-19 20:07:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:44,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2020-10-19 20:07:44,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:44,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102567011] [2020-10-19 20:07:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,315 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2020-10-19 20:07:44,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:44,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944177918] [2020-10-19 20:07:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,369 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:44,592 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:44,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:44,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:44,594 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:44,595 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:44,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:44,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:44,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:44,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2020-10-19 20:07:44,597 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:44,597 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:44,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,821 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:44,823 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:44,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:44,834 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 [2020-10-19 20:07:44,844 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:44,845 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:44,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:44,889 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:44,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:44,896 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:44,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:44,952 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:44,958 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:44,958 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,006 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,012 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,012 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,058 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,063 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,108 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,114 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,114 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:45,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,158 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,196 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,200 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,200 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,245 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:45,293 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 [2020-10-19 20:07:45,378 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:45,381 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:45,381 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:45,381 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:45,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:45,382 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:45,382 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,382 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:45,382 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:45,382 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2020-10-19 20:07:45,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:45,383 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:45,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,501 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:45,507 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,521 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 [2020-10-19 20:07:45,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,528 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 [2020-10-19 20:07:45,531 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,567 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 [2020-10-19 20:07:45,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,609 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 [2020-10-19 20:07:45,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,615 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,639 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 [2020-10-19 20:07:45,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,646 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,672 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 [2020-10-19 20:07:45,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,690 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,728 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,749 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 [2020-10-19 20:07:45,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,759 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,783 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 [2020-10-19 20:07:45,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,792 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,795 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,831 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,837 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,840 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:45,844 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 20:07:45,844 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:45,856 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:45,857 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:45,857 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:45,858 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-10-19 20:07:45,884 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:45,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:07:45,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:45,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:45,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:46,074 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 [2020-10-19 20:07:46,075 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 6 states. [2020-10-19 20:07:46,286 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. [2020-10-19 20:07:46,286 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 [2020-10-19 20:07:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 20:07:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-10-19 20:07:46,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2020-10-19 20:07:46,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:46,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-19 20:07:46,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:46,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2020-10-19 20:07:46,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:46,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2020-10-19 20:07:46,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2020-10-19 20:07:46,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-10-19 20:07:46,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-10-19 20:07:46,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2020-10-19 20:07:46,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:46,318 INFO L691 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-10-19 20:07:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2020-10-19 20:07:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-10-19 20:07:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 20:07:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2020-10-19 20:07:46,356 INFO L714 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-10-19 20:07:46,356 INFO L594 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-10-19 20:07:46,356 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:07:46,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2020-10-19 20:07:46,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:46,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:46,360 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,360 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,361 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 230#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 216#L39 call main_#t~ret11 := fibo1(main_~x~0);< 222#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 217#L12 assume !(1 == ~n); 201#L15 call #t~ret7 := fibo2(~n - 1);< 233#fibo2ENTRY ~n := #in~n; 237#L20 assume !(~n < 1); 251#L22 assume !(1 == ~n); 212#L25 call #t~ret9 := fibo1(~n - 1);< 227#fibo1ENTRY ~n := #in~n; 211#L10 assume ~n < 1;#res := 0; 213#fibo1FINAL assume true; 220#fibo1EXIT >#48#return; 221#L25-1 [2020-10-19 20:07:46,361 INFO L796 eck$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 [2020-10-19 20:07:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2020-10-19 20:07:46,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344613633] [2020-10-19 20:07:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:46,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344613633] [2020-10-19 20:07:46,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:07:46,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:07:46,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905971616] [2020-10-19 20:07:46,464 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2020-10-19 20:07:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524062916] [2020-10-19 20:07:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:46,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524062916] [2020-10-19 20:07:46,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:07:46,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:07:46,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961405661] [2020-10-19 20:07:46,513 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:07:46,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:46,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 20:07:46,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 20:07:46,519 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand 6 states. [2020-10-19 20:07:46,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:46,598 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2020-10-19 20:07:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 20:07:46,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2020-10-19 20:07:46,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2020-10-19 20:07:46,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2020-10-19 20:07:46,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-10-19 20:07:46,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2020-10-19 20:07:46,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:46,607 INFO L691 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-10-19 20:07:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2020-10-19 20:07:46,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-10-19 20:07:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 20:07:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-10-19 20:07:46,616 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-10-19 20:07:46,616 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-10-19 20:07:46,617 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 20:07:46,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2020-10-19 20:07:46,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:46,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:46,620 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,620 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,620 INFO L794 eck$LassoCheckResult]: Stem: 375#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 374#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 355#L39 call main_#t~ret11 := fibo1(main_~x~0);< 364#fibo1ENTRY ~n := #in~n; 354#L10 assume !(~n < 1); 356#L12 assume !(1 == ~n); 346#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 399#L20 assume !(~n < 1); 400#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := fibo1(~n - 1);< 371#fibo1ENTRY ~n := #in~n; 351#L10 assume !(~n < 1); 353#L12 assume 1 == ~n;#res := 1; 372#fibo1FINAL assume true; 365#fibo1EXIT >#48#return; 366#L25-1 [2020-10-19 20:07:46,621 INFO L796 eck$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 [2020-10-19 20:07:46,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,621 INFO L82 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2020-10-19 20:07:46,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918174948] [2020-10-19 20:07:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:46,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918174948] [2020-10-19 20:07:46,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8789366] [2020-10-19 20:07:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:46,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:46,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:46,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-19 20:07:46,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165822974] [2020-10-19 20:07:46,789 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2020-10-19 20:07:46,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960222951] [2020-10-19 20:07:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:46,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:46,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:46,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:47,019 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:47,020 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:47,020 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:47,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:47,020 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:47,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:47,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:47,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2020-10-19 20:07:47,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:47,021 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:47,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:47,106 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,110 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 [2020-10-19 20:07:47,113 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,113 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,156 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 [2020-10-19 20:07:47,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,159 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,193 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 [2020-10-19 20:07:47,196 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,196 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,235 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 [2020-10-19 20:07:47,238 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,238 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,276 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:47,315 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 [2020-10-19 20:07:47,879 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:47,881 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:47,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:47,881 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:47,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:47,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:47,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,882 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:47,882 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:47,882 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2020-10-19 20:07:47,882 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:47,882 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:47,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,958 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:47,958 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,972 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 [2020-10-19 20:07:47,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:47,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:47,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:47,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:47,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:47,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:47,975 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 [2020-10-19 20:07:47,979 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,003 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 [2020-10-19 20:07:48,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:48,010 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,034 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 [2020-10-19 20:07:48,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:48,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:48,061 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 [2020-10-19 20:07:48,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:48,069 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:48,074 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:48,074 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:48,080 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:48,080 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:48,080 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:48,080 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2020-10-19 20:07:48,099 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:48,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:48,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:48,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 20:07:48,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:48,374 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 [2020-10-19 20:07:48,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand 10 states. [2020-10-19 20:07:48,838 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. [2020-10-19 20:07:48,839 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 [2020-10-19 20:07:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 20:07:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2020-10-19 20:07:48,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2020-10-19 20:07:48,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:48,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2020-10-19 20:07:48,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:48,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2020-10-19 20:07:48,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:48,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2020-10-19 20:07:48,851 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:48,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2020-10-19 20:07:48,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2020-10-19 20:07:48,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2020-10-19 20:07:48,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2020-10-19 20:07:48,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:48,860 INFO L691 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2020-10-19 20:07:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2020-10-19 20:07:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-19 20:07:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-19 20:07:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2020-10-19 20:07:48,883 INFO L714 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2020-10-19 20:07:48,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:48,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 20:07:48,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 20:07:48,884 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand 10 states. [2020-10-19 20:07:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:49,082 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2020-10-19 20:07:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 20:07:49,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2020-10-19 20:07:49,093 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:49,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2020-10-19 20:07:49,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2020-10-19 20:07:49,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2020-10-19 20:07:49,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2020-10-19 20:07:49,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:49,103 INFO L691 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2020-10-19 20:07:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2020-10-19 20:07:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2020-10-19 20:07:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-19 20:07:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-10-19 20:07:49,130 INFO L714 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-10-19 20:07:49,130 INFO L594 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-10-19 20:07:49,130 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 20:07:49,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2020-10-19 20:07:49,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:49,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:49,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:49,142 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] [2020-10-19 20:07:49,142 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] [2020-10-19 20:07:49,142 INFO L794 eck$LassoCheckResult]: Stem: 1219#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1214#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 1192#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1193#fibo1ENTRY ~n := #in~n; 1257#L10 assume !(~n < 1); 1206#L12 assume !(1 == ~n); 1159#L15 call #t~ret7 := fibo2(~n - 1);< 1216#fibo2ENTRY ~n := #in~n; 1221#L20 assume !(~n < 1); 1175#L22 assume !(1 == ~n); 1176#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1184#L12 assume !(1 == ~n); 1203#L15 call #t~ret7 := fibo2(~n - 1);< 1259#fibo2ENTRY ~n := #in~n; 1261#L20 assume !(~n < 1); 1262#L22 assume !(1 == ~n); 1183#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1184#L12 assume !(1 == ~n); 1203#L15 call #t~ret7 := fibo2(~n - 1);< 1259#fibo2ENTRY ~n := #in~n; 1261#L20 assume ~n < 1;#res := 0; 1260#fibo2FINAL assume true; 1258#fibo2EXIT >#52#return; 1204#L15-1 call #t~ret8 := fibo2(~n - 2);< 1223#fibo2ENTRY ~n := #in~n; 1317#L20 assume !(~n < 1); 1316#L22 assume !(1 == ~n); 1183#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1256#L10 assume !(~n < 1); 1263#L12 assume 1 == ~n;#res := 1; 1264#fibo1FINAL assume true; 1251#fibo1EXIT >#48#return; 1208#L25-1 call #t~ret10 := fibo1(~n - 2);< 1213#fibo1ENTRY ~n := #in~n; 1249#L10 assume !(~n < 1); 1247#L12 assume !(1 == ~n); 1212#L15 call #t~ret7 := fibo2(~n - 1);< 1246#fibo2ENTRY ~n := #in~n; 1243#L20 assume ~n < 1;#res := 0; 1244#fibo2FINAL assume true; 1248#fibo2EXIT >#52#return; 1211#L15-1 call #t~ret8 := fibo2(~n - 2);< 1246#fibo2ENTRY ~n := #in~n; 1243#L20 assume !(~n < 1); 1239#L22 assume 1 == ~n;#res := 1; 1240#fibo2FINAL assume true; 1308#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#48#return; 1186#L25-1 call #t~ret10 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#52#return; 1172#L15-1 [2020-10-19 20:07:49,143 INFO L796 eck$LassoCheckResult]: Loop: 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume !(~n < 1); 1169#L22 assume !(1 == ~n); 1174#L25 call #t~ret9 := fibo1(~n - 1);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume !(~n < 1); 1169#L22 assume !(1 == ~n); 1174#L25 call #t~ret9 := fibo1(~n - 1);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#48#return; 1186#L25-1 call #t~ret10 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#52#return; 1172#L15-1 [2020-10-19 20:07:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2020-10-19 20:07:49,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:49,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218936448] [2020-10-19 20:07:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 20:07:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-19 20:07:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-19 20:07:49,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218936448] [2020-10-19 20:07:49,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12939491] [2020-10-19 20:07:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 20:07:49,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-19 20:07:49,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:49,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 19 [2020-10-19 20:07:49,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302989109] [2020-10-19 20:07:49,695 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1411437133, now seen corresponding path program 1 times [2020-10-19 20:07:49,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:49,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596545638] [2020-10-19 20:07:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-19 20:07:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-19 20:07:49,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596545638] [2020-10-19 20:07:49,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931108122] [2020-10-19 20:07:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:49,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-19 20:07:49,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:49,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2020-10-19 20:07:49,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474509881] [2020-10-19 20:07:49,924 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:07:49,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:49,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 20:07:49,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-19 20:07:49,927 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand 12 states. [2020-10-19 20:07:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:50,286 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2020-10-19 20:07:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 20:07:50,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2020-10-19 20:07:50,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:50,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2020-10-19 20:07:50,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2020-10-19 20:07:50,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2020-10-19 20:07:50,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2020-10-19 20:07:50,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:50,298 INFO L691 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2020-10-19 20:07:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2020-10-19 20:07:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2020-10-19 20:07:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 20:07:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2020-10-19 20:07:50,317 INFO L714 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-10-19 20:07:50,317 INFO L594 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-10-19 20:07:50,317 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 20:07:50,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2020-10-19 20:07:50,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:50,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:50,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:50,321 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] [2020-10-19 20:07:50,321 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:50,321 INFO L794 eck$LassoCheckResult]: Stem: 2331#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2321#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2303#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2304#fibo1ENTRY ~n := #in~n; 2366#L10 assume !(~n < 1); 2320#L12 assume !(1 == ~n); 2284#L15 call #t~ret7 := fibo2(~n - 1);< 2324#fibo2ENTRY ~n := #in~n; 2415#L20 assume !(~n < 1); 2283#L22 assume !(1 == ~n); 2285#L25 call #t~ret9 := fibo1(~n - 1);< 2313#fibo1ENTRY ~n := #in~n; 2352#L10 assume !(~n < 1); 2350#L12 assume !(1 == ~n); 2267#L15 call #t~ret7 := fibo2(~n - 1);< 2346#fibo2ENTRY ~n := #in~n; 2369#L20 assume !(~n < 1); 2368#L22 assume !(1 == ~n); 2338#L25 call #t~ret9 := fibo1(~n - 1);< 2313#fibo1ENTRY ~n := #in~n; 2355#L10 assume !(~n < 1); 2379#L12 assume 1 == ~n;#res := 1; 2380#fibo1FINAL assume true; 2446#fibo1EXIT >#48#return; 2293#L25-1 call #t~ret10 := fibo1(~n - 2);< 2316#fibo1ENTRY ~n := #in~n; 2292#L10 assume ~n < 1;#res := 0; 2294#fibo1FINAL assume true; 2449#fibo1EXIT >#50#return; 2266#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2269#fibo2FINAL assume true; 2389#fibo2EXIT >#52#return; 2288#L15-1 [2020-10-19 20:07:50,321 INFO L796 eck$LassoCheckResult]: Loop: 2288#L15-1 call #t~ret8 := fibo2(~n - 2);< 2337#fibo2ENTRY ~n := #in~n; 2416#L20 assume !(~n < 1); 2417#L22 assume !(1 == ~n); 2396#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2410#L10 assume !(~n < 1); 2408#L12 assume !(1 == ~n); 2289#L15 call #t~ret7 := fibo2(~n - 1);< 2337#fibo2ENTRY ~n := #in~n; 2416#L20 assume !(~n < 1); 2417#L22 assume 1 == ~n;#res := 1; 2286#fibo2FINAL assume true; 2290#fibo2EXIT >#52#return; 2288#L15-1 [2020-10-19 20:07:50,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:50,322 INFO L82 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2020-10-19 20:07:50,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:50,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548003265] [2020-10-19 20:07:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:50,346 INFO L82 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2020-10-19 20:07:50,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:50,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559664594] [2020-10-19 20:07:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,355 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1977386679, now seen corresponding path program 1 times [2020-10-19 20:07:50,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:50,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235611387] [2020-10-19 20:07:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 20:07:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-19 20:07:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-19 20:07:50,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235611387] [2020-10-19 20:07:50,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446247289] [2020-10-19 20:07:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:50,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 20:07:50,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:50,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2020-10-19 20:07:50,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118195821] [2020-10-19 20:07:50,723 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:50,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:50,724 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:50,724 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:50,724 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:50,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:50,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:50,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration5_Loop [2020-10-19 20:07:50,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:50,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:50,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,813 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:50,814 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,823 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,848 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=1} Honda state: {fibo1_#t~ret7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,899 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,899 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,922 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,925 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,947 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:50,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:51,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:51,578 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:51,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:51,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:51,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:51,579 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:51,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:51,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:51,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration5_Loop [2020-10-19 20:07:51,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:51,579 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:51,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,651 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:51,651 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,657 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 [2020-10-19 20:07:51,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,660 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:51,680 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 [2020-10-19 20:07:51,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,683 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 [2020-10-19 20:07:51,684 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,705 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 [2020-10-19 20:07:51,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,715 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,761 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 [2020-10-19 20:07:51,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,764 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:51,785 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 [2020-10-19 20:07:51,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,794 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:51,822 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 [2020-10-19 20:07:51,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,826 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:51,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,871 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:51,875 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:51,875 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:51,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:51,878 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:51,878 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:51,878 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2020-10-19 20:07:51,897 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:51,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 20:07:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:51,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:51,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:51,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 20:07:51,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:52,081 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 [2020-10-19 20:07:52,081 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand 10 states. [2020-10-19 20:07:52,520 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 184 states and 238 transitions. cyclomatic complexity: 59. Second operand 10 states. Result 717 states and 936 transitions. Complement of second has 40 states. [2020-10-19 20:07:52,522 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 [2020-10-19 20:07:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 20:07:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 69 transitions. [2020-10-19 20:07:52,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 32 letters. Loop has 14 letters. [2020-10-19 20:07:52,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:52,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 46 letters. Loop has 14 letters. [2020-10-19 20:07:52,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:52,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 32 letters. Loop has 28 letters. [2020-10-19 20:07:52,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:52,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 717 states and 936 transitions. [2020-10-19 20:07:52,548 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 40 [2020-10-19 20:07:52,566 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 717 states to 646 states and 859 transitions. [2020-10-19 20:07:52,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2020-10-19 20:07:52,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2020-10-19 20:07:52,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 646 states and 859 transitions. [2020-10-19 20:07:52,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:52,572 INFO L691 BuchiCegarLoop]: Abstraction has 646 states and 859 transitions. [2020-10-19 20:07:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states and 859 transitions. [2020-10-19 20:07:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 625. [2020-10-19 20:07:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-19 20:07:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 829 transitions. [2020-10-19 20:07:52,621 INFO L714 BuchiCegarLoop]: Abstraction has 625 states and 829 transitions. [2020-10-19 20:07:52,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 20:07:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-19 20:07:52,623 INFO L87 Difference]: Start difference. First operand 625 states and 829 transitions. Second operand 14 states. [2020-10-19 20:07:52,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:52,861 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-10-19 20:07:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 20:07:52,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 234 states and 284 transitions. [2020-10-19 20:07:52,867 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-10-19 20:07:52,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 234 states to 219 states and 269 transitions. [2020-10-19 20:07:52,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2020-10-19 20:07:52,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2020-10-19 20:07:52,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 269 transitions. [2020-10-19 20:07:52,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:52,875 INFO L691 BuchiCegarLoop]: Abstraction has 219 states and 269 transitions. [2020-10-19 20:07:52,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 269 transitions. [2020-10-19 20:07:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 199. [2020-10-19 20:07:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-19 20:07:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-10-19 20:07:52,884 INFO L714 BuchiCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-10-19 20:07:52,884 INFO L594 BuchiCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-10-19 20:07:52,884 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 20:07:52,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 245 transitions. [2020-10-19 20:07:52,886 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-10-19 20:07:52,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:52,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:52,892 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:52,892 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:52,893 INFO L794 eck$LassoCheckResult]: Stem: 4497#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4496#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4466#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4467#fibo1ENTRY ~n := #in~n; 4550#L10 assume !(~n < 1); 4488#L12 assume !(1 == ~n); 4483#L15 call #t~ret7 := fibo2(~n - 1);< 4567#fibo2ENTRY ~n := #in~n; 4512#L20 assume !(~n < 1); 4513#L22 assume !(1 == ~n); 4454#L25 call #t~ret9 := fibo1(~n - 1);< 4484#fibo1ENTRY ~n := #in~n; 4499#L10 assume !(~n < 1); 4556#L12 assume !(1 == ~n); 4547#L15 call #t~ret7 := fibo2(~n - 1);< 4548#fibo2ENTRY ~n := #in~n; 4555#L20 assume !(~n < 1); 4554#L22 assume 1 == ~n;#res := 1; 4553#fibo2FINAL assume true; 4546#fibo2EXIT >#52#return; 4544#L15-1 call #t~ret8 := fibo2(~n - 2);< 4545#fibo2ENTRY ~n := #in~n; 4551#L20 assume ~n < 1;#res := 0; 4549#fibo2FINAL assume true; 4543#fibo2EXIT >#54#return; 4542#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4541#fibo1FINAL assume true; 4538#fibo1EXIT >#48#return; 4526#L25-1 call #t~ret10 := fibo1(~n - 2);< 4495#fibo1ENTRY ~n := #in~n; 4531#L10 assume !(~n < 1); 4529#L12 assume !(1 == ~n); 4494#L15 call #t~ret7 := fibo2(~n - 1);< 4522#fibo2ENTRY ~n := #in~n; 4520#L20 assume !(~n < 1); 4518#L22 assume !(1 == ~n); 4476#L25 call #t~ret9 := fibo1(~n - 1);< 4613#fibo1ENTRY ~n := #in~n; 4635#L10 assume !(~n < 1); 4558#L12 assume !(1 == ~n); 4442#L15 call #t~ret7 := fibo2(~n - 1);< 4500#fibo2ENTRY [2020-10-19 20:07:52,893 INFO L796 eck$LassoCheckResult]: Loop: 4500#fibo2ENTRY ~n := #in~n; 4598#L20 assume !(~n < 1); 4560#L22 assume !(1 == ~n); 4469#L25 call #t~ret9 := fibo1(~n - 1);< 4482#fibo1ENTRY ~n := #in~n; 4638#L10 assume !(~n < 1); 4633#L12 assume !(1 == ~n); 4443#L15 call #t~ret7 := fibo2(~n - 1);< 4500#fibo2ENTRY [2020-10-19 20:07:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:52,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1779459932, now seen corresponding path program 1 times [2020-10-19 20:07:52,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:52,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513616787] [2020-10-19 20:07:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 20:07:52,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513616787] [2020-10-19 20:07:52,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755104364] [2020-10-19 20:07:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:53,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:07:53,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 20:07:53,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:53,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-19 20:07:53,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106199736] [2020-10-19 20:07:53,073 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2020-10-19 20:07:53,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:53,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061110211] [2020-10-19 20:07:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:53,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:53,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:53,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:53,161 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:53,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:53,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:53,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:53,162 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:53,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:53,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:53,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2020-10-19 20:07:53,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:53,162 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:53,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,238 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:53,238 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,245 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,269 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,295 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,321 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,345 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,373 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,398 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,424 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,425 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:53,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,447 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:53,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,527 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:53,529 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:53,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:53,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:53,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:53,529 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:53,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:53,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:53,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2020-10-19 20:07:53,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:53,530 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:53,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,605 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:53,605 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,612 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 [2020-10-19 20:07:53,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,619 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,678 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 [2020-10-19 20:07:53,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,710 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 [2020-10-19 20:07:53,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,738 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 [2020-10-19 20:07:53,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,739 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,740 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,747 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,776 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 [2020-10-19 20:07:53,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:53,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,808 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,830 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 [2020-10-19 20:07:53,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,855 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 [2020-10-19 20:07:53,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,857 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,882 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 [2020-10-19 20:07:53,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,885 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,911 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 [2020-10-19 20:07:53,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,915 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:53,917 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 20:07:53,917 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:53,919 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:53,919 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:53,919 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:53,919 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2020-10-19 20:07:53,939 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,026 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:54,098 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 [2020-10-19 20:07:54,098 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-10-19 20:07:54,246 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 223 states and 270 transitions. Complement of second has 21 states. [2020-10-19 20:07:54,249 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 [2020-10-19 20:07:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 20:07:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-10-19 20:07:54,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 41 letters. Loop has 8 letters. [2020-10-19 20:07:54,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:54,250 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,357 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:54,424 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 [2020-10-19 20:07:54,424 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-10-19 20:07:54,551 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 223 states and 270 transitions. Complement of second has 21 states. [2020-10-19 20:07:54,552 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 [2020-10-19 20:07:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 20:07:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-10-19 20:07:54,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 41 letters. Loop has 8 letters. [2020-10-19 20:07:54,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:54,553 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:54,698 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 [2020-10-19 20:07:54,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-10-19 20:07:54,896 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 401 states and 472 transitions. Complement of second has 25 states. [2020-10-19 20:07:54,897 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 [2020-10-19 20:07:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 20:07:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2020-10-19 20:07:54,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 41 letters. Loop has 8 letters. [2020-10-19 20:07:54,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:54,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 49 letters. Loop has 8 letters. [2020-10-19 20:07:54,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:54,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 41 letters. Loop has 16 letters. [2020-10-19 20:07:54,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:54,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 401 states and 472 transitions. [2020-10-19 20:07:54,906 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2020-10-19 20:07:54,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 401 states to 297 states and 362 transitions. [2020-10-19 20:07:54,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 171 [2020-10-19 20:07:54,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2020-10-19 20:07:54,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 362 transitions. [2020-10-19 20:07:54,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:54,911 INFO L691 BuchiCegarLoop]: Abstraction has 297 states and 362 transitions. [2020-10-19 20:07:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 362 transitions. [2020-10-19 20:07:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 272. [2020-10-19 20:07:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-19 20:07:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-10-19 20:07:54,920 INFO L714 BuchiCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-10-19 20:07:54,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:54,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 20:07:54,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-19 20:07:54,921 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 13 states. [2020-10-19 20:07:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:55,131 INFO L93 Difference]: Finished difference Result 304 states and 372 transitions. [2020-10-19 20:07:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 20:07:55,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 304 states and 372 transitions. [2020-10-19 20:07:55,137 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:55,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 304 states to 302 states and 370 transitions. [2020-10-19 20:07:55,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 192 [2020-10-19 20:07:55,142 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2020-10-19 20:07:55,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 302 states and 370 transitions. [2020-10-19 20:07:55,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:55,143 INFO L691 BuchiCegarLoop]: Abstraction has 302 states and 370 transitions. [2020-10-19 20:07:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states and 370 transitions. [2020-10-19 20:07:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 277. [2020-10-19 20:07:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-19 20:07:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 336 transitions. [2020-10-19 20:07:55,152 INFO L714 BuchiCegarLoop]: Abstraction has 277 states and 336 transitions. [2020-10-19 20:07:55,152 INFO L594 BuchiCegarLoop]: Abstraction has 277 states and 336 transitions. [2020-10-19 20:07:55,152 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 20:07:55,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 336 transitions. [2020-10-19 20:07:55,154 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:55,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:55,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:55,156 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:55,156 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:55,157 INFO L794 eck$LassoCheckResult]: Stem: 6854#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6844#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 6824#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6825#fibo1ENTRY ~n := #in~n; 6911#L10 assume !(~n < 1); 6910#L12 assume !(1 == ~n); 6906#L15 call #t~ret7 := fibo2(~n - 1);< 6909#fibo2ENTRY ~n := #in~n; 6908#L20 assume !(~n < 1); 6907#L22 assume !(1 == ~n); 6882#L25 call #t~ret9 := fibo1(~n - 1);< 6883#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6902#L12 assume !(1 == ~n); 6878#L15 call #t~ret7 := fibo2(~n - 1);< 6891#fibo2ENTRY ~n := #in~n; 6892#L20 assume !(~n < 1); 7049#L22 assume !(1 == ~n); 7043#L25 call #t~ret9 := fibo1(~n - 1);< 7044#fibo1ENTRY ~n := #in~n; 7050#L10 assume !(~n < 1); 7048#L12 assume 1 == ~n;#res := 1; 7046#fibo1FINAL assume true; 7042#fibo1EXIT >#48#return; 7028#L25-1 call #t~ret10 := fibo1(~n - 2);< 7029#fibo1ENTRY ~n := #in~n; 7033#L10 assume ~n < 1;#res := 0; 7032#fibo1FINAL assume true; 7027#fibo1EXIT >#50#return; 7024#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 7019#fibo2FINAL assume true; 7015#fibo2EXIT >#52#return; 6972#L15-1 call #t~ret8 := fibo2(~n - 2);< 6973#fibo2ENTRY ~n := #in~n; 6981#L20 assume ~n < 1;#res := 0; 6980#fibo2FINAL assume true; 6971#fibo2EXIT >#54#return; 6969#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6968#fibo1FINAL assume true; 6962#fibo1EXIT >#48#return; 6850#L25-1 call #t~ret10 := fibo1(~n - 2);< 6952#fibo1ENTRY [2020-10-19 20:07:55,157 INFO L796 eck$LassoCheckResult]: Loop: 6952#fibo1ENTRY ~n := #in~n; 6946#L10 assume !(~n < 1); 6948#L12 assume !(1 == ~n); 6848#L15 call #t~ret7 := fibo2(~n - 1);< 6852#fibo2ENTRY ~n := #in~n; 6974#L20 assume !(~n < 1); 6970#L22 assume !(1 == ~n); 6960#L25 call #t~ret9 := fibo1(~n - 1);< 6966#fibo1ENTRY ~n := #in~n; 6979#L10 assume !(~n < 1); 6978#L12 assume !(1 == ~n); 6965#L15 call #t~ret7 := fibo2(~n - 1);< 6975#fibo2ENTRY ~n := #in~n; 6976#L20 assume !(~n < 1); 7011#L22 assume !(1 == ~n); 7010#L25 call #t~ret9 := fibo1(~n - 1);< 7035#fibo1ENTRY ~n := #in~n; 7038#L10 assume !(~n < 1); 7037#L12 assume 1 == ~n;#res := 1; 7036#fibo1FINAL assume true; 7034#fibo1EXIT >#48#return; 7022#L25-1 call #t~ret10 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7031#L10 assume ~n < 1;#res := 0; 7030#fibo1FINAL assume true; 7021#fibo1EXIT >#50#return; 7018#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 7014#fibo2FINAL assume true; 6991#fibo2EXIT >#52#return; 6987#L15-1 call #t~ret8 := fibo2(~n - 2);< 6989#fibo2ENTRY ~n := #in~n; 7001#L20 assume ~n < 1;#res := 0; 7000#fibo2FINAL assume true; 6985#fibo2EXIT >#54#return; 6983#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6964#fibo1FINAL assume true; 6963#fibo1EXIT >#48#return; 6851#L25-1 call #t~ret10 := fibo1(~n - 2);< 6952#fibo1ENTRY [2020-10-19 20:07:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash -205691575, now seen corresponding path program 1 times [2020-10-19 20:07:55,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692530207] [2020-10-19 20:07:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-19 20:07:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 20:07:55,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692530207] [2020-10-19 20:07:55,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12479131] [2020-10-19 20:07:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:07:55,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 20:07:55,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:55,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-10-19 20:07:55,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577583041] [2020-10-19 20:07:55,376 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1309552832, now seen corresponding path program 1 times [2020-10-19 20:07:55,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992058224] [2020-10-19 20:07:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-19 20:07:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-19 20:07:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-19 20:07:55,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992058224] [2020-10-19 20:07:55,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225753542] [2020-10-19 20:07:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:55,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-19 20:07:55,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:55,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-10-19 20:07:55,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210648639] [2020-10-19 20:07:55,531 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:07:55,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:55,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 20:07:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-19 20:07:55,532 INFO L87 Difference]: Start difference. First operand 277 states and 336 transitions. cyclomatic complexity: 64 Second operand 11 states. [2020-10-19 20:07:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:55,695 INFO L93 Difference]: Finished difference Result 321 states and 393 transitions. [2020-10-19 20:07:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 20:07:55,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 393 transitions. [2020-10-19 20:07:55,700 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:55,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 319 states and 391 transitions. [2020-10-19 20:07:55,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2020-10-19 20:07:55,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2020-10-19 20:07:55,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 319 states and 391 transitions. [2020-10-19 20:07:55,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:55,705 INFO L691 BuchiCegarLoop]: Abstraction has 319 states and 391 transitions. [2020-10-19 20:07:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states and 391 transitions. [2020-10-19 20:07:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 287. [2020-10-19 20:07:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-19 20:07:55,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 351 transitions. [2020-10-19 20:07:55,715 INFO L714 BuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2020-10-19 20:07:55,715 INFO L594 BuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2020-10-19 20:07:55,715 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 20:07:55,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 287 states and 351 transitions. [2020-10-19 20:07:55,718 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:55,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:55,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:55,719 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:55,719 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:55,720 INFO L794 eck$LassoCheckResult]: Stem: 7838#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7833#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 7813#L39 call main_#t~ret11 := fibo1(main_~x~0);< 7814#fibo1ENTRY ~n := #in~n; 7880#L10 assume !(~n < 1); 7879#L12 assume !(1 == ~n); 7875#L15 call #t~ret7 := fibo2(~n - 1);< 7878#fibo2ENTRY ~n := #in~n; 7877#L20 assume !(~n < 1); 7876#L22 assume !(1 == ~n); 7865#L25 call #t~ret9 := fibo1(~n - 1);< 7867#fibo1ENTRY ~n := #in~n; 7873#L10 assume !(~n < 1); 7872#L12 assume !(1 == ~n); 7862#L15 call #t~ret7 := fibo2(~n - 1);< 7870#fibo2ENTRY ~n := #in~n; 7871#L20 assume !(~n < 1); 7993#L22 assume !(1 == ~n); 7991#L25 call #t~ret9 := fibo1(~n - 1);< 7992#fibo1ENTRY ~n := #in~n; 8004#L10 assume !(~n < 1); 7999#L12 assume 1 == ~n;#res := 1; 7994#fibo1FINAL assume true; 7990#fibo1EXIT >#48#return; 7982#L25-1 call #t~ret10 := fibo1(~n - 2);< 7983#fibo1ENTRY ~n := #in~n; 7989#L10 assume ~n < 1;#res := 0; 7988#fibo1FINAL assume true; 7981#fibo1EXIT >#50#return; 7979#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 7978#fibo2FINAL assume true; 7977#fibo2EXIT >#52#return; 7974#L15-1 call #t~ret8 := fibo2(~n - 2);< 7975#fibo2ENTRY ~n := #in~n; 8009#L20 assume !(~n < 1); 8008#L22 assume 1 == ~n;#res := 1; 8007#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7959#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 7956#fibo1FINAL assume true; 7954#fibo1EXIT >#48#return; 7935#L25-1 call #t~ret10 := fibo1(~n - 2);< 7942#fibo1ENTRY [2020-10-19 20:07:55,720 INFO L796 eck$LassoCheckResult]: Loop: 7942#fibo1ENTRY ~n := #in~n; 7943#L10 assume !(~n < 1); 7934#L12 assume !(1 == ~n); 7795#L15 call #t~ret7 := fibo2(~n - 1);< 7932#fibo2ENTRY ~n := #in~n; 7843#L20 assume !(~n < 1); 7794#L22 assume !(1 == ~n); 7797#L25 call #t~ret9 := fibo1(~n - 1);< 7958#fibo1ENTRY ~n := #in~n; 7976#L10 assume !(~n < 1); 7972#L12 assume !(1 == ~n); 7796#L15 call #t~ret7 := fibo2(~n - 1);< 7841#fibo2ENTRY ~n := #in~n; 7842#L20 assume !(~n < 1); 8002#L22 assume 1 == ~n;#res := 1; 7998#fibo2FINAL assume true; 7986#fibo2EXIT >#52#return; 7964#L15-1 call #t~ret8 := fibo2(~n - 2);< 7966#fibo2ENTRY ~n := #in~n; 7995#L20 assume ~n < 1;#res := 0; 7996#fibo2FINAL assume true; 8044#fibo2EXIT >#54#return; 7965#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 8043#fibo1FINAL assume true; 7952#fibo1EXIT >#48#return; 7936#L25-1 call #t~ret10 := fibo1(~n - 2);< 7942#fibo1ENTRY [2020-10-19 20:07:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1129557662, now seen corresponding path program 1 times [2020-10-19 20:07:55,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220860972] [2020-10-19 20:07:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:55,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:55,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:55,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1552659165, now seen corresponding path program 1 times [2020-10-19 20:07:55,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496993080] [2020-10-19 20:07:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:55,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:55,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:55,756 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1204019970, now seen corresponding path program 1 times [2020-10-19 20:07:55,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264712165] [2020-10-19 20:07:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-19 20:07:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-19 20:07:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-19 20:07:55,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264712165] [2020-10-19 20:07:55,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874876805] [2020-10-19 20:07:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:55,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-19 20:07:55,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:55,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2020-10-19 20:07:55,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308440854] [2020-10-19 20:07:56,213 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:56,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:56,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:56,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:56,214 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:56,214 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,214 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:56,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:56,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2020-10-19 20:07:56,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:56,214 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:56,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,279 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:56,279 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:56,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,284 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,284 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,307 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,307 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,371 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,371 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,397 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,422 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,422 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:56,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,446 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,446 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:07:56,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,470 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,493 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,493 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:56,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,516 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:56,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,547 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:56,567 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:56,567 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:56,567 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:56,567 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:56,567 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:56,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,568 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:56,568 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:56,568 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2020-10-19 20:07:56,568 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:56,568 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:56,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,632 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:56,632 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,636 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 [2020-10-19 20:07:56,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:56,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,685 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 [2020-10-19 20:07:56,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,688 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,709 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 [2020-10-19 20:07:56,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,735 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 [2020-10-19 20:07:56,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,738 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,760 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 [2020-10-19 20:07:56,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,762 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,763 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,785 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 [2020-10-19 20:07:56,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,788 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,814 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 [2020-10-19 20:07:56,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,818 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,839 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 [2020-10-19 20:07:56,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:56,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:56,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:56,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:56,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:56,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:56,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:56,843 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:56,847 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:56,847 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 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 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,849 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:56,849 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:56,850 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:56,850 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-10-19 20:07:56,870 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:56,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:56,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:56,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:56,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:56,956 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:56,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:57,134 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-19 20:07:57,134 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:57,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 494 states and 593 transitions. Complement of second has 16 states. [2020-10-19 20:07:57,399 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 [2020-10-19 20:07:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2020-10-19 20:07:57,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 42 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:57,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:57,401 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:57,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:57,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:57,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:57,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:57,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:57,654 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-19 20:07:57,654 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:58,123 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 670 states and 816 transitions. Complement of second has 41 states. [2020-10-19 20:07:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-10-19 20:07:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2020-10-19 20:07:58,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:58,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:58,126 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:58,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:58,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:58,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:58,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:58,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:58,394 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-19 20:07:58,394 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:58,683 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 542 states and 647 transitions. Complement of second has 15 states. [2020-10-19 20:07:58,686 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 [2020-10-19 20:07:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2020-10-19 20:07:58,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:58,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:58,688 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:58,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:58,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:58,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,780 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:58,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:58,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:58,944 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-19 20:07:58,944 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:59,469 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 752 states and 919 transitions. Complement of second has 45 states. [2020-10-19 20:07:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-10-19 20:07:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2020-10-19 20:07:59,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:59,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:59,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 68 letters. Loop has 26 letters. [2020-10-19 20:07:59,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:59,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 42 letters. Loop has 52 letters. [2020-10-19 20:07:59,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:59,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 752 states and 919 transitions. [2020-10-19 20:07:59,489 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2020-10-19 20:07:59,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 752 states to 483 states and 610 transitions. [2020-10-19 20:07:59,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2020-10-19 20:07:59,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 262 [2020-10-19 20:07:59,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 610 transitions. [2020-10-19 20:07:59,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:59,498 INFO L691 BuchiCegarLoop]: Abstraction has 483 states and 610 transitions. [2020-10-19 20:07:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 610 transitions. [2020-10-19 20:07:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 397. [2020-10-19 20:07:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-19 20:07:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 484 transitions. [2020-10-19 20:07:59,513 INFO L714 BuchiCegarLoop]: Abstraction has 397 states and 484 transitions. [2020-10-19 20:07:59,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:59,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 20:07:59,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-19 20:07:59,514 INFO L87 Difference]: Start difference. First operand 397 states and 484 transitions. Second operand 14 states. [2020-10-19 20:07:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:59,847 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2020-10-19 20:07:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 20:07:59,848 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 204 transitions. [2020-10-19 20:07:59,850 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:07:59,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2020-10-19 20:07:59,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:07:59,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:07:59,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:07:59,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:07:59,852 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:59,852 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:59,852 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:07:59,852 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-19 20:07:59,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:07:59,852 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:07:59,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:07:59,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:07:59 BoogieIcfgContainer [2020-10-19 20:07:59,859 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:07:59,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:07:59,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:07:59,859 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:07:59,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:07:43" (3/4) ... [2020-10-19 20:07:59,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:07:59,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:07:59,866 INFO L168 Benchmark]: Toolchain (without parser) took 16545.08 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 379.6 MB). Free memory was 960.0 MB in the beginning and 1.4 GB in the end (delta: -404.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:07:59,866 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:07:59,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:59,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:59,868 INFO L168 Benchmark]: Boogie Preprocessor took 18.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:59,872 INFO L168 Benchmark]: RCFGBuilder took 266.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2020-10-19 20:07:59,872 INFO L168 Benchmark]: BuchiAutomizer took 15877.54 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 252.7 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -267.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:07:59,873 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 1.4 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:07:59,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 266.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 15877.54 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 252.7 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -267.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.63 ms. Allocated memory is still 1.4 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 11 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.8s and 9 iterations. TraceHistogramMax:8. Analysis of lassos took 8.3s. Construction of modules took 1.9s. Büchi inclusion checks took 4.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 270 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 287 states and ocurred in iteration 7. Nontrivial modules had stage [3, 0, 1, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 373 SDtfs, 861 SDslu, 911 SDs, 0 SdLazy, 2367 SolverSat, 418 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI3 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf84 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf91 smp84 dnf100 smp100 tf111 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 33 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...