7.76/3.61 YES 9.51/4.09 proof of /export/starexec/sandbox/benchmark/theBenchmark.hs 9.51/4.09 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 9.51/4.09 9.51/4.09 9.51/4.09 H-Termination with start terms of the given HASKELL could be proven: 9.51/4.09 9.51/4.09 (0) HASKELL 9.51/4.09 (1) BR [EQUIVALENT, 0 ms] 9.51/4.09 (2) HASKELL 9.51/4.09 (3) COR [EQUIVALENT, 0 ms] 9.51/4.09 (4) HASKELL 9.51/4.09 (5) Narrow [SOUND, 0 ms] 9.51/4.09 (6) QDP 9.51/4.09 (7) QDPSizeChangeProof [EQUIVALENT, 0 ms] 9.51/4.09 (8) YES 9.51/4.09 9.51/4.09 9.51/4.09 ---------------------------------------- 9.51/4.09 9.51/4.09 (0) 9.51/4.09 Obligation: 9.51/4.09 mainModule Main 9.51/4.09 module Main where { 9.51/4.09 import qualified Prelude; 9.51/4.09 data List a = Cons a (List a) | Nil ; 9.51/4.09 9.51/4.09 data Main.Maybe a = Nothing | Just a ; 9.51/4.09 9.51/4.09 data Tup0 = Tup0 ; 9.51/4.09 9.51/4.09 foldr :: (a -> b -> b) -> b -> List a -> b; 9.51/4.09 foldr f z Nil = z; 9.51/4.09 foldr f z (Cons x xs) = f x (foldr f z xs); 9.51/4.09 9.51/4.09 gtGt0 q vv = q; 9.51/4.09 9.51/4.09 gtGtEsMaybe :: Main.Maybe a -> (a -> Main.Maybe b) -> Main.Maybe b; 9.51/4.09 gtGtEsMaybe (Main.Just x) k = k x; 9.51/4.09 gtGtEsMaybe Main.Nothing k = Main.Nothing; 9.51/4.09 9.51/4.09 gtGtMaybe :: Main.Maybe b -> Main.Maybe a -> Main.Maybe a; 9.51/4.09 gtGtMaybe p q = gtGtEsMaybe p (gtGt0 q); 9.51/4.09 9.51/4.09 map :: (a -> b) -> List a -> List b; 9.51/4.10 map f Nil = Nil; 9.51/4.10 map f (Cons x xs) = Cons (f x) (map f xs); 9.51/4.10 9.51/4.10 mapM_ f = pt sequence_Maybe (map f); 9.51/4.10 9.51/4.10 pt :: (b -> a) -> (c -> b) -> c -> a; 9.51/4.10 pt f g x = f (g x); 9.51/4.10 9.51/4.10 returnMaybe :: a -> Main.Maybe a; 9.51/4.10 returnMaybe = Main.Just; 9.51/4.10 9.51/4.10 sequence_Maybe :: List (Main.Maybe a) -> Main.Maybe Tup0; 9.51/4.10 sequence_Maybe = foldr gtGtMaybe (returnMaybe Tup0); 9.51/4.10 9.51/4.10 } 9.51/4.10 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (1) BR (EQUIVALENT) 9.51/4.10 Replaced joker patterns by fresh variables and removed binding patterns. 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (2) 9.51/4.10 Obligation: 9.51/4.10 mainModule Main 9.51/4.10 module Main where { 9.51/4.10 import qualified Prelude; 9.51/4.10 data List a = Cons a (List a) | Nil ; 9.51/4.10 9.51/4.10 data Main.Maybe a = Nothing | Just a ; 9.51/4.10 9.51/4.10 data Tup0 = Tup0 ; 9.51/4.10 9.51/4.10 foldr :: (a -> b -> b) -> b -> List a -> b; 9.51/4.10 foldr f z Nil = z; 9.51/4.10 foldr f z (Cons x xs) = f x (foldr f z xs); 9.51/4.10 9.51/4.10 gtGt0 q vv = q; 9.51/4.10 9.51/4.10 gtGtEsMaybe :: Main.Maybe a -> (a -> Main.Maybe b) -> Main.Maybe b; 9.51/4.10 gtGtEsMaybe (Main.Just x) k = k x; 9.51/4.10 gtGtEsMaybe Main.Nothing k = Main.Nothing; 9.51/4.10 9.51/4.10 gtGtMaybe :: Main.Maybe b -> Main.Maybe a -> Main.Maybe a; 9.51/4.10 gtGtMaybe p q = gtGtEsMaybe p (gtGt0 q); 9.51/4.10 9.51/4.10 map :: (b -> a) -> List b -> List a; 9.51/4.10 map f Nil = Nil; 9.51/4.10 map f (Cons x xs) = Cons (f x) (map f xs); 9.51/4.10 9.51/4.10 mapM_ f = pt sequence_Maybe (map f); 9.51/4.10 9.51/4.10 pt :: (b -> c) -> (a -> b) -> a -> c; 9.51/4.10 pt f g x = f (g x); 9.51/4.10 9.51/4.10 returnMaybe :: a -> Main.Maybe a; 9.51/4.10 returnMaybe = Main.Just; 9.51/4.10 9.51/4.10 sequence_Maybe :: List (Main.Maybe a) -> Main.Maybe Tup0; 9.51/4.10 sequence_Maybe = foldr gtGtMaybe (returnMaybe Tup0); 9.51/4.10 9.51/4.10 } 9.51/4.10 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (3) COR (EQUIVALENT) 9.51/4.10 Cond Reductions: 9.51/4.10 The following Function with conditions 9.51/4.10 "undefined |Falseundefined; 9.51/4.10 " 9.51/4.10 is transformed to 9.51/4.10 "undefined = undefined1; 9.51/4.10 " 9.51/4.10 "undefined0 True = undefined; 9.51/4.10 " 9.51/4.10 "undefined1 = undefined0 False; 9.51/4.10 " 9.51/4.10 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (4) 9.51/4.10 Obligation: 9.51/4.10 mainModule Main 9.51/4.10 module Main where { 9.51/4.10 import qualified Prelude; 9.51/4.10 data List a = Cons a (List a) | Nil ; 9.51/4.10 9.51/4.10 data Main.Maybe a = Nothing | Just a ; 9.51/4.10 9.51/4.10 data Tup0 = Tup0 ; 9.51/4.10 9.51/4.10 foldr :: (b -> a -> a) -> a -> List b -> a; 9.51/4.10 foldr f z Nil = z; 9.51/4.10 foldr f z (Cons x xs) = f x (foldr f z xs); 9.51/4.10 9.51/4.10 gtGt0 q vv = q; 9.51/4.10 9.51/4.10 gtGtEsMaybe :: Main.Maybe b -> (b -> Main.Maybe a) -> Main.Maybe a; 9.51/4.10 gtGtEsMaybe (Main.Just x) k = k x; 9.51/4.10 gtGtEsMaybe Main.Nothing k = Main.Nothing; 9.51/4.10 9.51/4.10 gtGtMaybe :: Main.Maybe a -> Main.Maybe b -> Main.Maybe b; 9.51/4.10 gtGtMaybe p q = gtGtEsMaybe p (gtGt0 q); 9.51/4.10 9.51/4.10 map :: (a -> b) -> List a -> List b; 9.51/4.10 map f Nil = Nil; 9.51/4.10 map f (Cons x xs) = Cons (f x) (map f xs); 9.51/4.10 9.51/4.10 mapM_ f = pt sequence_Maybe (map f); 9.51/4.10 9.51/4.10 pt :: (b -> a) -> (c -> b) -> c -> a; 9.51/4.10 pt f g x = f (g x); 9.51/4.10 9.51/4.10 returnMaybe :: a -> Main.Maybe a; 9.51/4.10 returnMaybe = Main.Just; 9.51/4.10 9.51/4.10 sequence_Maybe :: List (Main.Maybe a) -> Main.Maybe Tup0; 9.51/4.10 sequence_Maybe = foldr gtGtMaybe (returnMaybe Tup0); 9.51/4.10 9.51/4.10 } 9.51/4.10 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (5) Narrow (SOUND) 9.51/4.10 Haskell To QDPs 9.51/4.10 9.51/4.10 digraph dp_graph { 9.51/4.10 node [outthreshold=100, inthreshold=100];1[label="mapM_",fontsize=16,color="grey",shape="box"];1 -> 3[label="",style="dashed", color="grey", weight=3]; 9.51/4.10 3[label="mapM_ vy3",fontsize=16,color="grey",shape="box"];3 -> 4[label="",style="dashed", color="grey", weight=3]; 9.51/4.10 4[label="mapM_ vy3 vy4",fontsize=16,color="black",shape="triangle"];4 -> 5[label="",style="solid", color="black", weight=3]; 9.51/4.10 5[label="pt sequence_Maybe (map vy3) vy4",fontsize=16,color="black",shape="box"];5 -> 6[label="",style="solid", color="black", weight=3]; 9.51/4.10 6[label="sequence_Maybe (map vy3 vy4)",fontsize=16,color="black",shape="box"];6 -> 7[label="",style="solid", color="black", weight=3]; 9.51/4.10 7[label="foldr gtGtMaybe (returnMaybe Tup0) (map vy3 vy4)",fontsize=16,color="burlywood",shape="triangle"];28[label="vy4/Cons vy40 vy41",fontsize=10,color="white",style="solid",shape="box"];7 -> 28[label="",style="solid", color="burlywood", weight=9]; 9.51/4.10 28 -> 8[label="",style="solid", color="burlywood", weight=3]; 9.51/4.10 29[label="vy4/Nil",fontsize=10,color="white",style="solid",shape="box"];7 -> 29[label="",style="solid", color="burlywood", weight=9]; 9.51/4.10 29 -> 9[label="",style="solid", color="burlywood", weight=3]; 9.51/4.10 8[label="foldr gtGtMaybe (returnMaybe Tup0) (map vy3 (Cons vy40 vy41))",fontsize=16,color="black",shape="box"];8 -> 10[label="",style="solid", color="black", weight=3]; 9.51/4.10 9[label="foldr gtGtMaybe (returnMaybe Tup0) (map vy3 Nil)",fontsize=16,color="black",shape="box"];9 -> 11[label="",style="solid", color="black", weight=3]; 9.51/4.10 10[label="foldr gtGtMaybe (returnMaybe Tup0) (Cons (vy3 vy40) (map vy3 vy41))",fontsize=16,color="black",shape="box"];10 -> 12[label="",style="solid", color="black", weight=3]; 9.51/4.10 11[label="foldr gtGtMaybe (returnMaybe Tup0) Nil",fontsize=16,color="black",shape="box"];11 -> 13[label="",style="solid", color="black", weight=3]; 9.51/4.10 12 -> 14[label="",style="dashed", color="red", weight=0]; 9.51/4.10 12[label="gtGtMaybe (vy3 vy40) (foldr gtGtMaybe (returnMaybe Tup0) (map vy3 vy41))",fontsize=16,color="magenta"];12 -> 15[label="",style="dashed", color="magenta", weight=3]; 9.51/4.10 13[label="returnMaybe Tup0",fontsize=16,color="black",shape="box"];13 -> 16[label="",style="solid", color="black", weight=3]; 9.51/4.10 15 -> 7[label="",style="dashed", color="red", weight=0]; 9.51/4.10 15[label="foldr gtGtMaybe (returnMaybe Tup0) (map vy3 vy41)",fontsize=16,color="magenta"];15 -> 17[label="",style="dashed", color="magenta", weight=3]; 9.51/4.10 14[label="gtGtMaybe (vy3 vy40) vy5",fontsize=16,color="black",shape="triangle"];14 -> 18[label="",style="solid", color="black", weight=3]; 9.51/4.10 16[label="Just Tup0",fontsize=16,color="green",shape="box"];17[label="vy41",fontsize=16,color="green",shape="box"];18 -> 19[label="",style="dashed", color="red", weight=0]; 9.51/4.10 18[label="gtGtEsMaybe (vy3 vy40) (gtGt0 vy5)",fontsize=16,color="magenta"];18 -> 20[label="",style="dashed", color="magenta", weight=3]; 9.51/4.10 20[label="vy3 vy40",fontsize=16,color="green",shape="box"];20 -> 24[label="",style="dashed", color="green", weight=3]; 9.51/4.10 19[label="gtGtEsMaybe vy6 (gtGt0 vy5)",fontsize=16,color="burlywood",shape="triangle"];30[label="vy6/Nothing",fontsize=10,color="white",style="solid",shape="box"];19 -> 30[label="",style="solid", color="burlywood", weight=9]; 9.51/4.10 30 -> 22[label="",style="solid", color="burlywood", weight=3]; 9.51/4.10 31[label="vy6/Just vy60",fontsize=10,color="white",style="solid",shape="box"];19 -> 31[label="",style="solid", color="burlywood", weight=9]; 9.51/4.10 31 -> 23[label="",style="solid", color="burlywood", weight=3]; 9.51/4.10 24[label="vy40",fontsize=16,color="green",shape="box"];22[label="gtGtEsMaybe Nothing (gtGt0 vy5)",fontsize=16,color="black",shape="box"];22 -> 25[label="",style="solid", color="black", weight=3]; 9.51/4.10 23[label="gtGtEsMaybe (Just vy60) (gtGt0 vy5)",fontsize=16,color="black",shape="box"];23 -> 26[label="",style="solid", color="black", weight=3]; 9.51/4.10 25[label="Nothing",fontsize=16,color="green",shape="box"];26[label="gtGt0 vy5 vy60",fontsize=16,color="black",shape="box"];26 -> 27[label="",style="solid", color="black", weight=3]; 9.51/4.10 27[label="vy5",fontsize=16,color="green",shape="box"];} 9.51/4.10 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (6) 9.51/4.10 Obligation: 9.51/4.10 Q DP problem: 9.51/4.10 The TRS P consists of the following rules: 9.51/4.10 9.51/4.10 new_foldr(vy3, Cons(vy40, vy41), h, ba) -> new_foldr(vy3, vy41, h, ba) 9.51/4.10 9.51/4.10 R is empty. 9.51/4.10 Q is empty. 9.51/4.10 We have to consider all minimal (P,Q,R)-chains. 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (7) QDPSizeChangeProof (EQUIVALENT) 9.51/4.10 By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] we have proven that there are no infinite chains for this DP problem. 9.51/4.10 9.51/4.10 From the DPs we obtained the following set of size-change graphs: 9.51/4.10 *new_foldr(vy3, Cons(vy40, vy41), h, ba) -> new_foldr(vy3, vy41, h, ba) 9.51/4.10 The graph contains the following edges 1 >= 1, 2 > 2, 3 >= 3, 4 >= 4 9.51/4.10 9.51/4.10 9.51/4.10 ---------------------------------------- 9.51/4.10 9.51/4.10 (8) 9.51/4.10 YES 9.51/4.16 EOF