7.64/3.51 YES 9.39/4.03 proof of /export/starexec/sandbox/benchmark/theBenchmark.hs 9.39/4.03 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 9.39/4.03 9.39/4.03 9.39/4.03 H-Termination with start terms of the given HASKELL could be proven: 9.39/4.03 9.39/4.03 (0) HASKELL 9.39/4.03 (1) BR [EQUIVALENT, 0 ms] 9.39/4.03 (2) HASKELL 9.39/4.03 (3) COR [EQUIVALENT, 0 ms] 9.39/4.03 (4) HASKELL 9.39/4.03 (5) Narrow [SOUND, 0 ms] 9.39/4.03 (6) AND 9.39/4.03 (7) QDP 9.39/4.03 (8) QDPSizeChangeProof [EQUIVALENT, 0 ms] 9.39/4.03 (9) YES 9.39/4.03 (10) QDP 9.39/4.03 (11) QDPSizeChangeProof [EQUIVALENT, 0 ms] 9.39/4.03 (12) YES 9.39/4.03 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (0) 9.39/4.03 Obligation: 9.39/4.03 mainModule Main 9.39/4.03 module Main where { 9.39/4.03 import qualified Prelude; 9.39/4.03 data List a = Cons a (List a) | Nil ; 9.39/4.03 9.39/4.03 concat :: List (List a) -> List a; 9.39/4.03 concat = foldr psPs Nil; 9.39/4.03 9.39/4.03 concatMap :: (a -> List b) -> List a -> List b; 9.39/4.03 concatMap f = pt concat (map f); 9.39/4.03 9.39/4.03 foldr :: (b -> a -> a) -> a -> List b -> a; 9.39/4.03 foldr f z Nil = z; 9.39/4.03 foldr f z (Cons x xs) = f x (foldr f z xs); 9.39/4.03 9.39/4.03 map :: (b -> a) -> List b -> List a; 9.39/4.03 map f Nil = Nil; 9.39/4.03 map f (Cons x xs) = Cons (f x) (map f xs); 9.39/4.03 9.39/4.03 psPs :: List a -> List a -> List a; 9.39/4.03 psPs Nil ys = ys; 9.39/4.03 psPs (Cons x xs) ys = Cons x (psPs xs ys); 9.39/4.03 9.39/4.03 pt :: (c -> b) -> (a -> c) -> a -> b; 9.39/4.03 pt f g x = f (g x); 9.39/4.03 9.39/4.03 } 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (1) BR (EQUIVALENT) 9.39/4.03 Replaced joker patterns by fresh variables and removed binding patterns. 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (2) 9.39/4.03 Obligation: 9.39/4.03 mainModule Main 9.39/4.03 module Main where { 9.39/4.03 import qualified Prelude; 9.39/4.03 data List a = Cons a (List a) | Nil ; 9.39/4.03 9.39/4.03 concat :: List (List a) -> List a; 9.39/4.03 concat = foldr psPs Nil; 9.39/4.03 9.39/4.03 concatMap :: (b -> List a) -> List b -> List a; 9.39/4.03 concatMap f = pt concat (map f); 9.39/4.03 9.39/4.03 foldr :: (a -> b -> b) -> b -> List a -> b; 9.39/4.03 foldr f z Nil = z; 9.39/4.03 foldr f z (Cons x xs) = f x (foldr f z xs); 9.39/4.03 9.39/4.03 map :: (b -> a) -> List b -> List a; 9.39/4.03 map f Nil = Nil; 9.39/4.03 map f (Cons x xs) = Cons (f x) (map f xs); 9.39/4.03 9.39/4.03 psPs :: List a -> List a -> List a; 9.39/4.03 psPs Nil ys = ys; 9.39/4.03 psPs (Cons x xs) ys = Cons x (psPs xs ys); 9.39/4.03 9.39/4.03 pt :: (a -> b) -> (c -> a) -> c -> b; 9.39/4.03 pt f g x = f (g x); 9.39/4.03 9.39/4.03 } 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (3) COR (EQUIVALENT) 9.39/4.03 Cond Reductions: 9.39/4.03 The following Function with conditions 9.39/4.03 "undefined |Falseundefined; 9.39/4.03 " 9.39/4.03 is transformed to 9.39/4.03 "undefined = undefined1; 9.39/4.03 " 9.39/4.03 "undefined0 True = undefined; 9.39/4.03 " 9.39/4.03 "undefined1 = undefined0 False; 9.39/4.03 " 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (4) 9.39/4.03 Obligation: 9.39/4.03 mainModule Main 9.39/4.03 module Main where { 9.39/4.03 import qualified Prelude; 9.39/4.03 data List a = Cons a (List a) | Nil ; 9.39/4.03 9.39/4.03 concat :: List (List a) -> List a; 9.39/4.03 concat = foldr psPs Nil; 9.39/4.03 9.39/4.03 concatMap :: (a -> List b) -> List a -> List b; 9.39/4.03 concatMap f = pt concat (map f); 9.39/4.03 9.39/4.03 foldr :: (b -> a -> a) -> a -> List b -> a; 9.39/4.03 foldr f z Nil = z; 9.39/4.03 foldr f z (Cons x xs) = f x (foldr f z xs); 9.39/4.03 9.39/4.03 map :: (b -> a) -> List b -> List a; 9.39/4.03 map f Nil = Nil; 9.39/4.03 map f (Cons x xs) = Cons (f x) (map f xs); 9.39/4.03 9.39/4.03 psPs :: List a -> List a -> List a; 9.39/4.03 psPs Nil ys = ys; 9.39/4.03 psPs (Cons x xs) ys = Cons x (psPs xs ys); 9.39/4.03 9.39/4.03 pt :: (b -> a) -> (c -> b) -> c -> a; 9.39/4.03 pt f g x = f (g x); 9.39/4.03 9.39/4.03 } 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (5) Narrow (SOUND) 9.39/4.03 Haskell To QDPs 9.39/4.03 9.39/4.03 digraph dp_graph { 9.39/4.03 node [outthreshold=100, inthreshold=100];1[label="concatMap",fontsize=16,color="grey",shape="box"];1 -> 3[label="",style="dashed", color="grey", weight=3]; 9.39/4.03 3[label="concatMap vx3",fontsize=16,color="grey",shape="box"];3 -> 4[label="",style="dashed", color="grey", weight=3]; 9.39/4.03 4[label="concatMap vx3 vx4",fontsize=16,color="black",shape="triangle"];4 -> 5[label="",style="solid", color="black", weight=3]; 9.39/4.03 5[label="pt concat (map vx3) vx4",fontsize=16,color="black",shape="box"];5 -> 6[label="",style="solid", color="black", weight=3]; 9.39/4.03 6[label="concat (map vx3 vx4)",fontsize=16,color="black",shape="box"];6 -> 7[label="",style="solid", color="black", weight=3]; 9.39/4.03 7[label="foldr psPs Nil (map vx3 vx4)",fontsize=16,color="burlywood",shape="triangle"];30[label="vx4/Cons vx40 vx41",fontsize=10,color="white",style="solid",shape="box"];7 -> 30[label="",style="solid", color="burlywood", weight=9]; 9.39/4.03 30 -> 8[label="",style="solid", color="burlywood", weight=3]; 9.39/4.03 31[label="vx4/Nil",fontsize=10,color="white",style="solid",shape="box"];7 -> 31[label="",style="solid", color="burlywood", weight=9]; 9.39/4.03 31 -> 9[label="",style="solid", color="burlywood", weight=3]; 9.39/4.03 8[label="foldr psPs Nil (map vx3 (Cons vx40 vx41))",fontsize=16,color="black",shape="box"];8 -> 10[label="",style="solid", color="black", weight=3]; 9.39/4.03 9[label="foldr psPs Nil (map vx3 Nil)",fontsize=16,color="black",shape="box"];9 -> 11[label="",style="solid", color="black", weight=3]; 9.39/4.03 10[label="foldr psPs Nil (Cons (vx3 vx40) (map vx3 vx41))",fontsize=16,color="black",shape="box"];10 -> 12[label="",style="solid", color="black", weight=3]; 9.39/4.03 11[label="foldr psPs Nil Nil",fontsize=16,color="black",shape="box"];11 -> 13[label="",style="solid", color="black", weight=3]; 9.39/4.03 12 -> 17[label="",style="dashed", color="red", weight=0]; 9.39/4.03 12[label="psPs (vx3 vx40) (foldr psPs Nil (map vx3 vx41))",fontsize=16,color="magenta"];12 -> 18[label="",style="dashed", color="magenta", weight=3]; 9.39/4.03 12 -> 19[label="",style="dashed", color="magenta", weight=3]; 9.39/4.03 13[label="Nil",fontsize=16,color="green",shape="box"];18[label="vx3 vx40",fontsize=16,color="green",shape="box"];18 -> 21[label="",style="dashed", color="green", weight=3]; 9.39/4.03 19 -> 7[label="",style="dashed", color="red", weight=0]; 9.39/4.03 19[label="foldr psPs Nil (map vx3 vx41)",fontsize=16,color="magenta"];19 -> 22[label="",style="dashed", color="magenta", weight=3]; 9.39/4.03 17[label="psPs vx6 vx5",fontsize=16,color="burlywood",shape="triangle"];32[label="vx6/Cons vx60 vx61",fontsize=10,color="white",style="solid",shape="box"];17 -> 32[label="",style="solid", color="burlywood", weight=9]; 9.39/4.03 32 -> 23[label="",style="solid", color="burlywood", weight=3]; 9.39/4.03 33[label="vx6/Nil",fontsize=10,color="white",style="solid",shape="box"];17 -> 33[label="",style="solid", color="burlywood", weight=9]; 9.39/4.03 33 -> 24[label="",style="solid", color="burlywood", weight=3]; 9.39/4.03 21[label="vx40",fontsize=16,color="green",shape="box"];22[label="vx41",fontsize=16,color="green",shape="box"];23[label="psPs (Cons vx60 vx61) vx5",fontsize=16,color="black",shape="box"];23 -> 26[label="",style="solid", color="black", weight=3]; 9.39/4.03 24[label="psPs Nil vx5",fontsize=16,color="black",shape="box"];24 -> 27[label="",style="solid", color="black", weight=3]; 9.39/4.03 26[label="Cons vx60 (psPs vx61 vx5)",fontsize=16,color="green",shape="box"];26 -> 28[label="",style="dashed", color="green", weight=3]; 9.39/4.03 27[label="vx5",fontsize=16,color="green",shape="box"];28 -> 17[label="",style="dashed", color="red", weight=0]; 9.39/4.03 28[label="psPs vx61 vx5",fontsize=16,color="magenta"];28 -> 29[label="",style="dashed", color="magenta", weight=3]; 9.39/4.03 29[label="vx61",fontsize=16,color="green",shape="box"];} 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (6) 9.39/4.03 Complex Obligation (AND) 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (7) 9.39/4.03 Obligation: 9.39/4.03 Q DP problem: 9.39/4.03 The TRS P consists of the following rules: 9.39/4.03 9.39/4.03 new_psPs(Cons(vx60, vx61), vx5, h) -> new_psPs(vx61, vx5, h) 9.39/4.03 9.39/4.03 R is empty. 9.39/4.03 Q is empty. 9.39/4.03 We have to consider all minimal (P,Q,R)-chains. 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (8) QDPSizeChangeProof (EQUIVALENT) 9.39/4.03 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. 9.39/4.03 9.39/4.03 From the DPs we obtained the following set of size-change graphs: 9.39/4.03 *new_psPs(Cons(vx60, vx61), vx5, h) -> new_psPs(vx61, vx5, h) 9.39/4.03 The graph contains the following edges 1 > 1, 2 >= 2, 3 >= 3 9.39/4.03 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (9) 9.39/4.03 YES 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (10) 9.39/4.03 Obligation: 9.39/4.03 Q DP problem: 9.39/4.03 The TRS P consists of the following rules: 9.39/4.03 9.39/4.03 new_foldr(vx3, Cons(vx40, vx41), h, ba) -> new_foldr(vx3, vx41, h, ba) 9.39/4.03 9.39/4.03 R is empty. 9.39/4.03 Q is empty. 9.39/4.03 We have to consider all minimal (P,Q,R)-chains. 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (11) QDPSizeChangeProof (EQUIVALENT) 9.39/4.03 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. 9.39/4.03 9.39/4.03 From the DPs we obtained the following set of size-change graphs: 9.39/4.03 *new_foldr(vx3, Cons(vx40, vx41), h, ba) -> new_foldr(vx3, vx41, h, ba) 9.39/4.03 The graph contains the following edges 1 >= 1, 2 > 2, 3 >= 3, 4 >= 4 9.39/4.03 9.39/4.03 9.39/4.03 ---------------------------------------- 9.39/4.03 9.39/4.03 (12) 9.39/4.03 YES 9.71/4.12 EOF