8.11/3.55 YES 9.86/4.03 proof of /export/starexec/sandbox/benchmark/theBenchmark.hs 9.86/4.03 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 9.86/4.03 9.86/4.03 9.86/4.03 H-Termination with start terms of the given HASKELL could be proven: 9.86/4.03 9.86/4.03 (0) HASKELL 9.86/4.03 (1) BR [EQUIVALENT, 0 ms] 9.86/4.03 (2) HASKELL 9.86/4.03 (3) COR [EQUIVALENT, 0 ms] 9.86/4.03 (4) HASKELL 9.86/4.03 (5) Narrow [SOUND, 0 ms] 9.86/4.03 (6) QDP 9.86/4.03 (7) QDPSizeChangeProof [EQUIVALENT, 0 ms] 9.86/4.03 (8) YES 9.86/4.03 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (0) 9.86/4.03 Obligation: 9.86/4.03 mainModule Main 9.86/4.03 module Main where { 9.86/4.03 import qualified Prelude; 9.86/4.03 data List a = Cons a (List a) | Nil ; 9.86/4.03 9.86/4.03 data MyBool = MyTrue | MyFalse ; 9.86/4.03 9.86/4.03 dropWhile :: (a -> MyBool) -> List a -> List a; 9.86/4.03 dropWhile p Nil = dropWhile3 p Nil; 9.86/4.03 dropWhile p (Cons vv vw) = dropWhile2 p (Cons vv vw); 9.86/4.03 9.86/4.03 dropWhile0 p vv vw MyTrue = Cons vv vw; 9.86/4.03 9.86/4.03 dropWhile1 p vv vw MyTrue = dropWhile p vw; 9.86/4.03 dropWhile1 p vv vw MyFalse = dropWhile0 p vv vw otherwise; 9.86/4.03 9.86/4.03 dropWhile2 p (Cons vv vw) = dropWhile1 p vv vw (p vv); 9.86/4.03 9.86/4.03 dropWhile3 p Nil = Nil; 9.86/4.03 dropWhile3 vz wu = dropWhile2 vz wu; 9.86/4.03 9.86/4.03 otherwise :: MyBool; 9.86/4.03 otherwise = MyTrue; 9.86/4.03 9.86/4.03 } 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (1) BR (EQUIVALENT) 9.86/4.03 Replaced joker patterns by fresh variables and removed binding patterns. 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (2) 9.86/4.03 Obligation: 9.86/4.03 mainModule Main 9.86/4.03 module Main where { 9.86/4.03 import qualified Prelude; 9.86/4.03 data List a = Cons a (List a) | Nil ; 9.86/4.03 9.86/4.03 data MyBool = MyTrue | MyFalse ; 9.86/4.03 9.86/4.03 dropWhile :: (a -> MyBool) -> List a -> List a; 9.86/4.03 dropWhile p Nil = dropWhile3 p Nil; 9.86/4.03 dropWhile p (Cons vv vw) = dropWhile2 p (Cons vv vw); 9.86/4.03 9.86/4.03 dropWhile0 p vv vw MyTrue = Cons vv vw; 9.86/4.03 9.86/4.03 dropWhile1 p vv vw MyTrue = dropWhile p vw; 9.86/4.03 dropWhile1 p vv vw MyFalse = dropWhile0 p vv vw otherwise; 9.86/4.03 9.86/4.03 dropWhile2 p (Cons vv vw) = dropWhile1 p vv vw (p vv); 9.86/4.03 9.86/4.03 dropWhile3 p Nil = Nil; 9.86/4.03 dropWhile3 vz wu = dropWhile2 vz wu; 9.86/4.03 9.86/4.03 otherwise :: MyBool; 9.86/4.03 otherwise = MyTrue; 9.86/4.03 9.86/4.03 } 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (3) COR (EQUIVALENT) 9.86/4.03 Cond Reductions: 9.86/4.03 The following Function with conditions 9.86/4.03 "undefined |Falseundefined; 9.86/4.03 " 9.86/4.03 is transformed to 9.86/4.03 "undefined = undefined1; 9.86/4.03 " 9.86/4.03 "undefined0 True = undefined; 9.86/4.03 " 9.86/4.03 "undefined1 = undefined0 False; 9.86/4.03 " 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (4) 9.86/4.03 Obligation: 9.86/4.03 mainModule Main 9.86/4.03 module Main where { 9.86/4.03 import qualified Prelude; 9.86/4.03 data List a = Cons a (List a) | Nil ; 9.86/4.03 9.86/4.03 data MyBool = MyTrue | MyFalse ; 9.86/4.03 9.86/4.03 dropWhile :: (a -> MyBool) -> List a -> List a; 9.86/4.03 dropWhile p Nil = dropWhile3 p Nil; 9.86/4.03 dropWhile p (Cons vv vw) = dropWhile2 p (Cons vv vw); 9.86/4.03 9.86/4.03 dropWhile0 p vv vw MyTrue = Cons vv vw; 9.86/4.03 9.86/4.03 dropWhile1 p vv vw MyTrue = dropWhile p vw; 9.86/4.03 dropWhile1 p vv vw MyFalse = dropWhile0 p vv vw otherwise; 9.86/4.03 9.86/4.03 dropWhile2 p (Cons vv vw) = dropWhile1 p vv vw (p vv); 9.86/4.03 9.86/4.03 dropWhile3 p Nil = Nil; 9.86/4.03 dropWhile3 vz wu = dropWhile2 vz wu; 9.86/4.03 9.86/4.03 otherwise :: MyBool; 9.86/4.03 otherwise = MyTrue; 9.86/4.03 9.86/4.03 } 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (5) Narrow (SOUND) 9.86/4.03 Haskell To QDPs 9.86/4.03 9.86/4.03 digraph dp_graph { 9.86/4.03 node [outthreshold=100, inthreshold=100];1[label="dropWhile",fontsize=16,color="grey",shape="box"];1 -> 3[label="",style="dashed", color="grey", weight=3]; 9.86/4.03 3[label="dropWhile wv3",fontsize=16,color="grey",shape="box"];3 -> 4[label="",style="dashed", color="grey", weight=3]; 9.86/4.03 4[label="dropWhile wv3 wv4",fontsize=16,color="burlywood",shape="triangle"];22[label="wv4/Cons wv40 wv41",fontsize=10,color="white",style="solid",shape="box"];4 -> 22[label="",style="solid", color="burlywood", weight=9]; 9.86/4.03 22 -> 5[label="",style="solid", color="burlywood", weight=3]; 9.86/4.03 23[label="wv4/Nil",fontsize=10,color="white",style="solid",shape="box"];4 -> 23[label="",style="solid", color="burlywood", weight=9]; 9.86/4.03 23 -> 6[label="",style="solid", color="burlywood", weight=3]; 9.86/4.03 5[label="dropWhile wv3 (Cons wv40 wv41)",fontsize=16,color="black",shape="box"];5 -> 7[label="",style="solid", color="black", weight=3]; 9.86/4.03 6[label="dropWhile wv3 Nil",fontsize=16,color="black",shape="box"];6 -> 8[label="",style="solid", color="black", weight=3]; 9.86/4.03 7[label="dropWhile2 wv3 (Cons wv40 wv41)",fontsize=16,color="black",shape="box"];7 -> 9[label="",style="solid", color="black", weight=3]; 9.86/4.03 8[label="dropWhile3 wv3 Nil",fontsize=16,color="black",shape="box"];8 -> 10[label="",style="solid", color="black", weight=3]; 9.86/4.03 9 -> 11[label="",style="dashed", color="red", weight=0]; 9.86/4.03 9[label="dropWhile1 wv3 wv40 wv41 (wv3 wv40)",fontsize=16,color="magenta"];9 -> 12[label="",style="dashed", color="magenta", weight=3]; 9.86/4.03 10[label="Nil",fontsize=16,color="green",shape="box"];12[label="wv3 wv40",fontsize=16,color="green",shape="box"];12 -> 16[label="",style="dashed", color="green", weight=3]; 9.86/4.03 11[label="dropWhile1 wv3 wv40 wv41 wv5",fontsize=16,color="burlywood",shape="triangle"];24[label="wv5/MyTrue",fontsize=10,color="white",style="solid",shape="box"];11 -> 24[label="",style="solid", color="burlywood", weight=9]; 9.86/4.03 24 -> 14[label="",style="solid", color="burlywood", weight=3]; 9.86/4.03 25[label="wv5/MyFalse",fontsize=10,color="white",style="solid",shape="box"];11 -> 25[label="",style="solid", color="burlywood", weight=9]; 9.86/4.03 25 -> 15[label="",style="solid", color="burlywood", weight=3]; 9.86/4.03 16[label="wv40",fontsize=16,color="green",shape="box"];14[label="dropWhile1 wv3 wv40 wv41 MyTrue",fontsize=16,color="black",shape="box"];14 -> 17[label="",style="solid", color="black", weight=3]; 9.86/4.03 15[label="dropWhile1 wv3 wv40 wv41 MyFalse",fontsize=16,color="black",shape="box"];15 -> 18[label="",style="solid", color="black", weight=3]; 9.86/4.03 17 -> 4[label="",style="dashed", color="red", weight=0]; 9.86/4.03 17[label="dropWhile wv3 wv41",fontsize=16,color="magenta"];17 -> 19[label="",style="dashed", color="magenta", weight=3]; 9.86/4.03 18[label="dropWhile0 wv3 wv40 wv41 otherwise",fontsize=16,color="black",shape="box"];18 -> 20[label="",style="solid", color="black", weight=3]; 9.86/4.03 19[label="wv41",fontsize=16,color="green",shape="box"];20[label="dropWhile0 wv3 wv40 wv41 MyTrue",fontsize=16,color="black",shape="box"];20 -> 21[label="",style="solid", color="black", weight=3]; 9.86/4.03 21[label="Cons wv40 wv41",fontsize=16,color="green",shape="box"];} 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (6) 9.86/4.03 Obligation: 9.86/4.03 Q DP problem: 9.86/4.03 The TRS P consists of the following rules: 9.86/4.03 9.86/4.03 new_dropWhile1(wv3, wv40, wv41, h) -> new_dropWhile(wv3, wv41, h) 9.86/4.03 new_dropWhile(wv3, Cons(wv40, wv41), h) -> new_dropWhile1(wv3, wv40, wv41, h) 9.86/4.03 9.86/4.03 R is empty. 9.86/4.03 Q is empty. 9.86/4.03 We have to consider all minimal (P,Q,R)-chains. 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (7) QDPSizeChangeProof (EQUIVALENT) 9.86/4.03 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. 9.86/4.03 9.86/4.03 From the DPs we obtained the following set of size-change graphs: 9.86/4.03 *new_dropWhile(wv3, Cons(wv40, wv41), h) -> new_dropWhile1(wv3, wv40, wv41, h) 9.86/4.03 The graph contains the following edges 1 >= 1, 2 > 2, 2 > 3, 3 >= 4 9.86/4.03 9.86/4.03 9.86/4.03 *new_dropWhile1(wv3, wv40, wv41, h) -> new_dropWhile(wv3, wv41, h) 9.86/4.03 The graph contains the following edges 1 >= 1, 3 >= 2, 4 >= 3 9.86/4.03 9.86/4.03 9.86/4.03 ---------------------------------------- 9.86/4.03 9.86/4.03 (8) 9.86/4.03 YES 9.91/4.06 EOF