9.39/4.72 YES 11.27/5.28 proof of /export/starexec/sandbox/benchmark/theBenchmark.hs 11.27/5.28 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 11.27/5.28 11.27/5.28 11.27/5.28 H-Termination with start terms of the given HASKELL could be proven: 11.27/5.28 11.27/5.28 (0) HASKELL 11.27/5.28 (1) CR [EQUIVALENT, 0 ms] 11.27/5.28 (2) HASKELL 11.27/5.28 (3) BR [EQUIVALENT, 0 ms] 11.27/5.28 (4) HASKELL 11.27/5.28 (5) COR [EQUIVALENT, 26 ms] 11.27/5.28 (6) HASKELL 11.27/5.28 (7) LetRed [EQUIVALENT, 0 ms] 11.27/5.28 (8) HASKELL 11.27/5.28 (9) Narrow [SOUND, 0 ms] 11.27/5.28 (10) QDP 11.27/5.28 (11) QDPSizeChangeProof [EQUIVALENT, 0 ms] 11.27/5.28 (12) YES 11.27/5.28 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (0) 11.27/5.28 Obligation: 11.27/5.28 mainModule Main 11.27/5.28 module Maybe where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 module List where { 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 minimumBy :: (a -> a -> Ordering) -> [a] -> a; 11.27/5.28 minimumBy _ [] = error []; 11.27/5.28 minimumBy cmp xs = foldl1 min xs where { 11.27/5.28 min x y = case cmp x y of { 11.27/5.28 GT-> y; 11.27/5.28 _-> x; 11.27/5.28 } ; 11.27/5.28 }; 11.27/5.28 11.27/5.28 } 11.27/5.28 module Main where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (1) CR (EQUIVALENT) 11.27/5.28 Case Reductions: 11.27/5.28 The following Case expression 11.27/5.28 "case cmp x y of { 11.27/5.28 GT -> y; 11.27/5.28 _ -> x} 11.27/5.28 " 11.27/5.28 is transformed to 11.27/5.28 "min0 y x GT = y; 11.27/5.28 min0 y x _ = x; 11.27/5.28 " 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (2) 11.27/5.28 Obligation: 11.27/5.28 mainModule Main 11.27/5.28 module Maybe where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 module List where { 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 minimumBy :: (a -> a -> Ordering) -> [a] -> a; 11.27/5.28 minimumBy _ [] = error []; 11.27/5.28 minimumBy cmp xs = foldl1 min xs where { 11.27/5.28 min x y = min0 y x (cmp x y); 11.27/5.28 min0 y x GT = y; 11.27/5.28 min0 y x _ = x; 11.27/5.28 }; 11.27/5.28 11.27/5.28 } 11.27/5.28 module Main where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (3) BR (EQUIVALENT) 11.27/5.28 Replaced joker patterns by fresh variables and removed binding patterns. 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (4) 11.27/5.28 Obligation: 11.27/5.28 mainModule Main 11.27/5.28 module Maybe where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 module List where { 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 minimumBy :: (a -> a -> Ordering) -> [a] -> a; 11.27/5.28 minimumBy vy [] = error []; 11.27/5.28 minimumBy cmp xs = foldl1 min xs where { 11.27/5.28 min x y = min0 y x (cmp x y); 11.27/5.28 min0 y x GT = y; 11.27/5.28 min0 y x vz = x; 11.27/5.28 }; 11.27/5.28 11.27/5.28 } 11.27/5.28 module Main where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (5) COR (EQUIVALENT) 11.27/5.28 Cond Reductions: 11.27/5.28 The following Function with conditions 11.27/5.28 "undefined |Falseundefined; 11.27/5.28 " 11.27/5.28 is transformed to 11.27/5.28 "undefined = undefined1; 11.27/5.28 " 11.27/5.28 "undefined0 True = undefined; 11.27/5.28 " 11.27/5.28 "undefined1 = undefined0 False; 11.27/5.28 " 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (6) 11.27/5.28 Obligation: 11.27/5.28 mainModule Main 11.27/5.28 module Maybe where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 module List where { 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 minimumBy :: (a -> a -> Ordering) -> [a] -> a; 11.27/5.28 minimumBy vy [] = error []; 11.27/5.28 minimumBy cmp xs = foldl1 min xs where { 11.27/5.28 min x y = min0 y x (cmp x y); 11.27/5.28 min0 y x GT = y; 11.27/5.28 min0 y x vz = x; 11.27/5.28 }; 11.27/5.28 11.27/5.28 } 11.27/5.28 module Main where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (7) LetRed (EQUIVALENT) 11.27/5.28 Let/Where Reductions: 11.27/5.28 The bindings of the following Let/Where expression 11.27/5.28 "foldl1 min xs where { 11.27/5.28 min x y = min0 y x (cmp x y); 11.27/5.28 ; 11.27/5.28 min0 y x GT = y; 11.27/5.28 min0 y x vz = x; 11.27/5.28 } 11.27/5.28 " 11.27/5.28 are unpacked to the following functions on top level 11.27/5.28 "minimumByMin0 wu y x GT = y; 11.27/5.28 minimumByMin0 wu y x vz = x; 11.27/5.28 " 11.27/5.28 "minimumByMin wu x y = minimumByMin0 wu y x (wu x y); 11.27/5.28 " 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (8) 11.27/5.28 Obligation: 11.27/5.28 mainModule Main 11.27/5.28 module Maybe where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 module List where { 11.27/5.28 import qualified Main; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 minimumBy :: (a -> a -> Ordering) -> [a] -> a; 11.27/5.28 minimumBy vy [] = error []; 11.27/5.28 minimumBy cmp xs = foldl1 (minimumByMin cmp) xs; 11.27/5.28 11.27/5.28 minimumByMin wu x y = minimumByMin0 wu y x (wu x y); 11.27/5.28 11.27/5.28 minimumByMin0 wu y x GT = y; 11.27/5.28 minimumByMin0 wu y x vz = x; 11.27/5.28 11.27/5.28 } 11.27/5.28 module Main where { 11.27/5.28 import qualified List; 11.27/5.28 import qualified Maybe; 11.27/5.28 import qualified Prelude; 11.27/5.28 } 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (9) Narrow (SOUND) 11.27/5.28 Haskell To QDPs 11.27/5.28 11.27/5.28 digraph dp_graph { 11.27/5.28 node [outthreshold=100, inthreshold=100];1[label="List.minimumBy",fontsize=16,color="grey",shape="box"];1 -> 3[label="",style="dashed", color="grey", weight=3]; 11.27/5.28 3[label="List.minimumBy wv3",fontsize=16,color="grey",shape="box"];3 -> 4[label="",style="dashed", color="grey", weight=3]; 11.27/5.28 4[label="List.minimumBy wv3 wv4",fontsize=16,color="burlywood",shape="triangle"];30[label="wv4/wv40 : wv41",fontsize=10,color="white",style="solid",shape="box"];4 -> 30[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 30 -> 5[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 31[label="wv4/[]",fontsize=10,color="white",style="solid",shape="box"];4 -> 31[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 31 -> 6[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 5[label="List.minimumBy wv3 (wv40 : wv41)",fontsize=16,color="black",shape="box"];5 -> 7[label="",style="solid", color="black", weight=3]; 11.27/5.28 6[label="List.minimumBy wv3 []",fontsize=16,color="black",shape="box"];6 -> 8[label="",style="solid", color="black", weight=3]; 11.27/5.28 7[label="foldl1 (List.minimumByMin wv3) (wv40 : wv41)",fontsize=16,color="black",shape="box"];7 -> 9[label="",style="solid", color="black", weight=3]; 11.27/5.28 8[label="error []",fontsize=16,color="black",shape="box"];8 -> 10[label="",style="solid", color="black", weight=3]; 11.27/5.28 9[label="foldl (List.minimumByMin wv3) wv40 wv41",fontsize=16,color="burlywood",shape="triangle"];32[label="wv41/wv410 : wv411",fontsize=10,color="white",style="solid",shape="box"];9 -> 32[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 32 -> 11[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 33[label="wv41/[]",fontsize=10,color="white",style="solid",shape="box"];9 -> 33[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 33 -> 12[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 10[label="error []",fontsize=16,color="red",shape="box"];11[label="foldl (List.minimumByMin wv3) wv40 (wv410 : wv411)",fontsize=16,color="black",shape="box"];11 -> 13[label="",style="solid", color="black", weight=3]; 11.27/5.28 12[label="foldl (List.minimumByMin wv3) wv40 []",fontsize=16,color="black",shape="box"];12 -> 14[label="",style="solid", color="black", weight=3]; 11.27/5.28 13 -> 9[label="",style="dashed", color="red", weight=0]; 11.27/5.28 13[label="foldl (List.minimumByMin wv3) (List.minimumByMin wv3 wv40 wv410) wv411",fontsize=16,color="magenta"];13 -> 15[label="",style="dashed", color="magenta", weight=3]; 11.27/5.28 13 -> 16[label="",style="dashed", color="magenta", weight=3]; 11.27/5.28 14[label="wv40",fontsize=16,color="green",shape="box"];15[label="wv411",fontsize=16,color="green",shape="box"];16[label="List.minimumByMin wv3 wv40 wv410",fontsize=16,color="black",shape="box"];16 -> 17[label="",style="solid", color="black", weight=3]; 11.27/5.28 17 -> 18[label="",style="dashed", color="red", weight=0]; 11.27/5.28 17[label="List.minimumByMin0 wv3 wv410 wv40 (wv3 wv40 wv410)",fontsize=16,color="magenta"];17 -> 19[label="",style="dashed", color="magenta", weight=3]; 11.27/5.28 19[label="wv3 wv40 wv410",fontsize=16,color="green",shape="box"];19 -> 25[label="",style="dashed", color="green", weight=3]; 11.27/5.28 19 -> 26[label="",style="dashed", color="green", weight=3]; 11.27/5.28 18[label="List.minimumByMin0 wv3 wv410 wv40 wv5",fontsize=16,color="burlywood",shape="triangle"];34[label="wv5/LT",fontsize=10,color="white",style="solid",shape="box"];18 -> 34[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 34 -> 22[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 35[label="wv5/EQ",fontsize=10,color="white",style="solid",shape="box"];18 -> 35[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 35 -> 23[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 36[label="wv5/GT",fontsize=10,color="white",style="solid",shape="box"];18 -> 36[label="",style="solid", color="burlywood", weight=9]; 11.27/5.28 36 -> 24[label="",style="solid", color="burlywood", weight=3]; 11.27/5.28 25[label="wv40",fontsize=16,color="green",shape="box"];26[label="wv410",fontsize=16,color="green",shape="box"];22[label="List.minimumByMin0 wv3 wv410 wv40 LT",fontsize=16,color="black",shape="box"];22 -> 27[label="",style="solid", color="black", weight=3]; 11.27/5.28 23[label="List.minimumByMin0 wv3 wv410 wv40 EQ",fontsize=16,color="black",shape="box"];23 -> 28[label="",style="solid", color="black", weight=3]; 11.27/5.28 24[label="List.minimumByMin0 wv3 wv410 wv40 GT",fontsize=16,color="black",shape="box"];24 -> 29[label="",style="solid", color="black", weight=3]; 11.27/5.28 27[label="wv40",fontsize=16,color="green",shape="box"];28[label="wv40",fontsize=16,color="green",shape="box"];29[label="wv410",fontsize=16,color="green",shape="box"];} 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (10) 11.27/5.28 Obligation: 11.27/5.28 Q DP problem: 11.27/5.28 The TRS P consists of the following rules: 11.27/5.28 11.27/5.28 new_foldl(wv3, :(wv410, wv411), ba) -> new_foldl(wv3, wv411, ba) 11.27/5.28 11.27/5.28 R is empty. 11.27/5.28 Q is empty. 11.27/5.28 We have to consider all minimal (P,Q,R)-chains. 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (11) QDPSizeChangeProof (EQUIVALENT) 11.27/5.28 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. 11.27/5.28 11.27/5.28 From the DPs we obtained the following set of size-change graphs: 11.27/5.28 *new_foldl(wv3, :(wv410, wv411), ba) -> new_foldl(wv3, wv411, ba) 11.27/5.28 The graph contains the following edges 1 >= 1, 2 > 2, 3 >= 3 11.27/5.28 11.27/5.28 11.27/5.28 ---------------------------------------- 11.27/5.28 11.27/5.28 (12) 11.27/5.28 YES 11.47/5.36 EOF