MAYBE 1.58
H-Termination proof of /home/matraf/haskell/eval_FullyBlown_Fast/Monad.hs
H-Termination of the given Haskell-Program with start terms could not be shown:
↳ HASKELL
↳ LR
mainModule Monad
| ((zipWithM :: (a -> b -> [c]) -> [a] -> [b] -> [[c]]) :: (a -> b -> [c]) -> [a] -> [b] -> [[c]]) |
module Monad where
| import qualified Maybe import qualified Prelude
|
| zipWithM :: Monad a => (b -> c -> a d) -> [b] -> [c] -> a [d]
zipWithM | f xs ys | = | sequence (zipWith f xs ys) |
|
module Maybe where
| import qualified Monad import qualified Prelude
|
Lambda Reductions:
The following Lambda expression
\xs→return (x : xs)
is transformed to
sequence0 | x xs | = return (x : xs) |
The following Lambda expression
\x→sequence cs >>= sequence0 x
is transformed to
sequence1 | cs x | = sequence cs >>= sequence0 x |
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
mainModule Monad
| ((zipWithM :: (a -> c -> [b]) -> [a] -> [c] -> [[b]]) :: (a -> c -> [b]) -> [a] -> [c] -> [[b]]) |
module Maybe where
| import qualified Monad import qualified Prelude
|
module Monad where
| import qualified Maybe import qualified Prelude
|
| zipWithM :: Monad a => (b -> c -> a d) -> [b] -> [c] -> a [d]
zipWithM | f xs ys | = | sequence (zipWith f xs ys) |
|
Replaced joker patterns by fresh variables and removed binding patterns.
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
mainModule Monad
| ((zipWithM :: (c -> b -> [a]) -> [c] -> [b] -> [[a]]) :: (c -> b -> [a]) -> [c] -> [b] -> [[a]]) |
module Monad where
| import qualified Maybe import qualified Prelude
|
| zipWithM :: Monad c => (d -> a -> c b) -> [d] -> [a] -> c [b]
zipWithM | f xs ys | = | sequence (zipWith f xs ys) |
|
module Maybe where
| import qualified Monad import qualified Prelude
|
Cond Reductions:
The following Function with conditions
is transformed to
undefined0 | True | = undefined |
undefined1 | | = undefined0 False |
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ Narrow
mainModule Monad
| (zipWithM :: (a -> b -> [c]) -> [a] -> [b] -> [[c]]) |
module Maybe where
| import qualified Monad import qualified Prelude
|
module Monad where
| import qualified Maybe import qualified Prelude
|
| zipWithM :: Monad d => (a -> c -> d b) -> [a] -> [c] -> d [b]
zipWithM | f xs ys | = | sequence (zipWith f xs ys) |
|
Haskell To QDPs
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDPSizeChangeProof
↳ QDP
↳ QDP
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_psPs(:(wv90, wv91), wv7, h) → new_psPs(wv91, wv7, h)
R is empty.
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the subterm criterion [20] together with the size-change analysis [32] we have proven that there are no infinite chains for this DP problem. From the DPs we obtained the following set of size-change graphs:
- new_psPs(:(wv90, wv91), wv7, h) → new_psPs(wv91, wv7, h)
The graph contains the following edges 1 > 1, 2 >= 2, 3 >= 3
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDP
↳ QDPSizeChangeProof
↳ QDP
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_gtGtEs(:(wv810, wv811), wv60, h) → new_gtGtEs(wv811, wv60, h)
R is empty.
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the subterm criterion [20] together with the size-change analysis [32] we have proven that there are no infinite chains for this DP problem. From the DPs we obtained the following set of size-change graphs:
- new_gtGtEs(:(wv810, wv811), wv60, h) → new_gtGtEs(wv811, wv60, h)
The graph contains the following edges 1 > 1, 2 >= 2, 3 >= 3
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ UsableRulesProof
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_psPs0(wv3, wv41, wv51, h, ba, bb)
new_sequence(wv3, :(wv40, wv41), :(wv50, wv51), h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_psPs0(wv3, wv41, wv51, h, ba, bb) → new_sequence(wv3, wv41, wv51, h, ba, bb)
The TRS R consists of the following rules:
new_psPs3(wv60, wv80, wv9, wv7, h) → :(:(wv60, wv80), new_psPs1(wv9, wv7, h))
new_gtGtEs1(:(wv60, wv61), wv3, wv41, wv51, h, ba, bb) → new_psPs5(wv3, wv41, wv51, wv60, new_gtGtEs1(wv61, wv3, wv41, wv51, h, ba, bb), h, ba, bb)
new_psPs1([], wv7, h) → wv7
new_psPs2(:(wv80, wv81), wv60, wv7, h) → new_psPs3(wv60, wv80, new_psPs4(new_gtGtEs2(wv81, wv60, h), h), wv7, h)
new_gtGtEs1([], wv3, wv41, wv51, h, ba, bb) → []
new_gtGtEs2(:(wv810, wv811), wv60, h) → new_psPs1(:(:(wv60, wv810), []), new_gtGtEs2(wv811, wv60, h), h)
new_gtGtEs2([], wv60, h) → []
new_psPs1(:(wv90, wv91), wv7, h) → :(wv90, new_psPs1(wv91, wv7, h))
new_psPs2([], wv60, wv7, h) → new_psPs4(wv7, h)
new_psPs5(wv3, wv41, wv51, wv60, wv7, h, ba, bb) → new_psPs2(new_sequence0(wv3, wv41, wv51, h, ba, bb), wv60, wv7, h)
new_psPs4(wv7, h) → wv7
The set Q consists of the following terms:
new_gtGtEs1([], x0, x1, x2, x3, x4, x5)
new_psPs1(:(x0, x1), x2, x3)
new_psPs2([], x0, x1, x2)
new_psPs5(x0, x1, x2, x3, x4, x5, x6, x7)
new_gtGtEs1(:(x0, x1), x2, x3, x4, x5, x6, x7)
new_psPs1([], x0, x1)
new_psPs3(x0, x1, x2, x3, x4)
new_psPs4(x0, x1)
new_gtGtEs2([], x0, x1)
new_gtGtEs2(:(x0, x1), x2, x3)
new_psPs2(:(x0, x1), x2, x3, x4)
We have to consider all minimal (P,Q,R)-chains.
As all Q-normal forms are R-normal forms we are in the innermost case. Hence, by the usable rules processor [15] we can delete all non-usable rules [17] from R.
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ UsableRulesProof
↳ QDP
↳ QReductionProof
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_psPs0(wv3, wv41, wv51, h, ba, bb)
new_sequence(wv3, :(wv40, wv41), :(wv50, wv51), h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_psPs0(wv3, wv41, wv51, h, ba, bb) → new_sequence(wv3, wv41, wv51, h, ba, bb)
R is empty.
The set Q consists of the following terms:
new_gtGtEs1([], x0, x1, x2, x3, x4, x5)
new_psPs1(:(x0, x1), x2, x3)
new_psPs2([], x0, x1, x2)
new_psPs5(x0, x1, x2, x3, x4, x5, x6, x7)
new_gtGtEs1(:(x0, x1), x2, x3, x4, x5, x6, x7)
new_psPs1([], x0, x1)
new_psPs3(x0, x1, x2, x3, x4)
new_psPs4(x0, x1)
new_gtGtEs2([], x0, x1)
new_gtGtEs2(:(x0, x1), x2, x3)
new_psPs2(:(x0, x1), x2, x3, x4)
We have to consider all minimal (P,Q,R)-chains.
We deleted the following terms from Q as each root-symbol of these terms does neither occur in P nor in R.
new_gtGtEs1([], x0, x1, x2, x3, x4, x5)
new_psPs1(:(x0, x1), x2, x3)
new_psPs2([], x0, x1, x2)
new_psPs5(x0, x1, x2, x3, x4, x5, x6, x7)
new_gtGtEs1(:(x0, x1), x2, x3, x4, x5, x6, x7)
new_psPs1([], x0, x1)
new_psPs3(x0, x1, x2, x3, x4)
new_psPs4(x0, x1)
new_gtGtEs2([], x0, x1)
new_gtGtEs2(:(x0, x1), x2, x3)
new_psPs2(:(x0, x1), x2, x3, x4)
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ UsableRulesProof
↳ QDP
↳ QReductionProof
↳ QDP
↳ UsableRulesReductionPairsProof
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_sequence(wv3, :(wv40, wv41), :(wv50, wv51), h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_psPs0(wv3, wv41, wv51, h, ba, bb)
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_psPs0(wv3, wv41, wv51, h, ba, bb) → new_sequence(wv3, wv41, wv51, h, ba, bb)
R is empty.
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the usable rules with reduction pair processor [15] with a polynomial ordering [25], all dependency pairs and the corresponding usable rules [17] can be oriented non-strictly. All non-usable rules are removed, and those dependency pairs and usable rules that have been oriented strictly or contain non-usable symbols in their left-hand side are removed as well.
The following dependency pairs can be deleted:
new_sequence(wv3, :(wv40, wv41), :(wv50, wv51), h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_psPs0(wv3, wv41, wv51, h, ba, bb)
No rules are removed from R.
Used ordering: POLO with Polynomial interpretation [25]:
POL(:(x1, x2)) = 1 + x1 + 2·x2
POL(new_gtGtEs0(x1, x2, x3, x4, x5, x6)) = 1 + x1 + 2·x2 + 2·x3 + x4 + x5 + x6
POL(new_psPs0(x1, x2, x3, x4, x5, x6)) = x1 + x2 + 2·x3 + x4 + x5 + x6
POL(new_sequence(x1, x2, x3, x4, x5, x6)) = x1 + x2 + x3 + x4 + x5 + x6
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ UsableRulesProof
↳ QDP
↳ QReductionProof
↳ QDP
↳ UsableRulesReductionPairsProof
↳ QDP
↳ DependencyGraphProof
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
new_psPs0(wv3, wv41, wv51, h, ba, bb) → new_sequence(wv3, wv41, wv51, h, ba, bb)
R is empty.
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 1 less node.
↳ HASKELL
↳ LR
↳ HASKELL
↳ BR
↳ HASKELL
↳ COR
↳ HASKELL
↳ Narrow
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ UsableRulesProof
↳ QDP
↳ QReductionProof
↳ QDP
↳ UsableRulesReductionPairsProof
↳ QDP
↳ DependencyGraphProof
↳ QDP
↳ NonTerminationProof
↳ Narrow
Q DP problem:
The TRS P consists of the following rules:
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
R is empty.
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We used the non-termination processor [17] to show that the DP problem is infinite.
Found a loop by semiunifying a rule from P directly.
The TRS P consists of the following rules:
new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) → new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
The TRS R consists of the following rules:none
s = new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) evaluates to t =new_gtGtEs0(wv3, wv41, wv51, h, ba, bb)
Thus s starts an infinite chain as s semiunifies with t with the following substitutions:
- Semiunifier: [ ]
- Matcher: [ ]
Rewriting sequence
The DP semiunifies directly so there is only one rewrite step from new_gtGtEs0(wv3, wv41, wv51, h, ba, bb) to new_gtGtEs0(wv3, wv41, wv51, h, ba, bb).
Haskell To QDPs