The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF).

(0) Obligation:

Runtime Complexity TRS:
The TRS R consists of the following rules:

active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0, XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0) → ok(0)
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Rewrite Strategy: FULL

(1) DecreasingLoopProof (EQUIVALENT transformation)

The following loop(s) give(s) rise to the lower bound Ω(n¹):
The rewrite sequence
natsFrom(mark(X)) →⁺ mark(natsFrom(X))
gives rise to a decreasing loop by considering the right hand sides subterm at position [0].
The pumping substitution is [X / mark(X)].
The result substitution is [ ].

(2) BOUNDS(n^1, INF)

(3) RenamingProof (EQUIVALENT transformation)

Renamed function symbols to avoid clashes with predefined symbol.

(4) Obligation:

Runtime Complexity Relative TRS:
The TRS R consists of the following rules:

active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

S is empty.
Rewrite Strategy: FULL

(5) TypeInferenceProof (BOTH BOUNDS(ID, ID) transformation)

Infered types.

(6) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

(7) OrderProof (LOWER BOUND(ID) transformation)

Heuristically decided to analyse the following defined symbols:
active, cons, natsFrom, s, pair, u, splitAt, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
cons < active
natsFrom < active
s < active
pair < active
u < active
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
cons < proper
natsFrom < proper
s < proper
pair < proper
u < proper
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(8) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
cons, active, natsFrom, s, pair, u, splitAt, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
cons < active
natsFrom < active
s < active
pair < active
u < active
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
cons < proper
natsFrom < proper
s < proper
pair < proper
u < proper
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(9) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)

Induction Base:
cons(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b))

Induction Step:
cons(gen_mark:0':nil:ok3_0(+(1, +(n5_0, 1))), gen_mark:0':nil:ok3_0(b)) →_R^Ω(1)
mark(cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(10) Complex Obligation (BEST)

(11) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
natsFrom, active, s, pair, u, splitAt, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
natsFrom < active
s < active
pair < active
u < active
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
natsFrom < proper
s < proper
pair < proper
u < proper
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(12) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)

Induction Base:
natsFrom(gen_mark:0':nil:ok3_0(+(1, 0)))

Induction Step:
natsFrom(gen_mark:0':nil:ok3_0(+(1, +(n1466_0, 1)))) →_R^Ω(1)
mark(natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0)))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(13) Complex Obligation (BEST)

(14) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
s, active, pair, u, splitAt, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
s < active
pair < active
u < active
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
s < proper
pair < proper
u < proper
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(15) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)

Induction Base:
s(gen_mark:0':nil:ok3_0(+(1, 0)))

Induction Step:
s(gen_mark:0':nil:ok3_0(+(1, +(n2114_0, 1)))) →_R^Ω(1)
mark(s(gen_mark:0':nil:ok3_0(+(1, n2114_0)))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(16) Complex Obligation (BEST)

(17) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
pair, active, u, splitAt, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
pair < active
u < active
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
pair < proper
u < proper
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(18) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)

Induction Base:
pair(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b))

Induction Step:
pair(gen_mark:0':nil:ok3_0(+(1, +(n2863_0, 1))), gen_mark:0':nil:ok3_0(b)) →_R^Ω(1)
mark(pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(19) Complex Obligation (BEST)

(20) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
u, active, splitAt, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
u < active
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
u < proper
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(21) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)

Induction Base:
u(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d))

Induction Step:
u(gen_mark:0':nil:ok3_0(+(1, +(n5239_0, 1))), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) →_R^Ω(1)
mark(u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(22) Complex Obligation (BEST)

(23) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
splitAt, active, head, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
splitAt < active
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
splitAt < proper
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(24) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)

Induction Base:
splitAt(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b))

Induction Step:
splitAt(gen_mark:0':nil:ok3_0(+(1, +(n11098_0, 1))), gen_mark:0':nil:ok3_0(b)) →_R^Ω(1)
mark(splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(25) Complex Obligation (BEST)

(26) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
head, active, afterNth, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
head < active
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
head < proper
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(27) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)

Induction Base:
head(gen_mark:0':nil:ok3_0(+(1, 0)))

Induction Step:
head(gen_mark:0':nil:ok3_0(+(1, +(n14278_0, 1)))) →_R^Ω(1)
mark(head(gen_mark:0':nil:ok3_0(+(1, n14278_0)))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(28) Complex Obligation (BEST)

(29) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
afterNth, active, fst, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
afterNth < active
fst < active
snd < active
tail < active
sel < active
take < active
active < top
afterNth < proper
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(30) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)

Induction Base:
afterNth(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b))

Induction Step:
afterNth(gen_mark:0':nil:ok3_0(+(1, +(n15676_0, 1))), gen_mark:0':nil:ok3_0(b)) →_R^Ω(1)
mark(afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(31) Complex Obligation (BEST)

(32) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
fst, active, snd, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
fst < active
snd < active
tail < active
sel < active
take < active
active < top
fst < proper
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(33) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)

Induction Base:
fst(gen_mark:0':nil:ok3_0(+(1, 0)))

Induction Step:
fst(gen_mark:0':nil:ok3_0(+(1, +(n19366_0, 1)))) →_R^Ω(1)
mark(fst(gen_mark:0':nil:ok3_0(+(1, n19366_0)))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(34) Complex Obligation (BEST)

(35) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
snd, active, tail, sel, take, proper, top

They will be analysed ascendingly in the following order:
snd < active
tail < active
sel < active
take < active
active < top
snd < proper
tail < proper
sel < proper
take < proper
proper < top

(36) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)

Induction Base:
snd(gen_mark:0':nil:ok3_0(+(1, 0)))

Induction Step:
snd(gen_mark:0':nil:ok3_0(+(1, +(n21015_0, 1)))) →_R^Ω(1)
mark(snd(gen_mark:0':nil:ok3_0(+(1, n21015_0)))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(37) Complex Obligation (BEST)

(38) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
tail, active, sel, take, proper, top

They will be analysed ascendingly in the following order:
tail < active
sel < active
take < active
active < top
tail < proper
sel < proper
take < proper
proper < top

(39) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)

Induction Base:
tail(gen_mark:0':nil:ok3_0(+(1, 0)))

Induction Step:
tail(gen_mark:0':nil:ok3_0(+(1, +(n22765_0, 1)))) →_R^Ω(1)
mark(tail(gen_mark:0':nil:ok3_0(+(1, n22765_0)))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(40) Complex Obligation (BEST)

(41) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
sel, active, take, proper, top

They will be analysed ascendingly in the following order:
sel < active
take < active
active < top
sel < proper
take < proper
proper < top

(42) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)

Induction Base:
sel(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b))

Induction Step:
sel(gen_mark:0':nil:ok3_0(+(1, +(n24616_0, 1))), gen_mark:0':nil:ok3_0(b)) →_R^Ω(1)
mark(sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(43) Complex Obligation (BEST)

(44) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
take, active, proper, top

They will be analysed ascendingly in the following order:
take < active
active < top
take < proper
proper < top

(45) RewriteLemmaProof (LOWER BOUND(ID) transformation)

Proved the following rewrite lemma:
take(gen_mark:0':nil:ok3_0(+(1, n29228_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n29228₀)

Induction Base:
take(gen_mark:0':nil:ok3_0(+(1, 0)), gen_mark:0':nil:ok3_0(b))

Induction Step:
take(gen_mark:0':nil:ok3_0(+(1, +(n29228_0, 1))), gen_mark:0':nil:ok3_0(b)) →_R^Ω(1)
mark(take(gen_mark:0':nil:ok3_0(+(1, n29228_0)), gen_mark:0':nil:ok3_0(b))) →_IH
mark(*4_0)

We have rt ∈ Ω(n¹) and sz ∈ O(n). Thus, we have irc_R ∈ Ω(n).

(46) Complex Obligation (BEST)

(47) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)
take(gen_mark:0':nil:ok3_0(+(1, n29228_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n29228₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
active, proper, top

They will be analysed ascendingly in the following order:
active < top
proper < top

(48) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

Could not prove a rewrite lemma for the defined symbol active.

(49) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)
take(gen_mark:0':nil:ok3_0(+(1, n29228_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n29228₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
proper, top

They will be analysed ascendingly in the following order:
proper < top

(50) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

Could not prove a rewrite lemma for the defined symbol proper.

(51) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)
take(gen_mark:0':nil:ok3_0(+(1, n29228_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n29228₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

The following defined symbols remain to be analysed:
top

(52) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)
take(gen_mark:0':nil:ok3_0(+(1, n29228_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n29228₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(53) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)
sel(gen_mark:0':nil:ok3_0(+(1, n24616_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n24616₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(54) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)
tail(gen_mark:0':nil:ok3_0(+(1, n22765_0))) → *4_0, rt ∈ Ω(n22765₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(55) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)
snd(gen_mark:0':nil:ok3_0(+(1, n21015_0))) → *4_0, rt ∈ Ω(n21015₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(56) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)
fst(gen_mark:0':nil:ok3_0(+(1, n19366_0))) → *4_0, rt ∈ Ω(n19366₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(57) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)
afterNth(gen_mark:0':nil:ok3_0(+(1, n15676_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n15676₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(58) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)
head(gen_mark:0':nil:ok3_0(+(1, n14278_0))) → *4_0, rt ∈ Ω(n14278₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(59) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)
splitAt(gen_mark:0':nil:ok3_0(+(1, n11098_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n11098₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(60) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)
u(gen_mark:0':nil:ok3_0(+(1, n5239_0)), gen_mark:0':nil:ok3_0(b), gen_mark:0':nil:ok3_0(c), gen_mark:0':nil:ok3_0(d)) → *4_0, rt ∈ Ω(n5239₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(61) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)
pair(gen_mark:0':nil:ok3_0(+(1, n2863_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n2863₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(62) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)
s(gen_mark:0':nil:ok3_0(+(1, n2114_0))) → *4_0, rt ∈ Ω(n2114₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(63) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)
natsFrom(gen_mark:0':nil:ok3_0(+(1, n1466_0))) → *4_0, rt ∈ Ω(n1466₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.

(64) Obligation:

TRS:
Rules:
active(natsFrom(N)) → mark(cons(N, natsFrom(s(N))))
active(fst(pair(XS, YS))) → mark(XS)
active(snd(pair(XS, YS))) → mark(YS)
active(splitAt(0', XS)) → mark(pair(nil, XS))
active(splitAt(s(N), cons(X, XS))) → mark(u(splitAt(N, XS), N, X, XS))
active(u(pair(YS, ZS), N, X, XS)) → mark(pair(cons(X, YS), ZS))
active(head(cons(N, XS))) → mark(N)
active(tail(cons(N, XS))) → mark(XS)
active(sel(N, XS)) → mark(head(afterNth(N, XS)))
active(take(N, XS)) → mark(fst(splitAt(N, XS)))
active(afterNth(N, XS)) → mark(snd(splitAt(N, XS)))
active(natsFrom(X)) → natsFrom(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(s(X)) → s(active(X))
active(fst(X)) → fst(active(X))
active(pair(X1, X2)) → pair(active(X1), X2)
active(pair(X1, X2)) → pair(X1, active(X2))
active(snd(X)) → snd(active(X))
active(splitAt(X1, X2)) → splitAt(active(X1), X2)
active(splitAt(X1, X2)) → splitAt(X1, active(X2))
active(u(X1, X2, X3, X4)) → u(active(X1), X2, X3, X4)
active(head(X)) → head(active(X))
active(tail(X)) → tail(active(X))
active(sel(X1, X2)) → sel(active(X1), X2)
active(sel(X1, X2)) → sel(X1, active(X2))
active(afterNth(X1, X2)) → afterNth(active(X1), X2)
active(afterNth(X1, X2)) → afterNth(X1, active(X2))
active(take(X1, X2)) → take(active(X1), X2)
active(take(X1, X2)) → take(X1, active(X2))
natsFrom(mark(X)) → mark(natsFrom(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
s(mark(X)) → mark(s(X))
fst(mark(X)) → mark(fst(X))
pair(mark(X1), X2) → mark(pair(X1, X2))
pair(X1, mark(X2)) → mark(pair(X1, X2))
snd(mark(X)) → mark(snd(X))
splitAt(mark(X1), X2) → mark(splitAt(X1, X2))
splitAt(X1, mark(X2)) → mark(splitAt(X1, X2))
u(mark(X1), X2, X3, X4) → mark(u(X1, X2, X3, X4))
head(mark(X)) → mark(head(X))
tail(mark(X)) → mark(tail(X))
sel(mark(X1), X2) → mark(sel(X1, X2))
sel(X1, mark(X2)) → mark(sel(X1, X2))
afterNth(mark(X1), X2) → mark(afterNth(X1, X2))
afterNth(X1, mark(X2)) → mark(afterNth(X1, X2))
take(mark(X1), X2) → mark(take(X1, X2))
take(X1, mark(X2)) → mark(take(X1, X2))
proper(natsFrom(X)) → natsFrom(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(s(X)) → s(proper(X))
proper(fst(X)) → fst(proper(X))
proper(pair(X1, X2)) → pair(proper(X1), proper(X2))
proper(snd(X)) → snd(proper(X))
proper(splitAt(X1, X2)) → splitAt(proper(X1), proper(X2))
proper(0') → ok(0')
proper(nil) → ok(nil)
proper(u(X1, X2, X3, X4)) → u(proper(X1), proper(X2), proper(X3), proper(X4))
proper(head(X)) → head(proper(X))
proper(tail(X)) → tail(proper(X))
proper(sel(X1, X2)) → sel(proper(X1), proper(X2))
proper(afterNth(X1, X2)) → afterNth(proper(X1), proper(X2))
proper(take(X1, X2)) → take(proper(X1), proper(X2))
natsFrom(ok(X)) → ok(natsFrom(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
s(ok(X)) → ok(s(X))
fst(ok(X)) → ok(fst(X))
pair(ok(X1), ok(X2)) → ok(pair(X1, X2))
snd(ok(X)) → ok(snd(X))
splitAt(ok(X1), ok(X2)) → ok(splitAt(X1, X2))
u(ok(X1), ok(X2), ok(X3), ok(X4)) → ok(u(X1, X2, X3, X4))
head(ok(X)) → ok(head(X))
tail(ok(X)) → ok(tail(X))
sel(ok(X1), ok(X2)) → ok(sel(X1, X2))
afterNth(ok(X1), ok(X2)) → ok(afterNth(X1, X2))
take(ok(X1), ok(X2)) → ok(take(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
natsFrom :: mark:0':nil:ok → mark:0':nil:ok
mark :: mark:0':nil:ok → mark:0':nil:ok
cons :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
fst :: mark:0':nil:ok → mark:0':nil:ok
pair :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
snd :: mark:0':nil:ok → mark:0':nil:ok
splitAt :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
nil :: mark:0':nil:ok
u :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
head :: mark:0':nil:ok → mark:0':nil:ok
tail :: mark:0':nil:ok → mark:0':nil:ok
sel :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
afterNth :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
take :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
proper :: mark:0':nil:ok → mark:0':nil:ok
ok :: mark:0':nil:ok → mark:0':nil:ok
top :: mark:0':nil:ok → top
hole_mark:0':nil:ok1_0 :: mark:0':nil:ok
hole_top2_0 :: top
gen_mark:0':nil:ok3_0 :: Nat → mark:0':nil:ok

Lemmas:
cons(gen_mark:0':nil:ok3_0(+(1, n5_0)), gen_mark:0':nil:ok3_0(b)) → *4_0, rt ∈ Ω(n5₀)

Generator Equations:
gen_mark:0':nil:ok3_0(0) ⇔ 0'
gen_mark:0':nil:ok3_0(+(x, 1)) ⇔ mark(gen_mark:0':nil:ok3_0(x))

No more defined symbols left to analyse.