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(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0)) → mark(0)
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0)) → mark(0)
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0, X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0, X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0) → ok(0)
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(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
terms(mark(X)) →⁺ mark(terms(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(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(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(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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, recip, sqr, terms, s, add, dbl, first, proper, top

They will be analysed ascendingly in the following order:
cons < active
recip < active
sqr < active
terms < active
s < active
add < active
dbl < active
first < active
active < top
cons < proper
recip < proper
sqr < proper
terms < proper
s < proper
add < proper
dbl < proper
first < proper
proper < top

(8) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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, recip, sqr, terms, s, add, dbl, first, proper, top

They will be analysed ascendingly in the following order:
cons < active
recip < active
sqr < active
terms < active
s < active
add < active
dbl < active
first < active
active < top
cons < proper
recip < proper
sqr < proper
terms < proper
s < proper
add < proper
dbl < proper
first < proper
proper < top

(9) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(10) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
recip, active, sqr, terms, s, add, dbl, first, proper, top

They will be analysed ascendingly in the following order:
recip < active
sqr < active
terms < active
s < active
add < active
dbl < active
first < active
active < top
recip < proper
sqr < proper
terms < proper
s < proper
add < proper
dbl < proper
first < proper
proper < top

(11) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(12) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
sqr, active, terms, s, add, dbl, first, proper, top

They will be analysed ascendingly in the following order:
sqr < active
terms < active
s < active
add < active
dbl < active
first < active
active < top
sqr < proper
terms < proper
s < proper
add < proper
dbl < proper
first < proper
proper < top

(13) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(14) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
terms, active, s, add, dbl, first, proper, top

They will be analysed ascendingly in the following order:
terms < active
s < active
add < active
dbl < active
first < active
active < top
terms < proper
s < proper
add < proper
dbl < proper
first < proper
proper < top

(15) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(16) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
s, active, add, dbl, first, proper, top

They will be analysed ascendingly in the following order:
s < active
add < active
dbl < active
first < active
active < top
s < proper
add < proper
dbl < proper
first < proper
proper < top

(17) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(18) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
add, active, dbl, first, proper, top

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

(19) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(20) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
dbl, active, first, proper, top

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

(21) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(22) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
first, active, proper, top

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

(23) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(24) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
active, proper, top

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

(25) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(26) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
proper, top

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

(27) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(28) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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:
top

(29) NoRewriteLemmaProof (LOWER BOUND(ID) transformation)

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

(30) Obligation:

TRS:
Rules:
active(terms(N)) → mark(cons(recip(sqr(N)), terms(s(N))))
active(sqr(0')) → mark(0')
active(sqr(s(X))) → mark(s(add(sqr(X), dbl(X))))
active(dbl(0')) → mark(0')
active(dbl(s(X))) → mark(s(s(dbl(X))))
active(add(0', X)) → mark(X)
active(add(s(X), Y)) → mark(s(add(X, Y)))
active(first(0', X)) → mark(nil)
active(first(s(X), cons(Y, Z))) → mark(cons(Y, first(X, Z)))
active(terms(X)) → terms(active(X))
active(cons(X1, X2)) → cons(active(X1), X2)
active(recip(X)) → recip(active(X))
active(sqr(X)) → sqr(active(X))
active(s(X)) → s(active(X))
active(add(X1, X2)) → add(active(X1), X2)
active(add(X1, X2)) → add(X1, active(X2))
active(dbl(X)) → dbl(active(X))
active(first(X1, X2)) → first(active(X1), X2)
active(first(X1, X2)) → first(X1, active(X2))
terms(mark(X)) → mark(terms(X))
cons(mark(X1), X2) → mark(cons(X1, X2))
recip(mark(X)) → mark(recip(X))
sqr(mark(X)) → mark(sqr(X))
s(mark(X)) → mark(s(X))
add(mark(X1), X2) → mark(add(X1, X2))
add(X1, mark(X2)) → mark(add(X1, X2))
dbl(mark(X)) → mark(dbl(X))
first(mark(X1), X2) → mark(first(X1, X2))
first(X1, mark(X2)) → mark(first(X1, X2))
proper(terms(X)) → terms(proper(X))
proper(cons(X1, X2)) → cons(proper(X1), proper(X2))
proper(recip(X)) → recip(proper(X))
proper(sqr(X)) → sqr(proper(X))
proper(s(X)) → s(proper(X))
proper(0') → ok(0')
proper(add(X1, X2)) → add(proper(X1), proper(X2))
proper(dbl(X)) → dbl(proper(X))
proper(first(X1, X2)) → first(proper(X1), proper(X2))
proper(nil) → ok(nil)
terms(ok(X)) → ok(terms(X))
cons(ok(X1), ok(X2)) → ok(cons(X1, X2))
recip(ok(X)) → ok(recip(X))
sqr(ok(X)) → ok(sqr(X))
s(ok(X)) → ok(s(X))
add(ok(X1), ok(X2)) → ok(add(X1, X2))
dbl(ok(X)) → ok(dbl(X))
first(ok(X1), ok(X2)) → ok(first(X1, X2))
top(mark(X)) → top(proper(X))
top(ok(X)) → top(active(X))

Types:
active :: mark:0':nil:ok → mark:0':nil:ok
terms :: 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
recip :: mark:0':nil:ok → mark:0':nil:ok
sqr :: mark:0':nil:ok → mark:0':nil:ok
s :: mark:0':nil:ok → mark:0':nil:ok
0' :: mark:0':nil:ok
add :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
dbl :: mark:0':nil:ok → mark:0':nil:ok
first :: mark:0':nil:ok → mark:0':nil:ok → mark:0':nil:ok
nil :: 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))

No more defined symbols left to analyse.