The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(1, 1).

(0) Obligation:

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

d(x) → e(u(x))
d(u(x)) → c(x)
c(u(x)) → b(x)
v(e(x)) → x
b(u(x)) → a(e(x))

Rewrite Strategy: INNERMOST

(1) CpxTrsToCdtProof (BOTH BOUNDS(ID, ID) transformation)

Converted Cpx (relative) TRS to CDT

(2) Obligation:

Complexity Dependency Tuples Problem
Rules:

d(z0) → e(u(z0))
d(u(z0)) → c(z0)
c(u(z0)) → b(z0)
v(e(z0)) → z0
b(u(z0)) → a(e(z0))

Tuples:

D(z0) → c1
D(u(z0)) → c2(C(z0))
C(u(z0)) → c3(B(z0))
V(e(z0)) → c4
B(u(z0)) → c5

S tuples:

D(z0) → c1
D(u(z0)) → c2(C(z0))
C(u(z0)) → c3(B(z0))
V(e(z0)) → c4
B(u(z0)) → c5

K tuples:none
Defined Rule Symbols:

d, c, v, b

Defined Pair Symbols:

D, C, V, B

Compound Symbols:

c1, c2, c3, c4, c5

(3) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID) transformation)

Removed 5 trailing nodes:

D(u(z0)) → c2(C(z0))
C(u(z0)) → c3(B(z0))
B(u(z0)) → c5
D(z0) → c1
V(e(z0)) → c4

(4) Obligation:

Complexity Dependency Tuples Problem
Rules:

d(z0) → e(u(z0))
d(u(z0)) → c(z0)
c(u(z0)) → b(z0)
v(e(z0)) → z0
b(u(z0)) → a(e(z0))

Tuples:none
S tuples:none
K tuples:none
Defined Rule Symbols:

d, c, v, b

Defined Pair Symbols:none

Compound Symbols:none

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

The set S is empty

(6) BOUNDS(1, 1)