### (0) Obligation:

Runtime Complexity TRS:

The TRS R consists of the following rules:

from(X) → cons(X)

length → 0

length → s(length1)

length1 → length

Rewrite Strategy: FULL

### (1) InfiniteLowerBoundProof (EQUIVALENT transformation)

The loop following loop proves infinite runtime complexity:

The rewrite sequence

length →^{+} s(length)

gives rise to a decreasing loop by considering the right hand sides subterm at position [0].

The pumping substitution is [ ].

The result substitution is [ ].

### (2) BOUNDS(INF, INF)