(0) Obligation:

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

ff
g(b) → c
bc

Rewrite Strategy: FULL

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

Transformed TRS to relative TRS where S is empty.

(2) Obligation:

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

ff
g(b) → c
bc

S is empty.
Rewrite Strategy: FULL

(3) InfiniteLowerBoundProof (EQUIVALENT transformation)

The loop following loop proves infinite runtime complexity:
The rewrite sequence
f →+ f
gives rise to a decreasing loop by considering the right hand sides subterm at position [].
The pumping substitution is [ ].
The result substitution is [ ].

(4) BOUNDS(INF, INF)