No. I'm presuming that you're able to look at the branches in code and write white box tests. Here the relevant two branches are 453 and anything other than 453. For addition of unsigned numbers, the relevant branches are 0 + 0, 0 + 1, 0 + max, 1 + 0 (usually can be skipped), 1 + 1, 1 + max (which overflows), etc.

The number of relevant material states is bounded and knowable. It's neither unbounded (1,2,3,4,5,6 ... ) or unknowable as the algorithm is available.