I am studying GNNs. I am interested in the Weisfeiler-Lehman Isomorphism Test (WL-Test).
I was looking for information about whether the test always ends or not, but I didn't find a definitive answer.
I know that we can choose how many iterations can be done, or the test is finished if the iteration makes the same result.
My question is: What if we don't choose how many iterations should be done and the iterations don't make the same result between two graphs? Will the iterations keep going on (i.e. infinitely)?