- largest residual force at the end of iteration ≤ 0.005 * iteration-averaged average force of all iterations within the current increment excluding the current iteration AND
- largest change in displacement in the current iteration ≤ 0.01 * largest change in displacement in the current increment OR
- estimate of the largest displacement correction in the next iteration < 0.01 * largest change in displacement in the current increment
After 9 iterations, the first criterion is relaxed and alternative tolerance of 0.02 is used instead of 0.005.
Those criteria can be changed with solution controls settings but it’s not recommended in most cases.
Maybe you should try with even coarser mesh just to see if it solves properly and then try refining.