Find two missing elements from a sorted array in given range
You say the problem is to find missing values from a 'Range', but your method only takes a start value, not an end value.... is this intentional? The method comment says:


  Takes an input a sorted array with two variables that repeat in the range. and returns two variables that repeats


The method does nothing of the sort though... it takes one variable, and there's no indication the values repeat, and it returns missing values, not repeats.

Additionally, the method name is sortedConsecutiveTwoMissing but there's nothing in the implementation that suggests that the values have to be consecutive at all...

Also you suggest the array is sorted, but not whether it is unique... for example, your code may break on (missing is 3 and 5):

0 1 2 2 4 4 6 6 7 8 9


General / Code Style


Variables like a1 make me want to look for a2, a3, etc. Unless it's obvious, don't use numbered variables.
int high = start + (a1.length - 1) + 2; should have a comment .... the + 2 is not obvious, and magic numbers should either be very obvious, or documented. That line still makes no sense to me at all.... and high is not used for anything reasonable anyway.
calculatedX is not a calculated anything


At this point I don't believe the code does what you suggest it should, so I don't believe the code works... downvote time.

Edit the code, make it work....