1# the affine hull of {[a,b] : a=b && 1 <= a <= 163} ...
23 4
30 1 -1 0
41 1  0 -1
51 -1 0 163
6
7# ... is {[a,b] : a=b} (and not {[In_1,In_2]}, as Omega 1.2 claims)
81 4
90 1 -1 0
10