iss with glpk test fails (pluto+)

[bondhugula]

test/multi-stmt-2d-periodic.c test/multi-stmt-2d-periodic.c:6:15: error: CHECK-DAG: expected string not found in input
// CHECK-DAG: T(S{{[0-9]+}}): (t, t+i, t+j)
^
:26:1: note: scanning from here
[pluto] Affine transformations [<iter coeff's> ]
^
:31:1: note: possible intended match here
T(S2): (t, t+j, t+i)
^
[Failed] test/multi-stmt-2d-periodic.c!

This could be due to the recent change to the objective -- t+j is being preferred over t+i.