MINOS 5.5: infeasible problem (or bad starting guess).
49 iterations
Nonlin evals: constrs = 12, Jac = 11.
Objective = find a feasible point.
a1 = -0.00204953
a2 = 0.0968688
a3 = -1.09482
x1 = 0.014751
x2 = 0.0480843
x3 = 0.0814176