MINOS 5.5: infeasible problem (or bad starting guess).
30 iterations
Nonlin evals: constrs = 8, Jac = 7.
Objective = find a feasible point.
t = 0
u1 = 0
u2 = 0
u3 = 9
u4 = 0
w = 0
x = 0
y = 0
z = 0