MINOS 5.5: infeasible problem (or bad starting guess).
93 iterations
Nonlin evals: constrs = 104, Jac = 103.
Objective = find a feasible point.
x1 = 0.747606
x2 = 1
x3 = 1
x4 = -0.551939
x5 = 1
x6 = 1
x7 = -0.0623207
x8 = 1