SciPy[L-BFGS-B]
FCN = nan Nfcn = 100000, Ngrad = 200000
EDM = 1.23e-10 (Goal: 1e-05) time = 1.2 sec
INVALID Minimum SOME Parameters at limit
ABOVE EDM threshold (goal x 10) ABOVE call limit
NO Covariance Hesse FAILED APPROXIMATE NOT pos. def. FORCED