scripts/wt.py:9: RuntimeWarning: overflow encountered in expm1
  k = lambda z: 1.0 / np.expm1(z)
check rho=1 D=1: H diff 1.754198926747e-02   integral diff 1.754198926747e-02
check rho=0.3 D=4: H diff 1.543730134987e-01   integral diff 1.543730134987e-01
check rho=0.01 D=50: H diff 4.416426687066e-02   integral diff 4.416426686996e-02
min over loop of normalized d2W/dsigma2 (negative = not convex):
  rho=1 D=1  t=0.01:conv t=0.1:conv t=0.3:conv t=1:conv t=3:conv t=10:conv
  rho=0.1 D=1  t=0.01:conv t=0.1:conv t=0.3:conv t=1:conv t=3:conv t=10:conv
  rho=1 D=10  t=0.01:conv t=0.1:conv t=0.3:conv t=1:conv t=3:conv t=10:conv
  rho=0.01 D=10  t=0.01:conv t=0.1:conv t=0.3:conv t=1:conv t=3:conv t=10:conv
  rho=0.01 D=1000  t=0.01:conv t=0.1:conv t=0.3:conv t=1:conv t=3:conv t=10:conv
  rho=1 D=1000  t=0.01:conv t=0.1:conv t=0.3:conv t=1:conv t=3:conv t=10:conv
