Steepest Descents:
   Tolerance (Fmax)   =  1.00000e+00
   Number of steps    =      1000000
Step=    0, Dmax= 2.0e-02 nm, Epot=  4.74007e+05 Fmax= 4.37970e+05, atom= 1842
Step=    1, Dmax= 2.0e-02 nm, Epot=  7.19293e+04 Fmax= 3.57933e+04, atom= 2588
Step=    2, Dmax= 2.4e-02 nm, Epot=  3.56795e+04 Fmax= 9.52568e+03, atom= 2993
Step=    3, Dmax= 2.9e-02 nm, Epot=  3.46459e+04 Fmax= 1.50508e+04, atom= 2992
Step=    4, Dmax= 3.5e-02 nm, Epot=  2.99879e+04 Fmax= 1.37059e+04, atom= 2592
Step=    6, Dmax= 2.1e-02 nm, Epot=  1.30782e+04 Fmax= 4.02791e+03, atom= 1342
Step=    9, Dmax= 6.2e-03 nm, Epot=  1.04672e+04 Fmax= 1.87751e+03, atom= 2392
Step=   10, Dmax= 7.5e-03 nm, Epot=  1.02199e+04 Fmax= 3.76147e+03, atom= 1792
Step=   11, Dmax= 9.0e-03 nm, Epot=  1.01147e+04 Fmax= 4.34365e+03, atom= 2392
Step=   13, Dmax= 5.4e-03 nm, Epot=  7.19423e+03 Fmax= 1.91912e+03, atom= 2765
Step=   15, Dmax= 3.2e-03 nm, Epot=  6.81202e+03 Fmax= 2.03533e+03, atom= 2765
Step=   16, Dmax= 3.9e-03 nm, Epot=  6.37647e+03 Fmax= 3.00818e+03, atom= 2765
Step=   17, Dmax= 4.6e-03 nm, Epot=  6.07244e+03 Fmax= 2.75324e+03, atom= 2765
Step=   19, Dmax= 2.8e-03 nm, Epot=  5.60144e+03 Fmax= 8.43337e+02, atom= 2765
Step=   20, Dmax= 3.3e-03 nm, Epot=  5.49136e+03 Fmax= 3.08327e+03, atom= 2765
Step=   21, Dmax= 4.0e-03 nm, Epot=  5.09456e+03 Fmax= 2.09083e+03, atom= 2765
Step=   23, Dmax= 2.4e-03 nm, Epot=  4.83141e+03 Fmax= 8.78173e+02, atom= 2765
Step=   25, Dmax= 1.4e-03 nm, Epot=  4.78063e+03 Fmax= 1.07042e+03, atom= 2765
Step=   26, Dmax= 1.7e-03 nm, Epot=  4.51750e+03 Fmax= 1.00741e+03, atom= 2765
Step=   27, Dmax= 2.1e-03 nm, Epot=  4.46707e+03 Fmax= 1.77657e+03, atom= 2765
Step=   28, Dmax= 2.5e-03 nm, Epot=  4.35788e+03 Fmax= 1.28547e+03, atom= 915
Step=   30, Dmax= 1.5e-03 nm, Epot=  4.20725e+03 Fmax= 6.94208e+02, atom= 915
Step=   31, Dmax= 1.8e-03 nm, Epot=  3.97280e+03 Fmax= 1.39504e+03, atom= 915
Step=   32, Dmax= 2.2e-03 nm, Epot=  3.97165e+03 Fmax= 1.44422e+03, atom= 915
Step=   33, Dmax= 2.6e-03 nm, Epot=  3.85030e+03 Fmax= 1.70904e+03, atom= 915
Step=   35, Dmax= 1.6e-03 nm, Epot=  3.71519e+03 Fmax= 3.29197e+02, atom= 472
Step=   36, Dmax= 1.9e-03 nm, Epot=  3.32876e+03 Fmax= 1.57250e+03, atom= 915
Step=   39, Dmax= 5.6e-04 nm, Epot=  3.23180e+03 Fmax= 8.45033e+02, atom= 2765
Step=   42, Dmax= 1.7e-04 nm, Epot=  3.20617e+03 Fmax= 6.21543e+02, atom= 9153
Step=   50, Dmax= 1.6e-06 nm, Epot=  3.20591e+03 Fmax= 6.19379e+02, atom= 9155
Step=   51, Dmax= 1.9e-06 nm, Epot=  3.20911e+03 Fmax= 6.16887e+02, atom= 2765
Stepsize too small, or no change in energy.
Converged to machine precision,
but not to the requested precision Fmax < 1

Double precision normally gives you higher accuracy.

writing lowest energy coordinates.

Steepest Descents converged to machine precision in 52 steps,
but did not reach the requested Fmax < 1.
Potential Energy  =  3.2059077e+03
Maximum force     =  6.1937860e+02 on atom 915
Norm of force     =  1.7839124e+02

gcq#24: "If You Touch Me, You'll Get Shocked" (Beastie Boys)