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!!!!! VERIFICATION CHECK: vc-forces-numerical-derivative !!!!!
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Description: Comparison of the analytical forces obtained from the model with
forces computed by numerical differentiation using Richardson
extrapolation for a randomly distorted non-periodic structure based
off the equilibrium face-centered cubic (fcc) structure. Separate
configurations are tested for each species supported by the model,
as well as one containing a random distribution of all species.
Configurations used for testing are provided as auxiliary files.
Author: Ellad Tadmor
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Results for KIM Model : Sim_LAMMPS_Buckingham_Vaari_2015_FeO__SM_672759489721_000
Supported species : Fe O
random seed = 13
perturbation amplitude = 0.250
number unit cells per side = 2
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FAILED to get equilibrium constant for species = Fe; skipping
FAILED to get equilibrium constant for species = O; skipping
ERROR: Failed to compute a single numerical derivative.
ERROR: Unable to perform verification check.
Message = ERROR: Failed to compute a single numerical derivative.