--------------------------------------------------------------------------------
This is Test                : ElasticConstantsFirstStrainGradientNumerical_fcc_Cu__TE_948689877911_000
Results for KIM Model       : Pair_Morse_Modified_MacDonaldMacDonald_Cu__MO_034823476734_000
Crystal strucutre           : fcc
Species                     : Cu
 Relaxing the crystal to its equilibrium lattice constant
 --------------------------------------------------------
     Lattice spacing                energy
Equilibrium lattice spacing :  500.0000000000