element: Si lattice type: diamond modelname: SW_BalamaneHauchShi_2017Brittle_Si__MO_381114941873_002 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -37.039998 Iterations: 32 Function evaluations: 66 {'lattice_constant': 5.4309497475624084, 'cohesive_energy': 4.6299997999116735, 'element': 'Si', 'species': 'Si" "Si" "Si" "Si" "Si" "Si" "Si" "Si', 'crystal_structure': 'diamond', 'space_group': 'Fd-3m', 'wyckoff_code': '8a', 'basis_atoms': '[[0.0 0.0 0.0] [0.25 0.25 0.25] [0.5 0.5 0.0] [0.75 0.75 0.25] [0.5 0.0 0.5] [0.75 0.25 0.75] [0.0 0.5 0.5] [0.25 0.75 0.75]]', 'iterations': 32, 'func_calls': 66, 'warnflag': 0, 'repeat': 0}