element=lattice type=modelname=Pb bcc Morse_Shifted_GirifalcoWeizer_1959MedCutoff_Pb__MO_958424213898_002 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -1.991945 Iterations: 31 Function evaluations: 64 {'basis_atoms': '[[0.0 0.0 0.0] [0.5 0.5 0.5]]', 'repeat': 0, 'cohesive_energy': 1.9919451579374459, 'space_group': 'Im-3m', 'element': 'Pb', 'lattice_constant': 3.926158085465431, 'wyckoff_code': '2a', 'crystal_structure': 'bcc', 'iterations': 31, 'warnflag': 0, 'species': 'Pb" "Pb', 'func_calls': 64}