element: C lattice type: bcc modelname: hNN_WenTadmor_2019Grx_C__MO_421038499185_001 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -9.046179 Iterations: 27 Function evaluations: 55 {'lattice_constant': 2.165138103067875, 'cohesive_energy': 4.523089509000929, 'element': 'C', 'species': 'C" "C', 'crystal_structure': 'bcc', 'space_group': 'Im-3m', 'wyckoff_code': '2a', 'basis_atoms': '[[0.0 0.0 0.0] [0.5 0.5 0.5]]', 'iterations': 27, 'func_calls': 55, 'warnflag': 0, 'repeat': 0}