element: Si lattice type: bcc modelname: ThreeBodyCluster_Gong_Gong_1993_Si__MO_407755720412_000 Attempting to perform relaxation using initial lattice constant guess of 2.5 Angstroms Optimization terminated successfully. Current function value: -12.376115 Iterations: 28 Function evaluations: 56 {'lattice_constant': 3.0538290590047836, 'cohesive_energy': 6.188057255717854, 'element': 'Si', 'species': 'Si" "Si', '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': 28, 'func_calls': 56, 'warnflag': 0, 'repeat': 0}