Element = Lattice = Model = Element: He Lattice: hcp Model: TT_Modified_HellmannBichVogel_2007_He__MO_126942667206_002 Relaxation with c/a ratio fixed Simplex search starting from: 5.0 * 0 Simplex search starting from: [2.0] Creating new atoms: (1, 1, 1) * Error (Neighbor List) : "Cannot invert cell matrix. Determinant is 0." : 92:kimpy/neighlist/helper.hpp