Enter a species (e.g. Al, Fe): Xe Enter a hexagonal lattice type (e.g. hcp): hcp Enter a model name: LJ_Shifted_Bernardes_1958LowCutoff_Xe__MO_648694198005_003 Enter hexagonal lattice constants 'a' and 'c' (m): 4.358690459624964e-10, 7.121533208878105e-10 Calculating isothermal bulk modulus Warning: Maximum number of function evaluations has been exceeded. Finished calculation C11 = 6.96064179704327 GPa C12 = 1.859201845519763 GPa B = 3.559681829360932 GPa