  By combining extrapolated selected configuration interaction (sCI) energies
obtained with the CIPSI (Configuration Interaction using a Perturbative
Selection made Iteratively) algorithm with the recently proposed short-range
density-functional correction for basis-set incompleteness [Giner et al.,J.
Chem. Phys. 2018, 149, 194301], we show that one can get chemically accurate
vertical and adiabatic excitation energies with, typically, augmented
double-$\zeta$ basis sets. We illustrate the present approach on various types
of excited states (valence, Rydberg, and double excitations) in several small
organic molecules (methylene, water, ammonia, carbon dimer and ethylene). The
present study clearly evidences that special care has to be taken with very
diffuse excited states where the present correction does not catch the radial
incompleteness of the one-electron basis set.
