potential regression with respect to 2.3.0
Seems to be slower for a c100. See https://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/2020-April/001207.html
Seems to be slower for a c100. See https://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/2020-April/001207.html