inca (University of New South Wales, Australia)
inca is a prototypical constraint answer set programming system. Like clingcon, it extends the modelling language of ASP with constraints over finite domain integer variables. Unlike clingcon, inca adopts lazy nogood generation to fully integrate constraint propagation into conflict-driven learning.
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A preliminary version of inca was implemented as preprocessing. It offers various options leading to (non-ground) enodings that can be grounded by gringo.