%-----------------------------------------------------------------------------%
% Requires that the array 'x' is in increasing order (duplicates are allowed).
%-----------------------------------------------------------------------------%

predicate fzn_increasing_set_reif(array[int] of var set of int: x, var bool: b) =
    b <-> forall(i in index_set(x) diff { min(index_set(x)) }) (x[i-1] <= x[i]);