predicate _int_lin_le_imp(
	array[int] of int: c,
	array[int] of var int: x,
	int: d,
	var bool: b
) =
	if is_fixed(b) then
		if fix(b) then
			int_lin_le(c, x, d)
		else
			true
		endif
	else
		int_lin_le_imp(c, x, d, b)
	endif;