1predicate fzn_disjunctive_opt_reif(array[int] of var opt int: s, 2 array[int] of var int: d, 3 var bool: b) = 4 b <-> forall (i,j in index_set(d) where i<j) ( 5 absent(s[i]) \/ absent(s[j]) \/ 6 d[i]=0 \/ d[j]=0 \/ 7 deopt(s[i])+d[i] <= deopt(s[j]) \/ 8 deopt(s[j])+d[j] <= deopt(s[i]) 9 );