sink: "{ S[] -> a[] }"
may_source: "{ T[i] -> a[] : 0 <= i <= 9 }"
kill: "{ K[] -> a[] }"
schedule:
domain: "{ T[i]; S[]; K[] }"
child:
sequence:
- filter: "{ T[i]; K[] }"
child:
schedule: "[{ T[i] -> [(i)]; K[] -> [(4)] }]"
- filter: "{ S[] }"