sink: "{ [S_2[] -> __pet_ref_4[]] -> a[] }"
must_source: "{ [S_0[] -> __pet_ref_0[]] -> a[]; [S_2[] -> __pet_ref_3[]] -> b[]; [S_1[] -> __pet_ref_1[]] -> a[]; [S_1[] -> __pet_ref_2[]] -> a[] }"
may_source: "{ [S_1[] -> __pet_ref_2[]] -> a[]; [S_1[] -> __pet_ref_1[]] -> a[]; [S_2[] -> __pet_ref_3[]] -> b[]; [S_0[] -> __pet_ref_0[]] -> a[] }"
schedule:
  domain: "{ [S_1[] -> __pet_ref_1[]]; [S_1[] -> __pet_ref_2[]]; [S_2[] -> __pet_ref_3[]]; [S_0[] -> __pet_ref_0[]]; [S_2[] -> __pet_ref_4[]] }"
  child:
    sequence:
    - filter: "{ [S_0[] -> __pet_ref_0[]] }"
    - filter: "{ [S_1[] -> __pet_ref_1[]]; [S_1[] -> __pet_ref_2[]] }"
    - filter: "{ [S_2[] -> __pet_ref_3[]]; [S_2[] -> __pet_ref_4[]] }"