| rs1 ∩ rs0 = ∅, R[rs0, f(r; o1), g], a[r => o1][rs1, f(r; o1), g], r ∈ rs0 ⊦ (a[r => f(r)] * R)[rs1 ∪ rs0, f, g], a[r => f(r)][rs1, f, g] ∧ R[rs0, f, g] |
rs1 ∩ rs0 = ∅, R[rs0, f(r; o1), g], a[r => o1][rs1, f(r; o1), g], r ∈ rs0 ⊦ # rs0 = 0, rs0 = ∅, (a[r => f(r)] * R)[rs1 ∪ rs0, f, g], a[r => f(r)][rs1, f, g] ∧ R[rs0, f, g]
Used simplifier rules: size-zero-01: ⊦ rs ≠ ∅ → # rs ≠ 0; (forward) from specification set-basic[refset]%ne-01: ⊦ r ∈ rs → rs ≠ ∅; (forward) from specification set-basic[refset]