| a2 ∈ st[a, d][a0, d0], a2 ∈ st0[a, d][a0, d0], st ⊆ st0 ⊦ st[a, d][a0, d0][a2] = st0[a, d][a0, d0][a2], a2 = a1 |
a2 ∈ st0[a, d][a0, d0], a2 ∈ st[a, d][a0, d0], st ⊆ st0 ⊦ st[a, d][a0, d0][a2] = st0[a, d][a0, d0][a2], a2 = a1, a2 = a0
Used simplifier rules: At-same: ⊦ st[a, d][a] = d; Used formulas: a2 = a0