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