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Proof step 3 from proof nodes-append (previous step)

st[n] = mkblock(x, lax, m0), ladr = @(m, m2), inv(mkblock(x, lax, m0)), n ∈ st ⊦ nodes(st[n, mkblock(x + a ', lax + ladr ', m1)]) = nodes(st)[@(n, m, m2), a], ladr ∈ lax

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
st[n] = mkblock(x, lax, m0), inv(mkblock(x, lax, m0)), n ∈ st ⊦ nodes(st[n, mkblock(x + a ', lax + @(m, m2) ', m1)]) = nodes(st)[@(n, m, m2), a], @(m, m2) ∈ lax

Proof step 3 from proof nodes-append (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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