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Proof step 20 from proof inv-flashsize-append (previous step)

# x = # lax, n ≤ # lax, ∀ n. n < # lax → lax[n].size = x[n].flashsize ⊦ (lax + @(m, a.flashsize) ')[n].size = (x + a ')[n].flashsize

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 21:
# x = # lax, (lax + @(m, a.flashsize) ')[n] = @(m0, m1), n ≤ # lax, ∀ n. n < # lax → lax[n].size = x[n].flashsize ⊦ m1 = (x + a ')[n].flashsize

Rule argument

spec: laddress name: elim seq: ⊦ m = ladr.off ∧ m0 = ladr.size ↔ ladr = @(m, m0) subst: [ladr, m, m0] → [(lax + @(m, a.flashsize) ')[n], m0, m1]

Additional information

Used simplifier rules: ⊦ m = ladr.off ∧ m0 = ladr.size ↔ ladr = @(m, m0); (elim) Used terms: (lax + @(m, a.flashsize) ')[n], m0, m1