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Proof step 3 from proof ladr-split (previous step)

(ladr + lax0).to-adr(n) = ax0 + ax1, ∀ n, ax0, ax1. lax0.to-adr(n) = ax0 + ax1 → (∃ lax2, lax1. lax0 = lax2 + lax1 ∧ ax0 = lax2.to-adr(n) ∧ ax1 = lax1.to-adr(n)) ⊦ ∃ lax2, lax1. ladr + lax0 = lax2 + lax1 ∧ ax0 = lax2.to-adr(n) ∧ ax1 = lax1.to-adr(n)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
@(n, ladr.off, ladr.size) ' + lax0.to-adr(n) = ax0 + ax1, ∀ n, ax0, ax1. lax0.to-adr(n) = ax0 + ax1 → (∃ lax2, lax1. lax0 = lax2 + lax1 ∧ ax0 = lax2.to-adr(n) ∧ ax1 = lax1.to-adr(n)), @(n, ladr.off, ladr.size) ∈ ax0 ∨ @(n, ladr.off, ladr.size) ∈ ax1 ⊦ ∃ lax, lax1. ladr ' + lax0 = lax + lax1 ∧ ax0 = lax.to-adr(n) ∧ ax1 = lax1.to-adr(n)

Rule argument

Additional information

Used simplifier rules: ⊦ adr ∈ ax + ax0 ↔ adr ∈ ax ∨ adr ∈ ax0; (s)%a: ⊦ (ax + ax0) + ax1 = ax + ax0 + ax1; from specification list[address-list-set]%in-14: ⊦ adr ' + ax = ax0 → adr ∈ ax0; (forward) from specification list[address-list-set]%a: ⊦ (lax + lax0) + lax1 = lax + lax0 + lax1; from specification list[laddress-list]% ⊦ adr + ax = adr ' + ax; (s)%⊦ (ladr ' + lax).to-adr(n) = @(n, ladr.off, ladr.size) + lax.to-adr(n); (s)% ⊦ ladr + lax = ladr ' + lax; (s)