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Proof step 31 from proof max-concat (previous step)

x1 = i0 + x, ∀ x0, y0. # x0 + # y0 < # (i + x1) + # y → (true → x0 = [] ∨ y0 = [] ∨ max(x0 + y0) = max(max(x0), max(y0))) ⊦ y = [], max((i ' + x1) + y) = max(max(y), max(i ' + x1))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
⊦ max(i ' + j ' + x) = max(max(i, j), max(min(i, j) ' + x))
Proof step 30:
∀ x0, y0. # x0 + # y0 < # (i + i0 + x) + # y → (true → x0 = [] ∨ y0 = [] ∨ max(x0 + y0) = max(max(x0), max(y0))) ⊦ y = [], max(max(i, i0), max(min(i, i0) ' + x + y)) = max(max(max(i, i0), max(min(i, i0) ' + x)), max(y))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (x + y) + z = x + y + z], [CSIMPSEQ : ⊦ d + x = d ' + x])]]