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Proof step 27 from proof min-concat (previous step)

∀ x0, y0. # x0 + # y0 < # x + # y → (true → x0 = [] ∨ y0 = [] ∨ min(x0 + y0) = min(min(x0), min(y0))) ⊦ min(x + y) = min(min(x), min(y)), y = [], x = []

User applied rule constructor cut

And obtained the following new goals

Proof step 26:
x = i + x1, ∀ x0, y0. # x0 + # y0 < # x + # y → (true → x0 = [] ∨ y0 = [] ∨ min(x0 + y0) = min(min(x0), min(y0))) ⊦ min(x + y) = min(min(x), min(y)), y = [], x = []

Rule argument

[var-arg: x]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : list generated by [], +;])]]