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Proof step 18 from proof max-perm (previous step)

max(ints1) = max(ints0 -1l i), i < max(ints1), i ∈ ints0, perm(ints1, ints0 -1l i) ⊦ ints1 = [], max(ints1) = max(ints0)

User applied rule insert equation

And obtained the following new goals

Proof step 19:
i < max(ints0 -1l i), i ∈ ints0, perm(ints1, ints0 -1l i) ⊦ ints1 = [], max(ints0 -1l i) = max(ints0)

Rule argument

pos: left 1 flags: discard

Additional information