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Proof step 20 from proof divide-list-at-value (previous step)

ints1 ≠ [], perm(ints0, ints1 + ints), i ≤ j, j < max(i, max(ints1)), max(ints1) ≤ j, i < max(i, max(ints1)), max(ints1) < max(i, max(ints1)), ints = [] ∨ j < min(ints) ⊦ ints1 = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 21:
perm(ints0, ints1 + ints), i ≤ j, j < max(i, max(ints1)), max(ints1) ≤ j, i < max(i, max(ints1)), max(ints1) < max(i, max(ints1)), ints = [] ∨ j < min(ints) ⊦ ints1 = []

Rule argument

Additional information

Used simplifier rules: forward-lels: ⊦ i ≤ j ∧ j < j0 → i < j0; (forward) from specification int-abs