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

nused = n0 + n, n ≤ nused, m + nused ≤ # zbrar ⊦ payload(zbrar, m, nused) = payload(zbrar, m, n) ⊕ payload(zbrar, m + n, n0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
m + n0 + n ≤ # zbrar ⊦ payload(zbrar, m, n0 + n) = payload(zbrar, m, n) ⊕ payload(zbrar, m + n, n0)

Rule argument

Additional information

Used simplifier rules: c: ⊦ m + n = n + m; from specification nat-basic2%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic2%lep: ⊦ m ≤ m + n; from specification nat