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Proof step 13 from proof range-eq-validtrailer (previous step)

subarray(mkempbuf(n), n0, NODE_HEADER_SIZE) = validtrailer, is-aligned(# buf, NODE_HEADER_SIZE), is-aligned(n0, NODE_HEADER_SIZE), n0 + NODE_HEADER_SIZE ≤ n ⊦ n = 0

User applied rule cut formula

And obtained the following new goals

Proof step 14:
subarray(mkempbuf(n), n0, NODE_HEADER_SIZE) = validtrailer, is-aligned(n0, NODE_HEADER_SIZE), is-aligned(# buf, NODE_HEADER_SIZE), n0 + NODE_HEADER_SIZE ≤ n ⊦ n = 0, isempty(validtrailer)

Rule argument

fma: isempty(validtrailer)

Additional information

Used simplifier rules: ⊦ ¬ isempty(validtrailer); (s) Used formulas: isempty(validtrailer)