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Proof step 1 from proof prepost-decode-orphans (conclusion)

is-encoded(orphans0, buf), n = # orphans0, # buf = # orphans0 * ENCODED_NAT_SIZE ⊦ ⟪persistence_io_decode_orphans#(n, buf; ; orphans, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → orphans = orphans0))

System applied rule normalize

And obtained the following new goals

Proof step 2:
# buf = # orphans0 * ENCODED_NAT_SIZE, n = # orphans0, is-encoded(orphans0, buf) ⊦ ⟪persistence_io_decode_orphans#(n, buf; ; orphans, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → orphans = orphans0))

Proof step 1 from proof prepost-decode-orphans (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

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