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Proof step 1 from proof encode-node (conclusion)

n + nd.flashsize ≤ # buf, buf0 = buf ⊦ ⟪encode_node#(nd, n; m, buf; err)⟫ ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ # buf = # buf0 ∧ subarray(buf, 0, n) = subarray(buf0, 0, n) ∧ subarray(buf, n + nd.flashsize, # buf0 - n + nd.flashsize) = subarray(buf0, n + nd.flashsize, # buf0 - n + nd.flashsize) ∧ (err = ESUCCESS → abs-node(subarray(buf, n, nd.flashsize), nd) ∧ m = nd.flashsize))

System applied rule normalize

And obtained the following new goals

Proof step 2:
buf0 = buf, n + nd.flashsize ≤ # buf ⊦ ⟪encode_node#(nd, n; m, buf; err)⟫ ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ # buf = # buf0 ∧ subarray(buf, 0, n) = subarray(buf0, 0, n) ∧ subarray(buf, n + nd.flashsize, # buf0 - n + nd.flashsize) = subarray(buf0, n + nd.flashsize, # buf0 - n + nd.flashsize) ∧ (err = ESUCCESS → abs-node(subarray(buf, n, nd.flashsize), nd) ∧ m = nd.flashsize))

Proof step 1 from proof encode-node (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information