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Proof step 19 from proof inv-readpage (previous step)

# buf = VFS_PAGE_SIZE, boolvar ↔ datakey(m, pageno) ∈ ri, err = err0, err = ESUCCESS, ro.inodes?, fo.inodes?, file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, ro), replay-cons-strong(fs, ri, ro, fi, fo, log), ri-inj(ri), ri-inj(fi), ubifs-cons(fs, ri, ro, fi, fo, log), inodekey(m) ∈ ri, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if boolvar then nd := fs[ri[datakey(m, pageno)]] else nd := ?; if err = ESUCCESS then if boolvar then buf := copy(nd.data, 0, buf, 0, VFS_PAGE_SIZE) else buf := fill(buf, zero)⟫ true, fs[ri[inodekey(m)]].directory

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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