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Proof step 60 from proof refine-readpage (previous step)

# buf0 = VFS_PAGE_SIZE, err = err0, orphans(fs, ri).inodes?, fo.inodes?, afs-cons(abs-dirs(fs, ri), abs-files(fs, ri)), file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, orphans(fs, ri)), replay-cons-strong(fs, ri, orphans(fs, ri), fi, fo, log), ri-inj(ri), ri-inj(fi), ubifs-cons(fs, ri, orphans(fs, ri), fi, fo, log), inodekey(m) ∈ ri, asynced → boolvar2, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪boolvar := ?, nd := ?; buf := buf0; if err = ESUCCESS then if boolvar then buf := copy(nd.data, 0, buf, 0, VFS_PAGE_SIZE) else buf := fill(buf, zero)⟫ ⟨afs_readpage#(mkinode(m, md, boolvar1, m0, m1, m2), pageno, abs-dirs(fs, ri), abs-files(fs, ri), asynced; buf0, err1)⟩ ((asynced → boolvar2) ∧ buf = buf0 ∧ err = err1), err = ESUCCESS, fs[ri[inodekey(m)]].directory

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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