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Proof step 59 from proof refine-readpage (previous step)

# buf0 = VFS_PAGE_SIZE, 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 ⊦ ⟨err := ESUCCESS⟩ ((asynced → boolvar2) ∧ fill(buf0, zero) = zeropage ∧ ESUCCESS = err), ⟨fail#(; ; err)⟩ ((asynced → boolvar2) ∧ fill(buf0, zero) = buf0 ∧ ESUCCESS = err), fs[ri[inodekey(m)]].directory, datakey(m, pageno) ∈ ri

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ # buf = VFS_PAGE_SIZE → (fill(buf, zero) = zeropage ↔ true); (s)