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Proof step 19 from proof refine-writepage (previous step)

# buf = VFS_PAGE_SIZE, fs0 = fs, fs3 = fs, nd = datanode(datakey(m, pageno), buf), ro = orphans(fs, ri), fo.inodes?, orphans(fs, ri).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(fi), ri-inj(ri), ubifs-cons(fs, ri, orphans(fs, ri), fi, fo, log), inodekey(m) ∈ ri, asynced → boolvar2 ⊦ ⟪ choose adr1 with new(adr1 ', fs) ∧ ¬ dups(adr1 ') in {adr := adr1; fs[adr] := nd, log := log + adr, err := ESUCCESS} ifnone err := ENOSPC or {fail#(; ; err); adr := ?}; boolvar := ?; ro0 := orphans(fs0, ri); files := abs-files(fs0, ri); dirs := abs-dirs(fs3, ri); boolvar2 := boolvar; if err = ESUCCESS then aubifs_core_index_store#(datakey(m, pageno), adr, fi, orphans(fs0, ri), fo, fs, log, boolvar2; ri)⟫ ⟨afs_writepage#(mkinode(m, md, boolvar1, m0, m1, m2), pageno, buf, dirs; err0, files; asynced)⟩ ( dirs = abs-dirs(fs, ri) ∧ files = abs-files(fs, ri) ∧ orphans(abs-dirs(fs, ri), abs-files(fs, ri)) = abs-keys(ro0) ∧ (asynced → boolvar2) ∧ err = err0), fs[ri[inodekey(m)]].directory

Heuristic conditional right split applied rule or split right

And obtained the following new goals

Rule argument

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