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Proof step 5 from proof refine-readpage (previous step)

# buf0 = VFS_PAGE_SIZE, buf = buf0, err = err0, 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, ¬ fs[ri[inodekey(m)]].directory, asynced → boolvar ⊦ ⟪aubifs_readpage#(mkinode(m, md, boolvar0, m0, m1, m2), pageno, ri, fi, orphans(fs, ri), fo, fs, log, boolvar; buf, err)⟫ ⟨afs_readpage#(mkinode(m, md, boolvar0, m0, m1, m2), pageno, abs-dirs(fs, ri), abs-files(fs, ri), asynced; buf0, err0)⟩ ((asynced → boolvar) ∧ buf = buf0 ∧ err = err0)

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 6:
# buf0 = VFS_PAGE_SIZE, boolvar0 ↔ boolvar, buf = buf0, err = err0, inode = mkinode(m, md, boolvar1, m0, m1, m2), ro = orphans(fs, ri), 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 → boolvar ⊦ ⟪if pre-readpage(inode, pageno, buf, fs, ri) then choose key, boolvar, nd with true in {err := ESUCCESS; key := datakey(inode.ino, pageno); aubifs_core_index_lookup#(key, ri, fi, ro, fo, fs, log, boolvar0; boolvar, nd; err); if err = ESUCCESS then if boolvar then buf := copy(nd.data, 0, buf, 0, VFS_PAGE_SIZE) else buf := fill(buf, zero)} else abort⟫ ⟨afs_readpage#(mkinode(m, md, boolvar1, m0, m1, m2), pageno, abs-dirs(fs, ri), abs-files(fs, ri), asynced; buf0, err0)⟩ ((asynced → boolvar) ∧ buf = buf0 ∧ err = err0), fs[ri[inodekey(m)]].directory

Rule argument

pos: right 1

Additional information

Used simplifier rules: aubifs_readpage# (INODE, PAGENO, RI, FI, RO, FO, FS, LOG, CSYNCED; PBUF, ERR) {if pre-readpage(INODE, PAGENO, PBUF, FS, RI) then choose KEY, EXISTS, ND with true in {ERR := ESUCCESS; KEY := datakey(INODE.ino, PAGENO); aubifs_core_index_lookup# (KEY, RI, FI, RO, FO, FS, LOG, CSYNCED; EXISTS, ND; ERR); if ERR = ESUCCESS then if EXISTS then PBUF := copy(ND.data, 0, PBUF, 0, VFS_PAGE_SIZE) else PBUF := fill(PBUF, zero)} else abort };