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

files[m] = mkfile(m3, md0, m4, content) ⊦ [afs_readpage#(mkinode(m, md, boolvar, m0, m1, m2), n, dirs, files, asynced; buf, err)] (err = ESUCCESS ∧ buf = getpage(n, content) ∨ ⌊err⌋ )

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 6:
files[m] = mkfile(m3, md0, m4, content), inode = mkinode(m, md, boolvar, m0, m1, m2), pageno = n ⊦ [if pre-readpage(inode, pageno, buf, dirs, files) then { {if pageno ∈ files[inode.ino].content then buf := files[inode.ino].content[pageno] else buf := zeropage; err := ESUCCESS} or fail#(; ; err)} else abort] (err = ESUCCESS ∧ buf = getpage(n, content) ∨ ⌊err⌋ )

Rule argument

pos: right 1

Additional information

Used simplifier rules: afs_readpage#(INODE, PAGENO, DIRS, FILES, ASYNCED; PBUF, ERR) {if pre-readpage(INODE, PAGENO, PBUF, DIRS, FILES) then { {if PAGENO ∈ FILES[INODE.ino].content then PBUF := FILES[INODE.ino].content[PAGENO] else PBUF := zeropage; ERR := ESUCCESS} or fail#(; ; ERR)} else abort };