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Proof step 4 from proof eq-io-readpage (previous step)

⟨afs_readpage#(p_inode, pageno0, dirs1, files1, asynced0; buf, err)⟩ (buf = buf0 ∧ err = err0), asynced ↔ boolvar0, dirs = dirs1, files = files1, inode = p_inode, pageno = pageno0 ⊦ ⟨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⟩ (buf = buf0 ∧ err = err0)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Proof step 5:
⟨afs_readpage#(p_inode, pageno0, dirs1, files1, asynced0; buf, err)⟩ (buf = buf0 ∧ err = err0), asynced ↔ boolvar0, dirs = dirs1, files = files1, inode = p_inode, pageno = pageno0, pre-readpage(inode, pageno, buf, dirs, files) ⊦ ⟨{if pageno ∈ files[inode.ino].content then buf := files[inode.ino].content[pageno] else buf := zeropage; err := ESUCCESS} or fail#(; ; err)⟩ (buf = buf0 ∧ err = err0)
Proof step 48:
⟨afs_readpage#(p_inode, pageno0, dirs1, files1, asynced0; buf, err)⟩ (buf = buf0 ∧ err = err0), asynced ↔ boolvar0, dirs = dirs1, files = files1, inode = p_inode, pageno = pageno0 ⊦ ⟨abort⟩ (buf = buf0 ∧ err = err0), pre-readpage(inode, pageno, buf, dirs, files)

Proof step 4 from proof eq-io-readpage (previous step)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

Additional information