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Proof step 5 from proof read-loop-err (previous step)

buf0 = buf, err = ESUCCESS, ino0 = ino, ino1 = ino4, ino2 = ino3, ¬ isdir ⊦ [let pageno = (ino2 + ino0) / VFS_PAGE_SIZE, ino = (ino2 + ino0) % VFS_PAGE_SIZE, buf = mkbuf(VFS_PAGE_SIZE) in let n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino, inode.size - ino2 + ino0) in if n ≠ 0 then {afs_readpage#(inode, pageno, dirs, files, asynced; buf, err); if err = ESUCCESS then {buf0 := copy(buf, ino, buf0, ino0, n); ino0 := ino0 + n}} else isdir := true] (⌊err⌋ ∨ err = ESUCCESS)

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Proof step 6:
buf = mkbuf(VFS_PAGE_SIZE), buf0 = buf1, err = ESUCCESS, ino = (ino2 + ino0) % VFS_PAGE_SIZE, ino0 = ino5, ino1 = ino4, ino2 = ino3, ¬ isdir, pageno = (ino2 + ino0) / VFS_PAGE_SIZE ⊦ [let n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino, inode.size - ino2 + ino0) in if n ≠ 0 then {afs_readpage#(inode, pageno, dirs, files, asynced; buf, err); if err = ESUCCESS then {buf0 := copy(buf, ino, buf0, ino0, n); ino0 := ino0 + n}} else isdir := true] (⌊err⌋ ∨ err = ESUCCESS), VFS_PAGE_SIZE = 0

Proof step 5 from proof read-loop-err (previous step)

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Rule argument

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