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Proof step 21 from proof read-loop-err (previous step)

VFS_PAGE_SIZE = n0 + (ino2 + ino0) % VFS_PAGE_SIZE, buf = mkbuf(VFS_PAGE_SIZE), err = ESUCCESS, err0 = ESUCCESS, inode = mkinode(m, md, boolvar, m0, m1, m2), pageno = (ino2 + ino0) / VFS_PAGE_SIZE, ino2 + ino0 < ino1, ino2 + ino0 < m2, pre-readpage(inode, pageno, buf, dirs, files) ⊦ [if err = ESUCCESS then {buf0 := copy(zeropage, (ino2 + ino0) % VFS_PAGE_SIZE, buf0, ino0, min(ino1 - ino2 + ino0, n0, m2 - ino2 + ino0)); ino3 := ino0 + min(ino1 - ino2 + ino0, n0, m2 - ino2 + ino0)}] (⌊err⌋ ∨ err = ESUCCESS), VFS_PAGE_SIZE = 0, ino1 = ino2 + ino0, m2 = ino2 + ino0, n0 = 0, pageno ∈ files[inode.ino].content

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Rule argument

pos: right 1

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