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Proof step 9 from proof readpage-prepost (previous step)

inode = mkinode(m0, md0, boolvar, m1, m2, m3), pageno = n, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), pre-readpage(inode, pageno, buf, dirs, files), pageno ∈ files[inode.ino].content ⊦ [err := ESUCCESS] (err = ESUCCESS ∧ ⌜files[inode.ino].content[pageno]⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE ∨ ⌊err⌋ )

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 10:
inode = mkinode(m0, md0, boolvar, m1, m2, m3), pageno = n, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), pre-readpage(inode, pageno, buf, dirs, files), pageno ∈ files[inode.ino].content ⊦ ⌊ESUCCESS⌋ , ESUCCESS = ESUCCESS ∧ ⌜files[inode.ino].content[pageno]⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE

Proof step 9 from proof readpage-prepost (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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