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Proof step 57 from proof refine-readpage (previous step)

# buf0 = VFS_PAGE_SIZE, abs-file(m, fs, ri) = mkfile(m0, md, m1, content), fo.inodes?, orphans(fs, ri).inodes?, afs-cons(abs-dirs(fs, ri), abs-files(fs, ri)), file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, orphans(fs, ri)), replay-cons-strong(fs, ri, orphans(fs, ri), fi, fo, log), ri-inj(fi), ri-inj(ri), ubifs-cons(fs, ri, orphans(fs, ri), fi, fo, log), inodekey(m) ∈ ri, asynced → boolvar2 ⊦ ⟨fail#(; ; err)⟩ ((asynced → boolvar2) ∧ fill(buf0, zero) = buf0 ∧ ESUCCESS = err), ⟨if pageno ∈ content then buf := content[pageno] else buf := zeropage; err := ESUCCESS⟩ ((asynced → boolvar2) ∧ fill(buf0, zero) = buf ∧ ESUCCESS = err), fs[ri[inodekey(m)]].directory, datakey(m, pageno) ∈ ri

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 58:
# buf0 = VFS_PAGE_SIZE, fo.inodes?, orphans(fs, ri).inodes?, afs-cons(abs-dirs(fs, ri), abs-files(fs, ri)), file-node-cons(fs, ri), log-cons(log, fs), orphans-cons(fs, ri, orphans(fs, ri)), replay-cons-strong(fs, ri, orphans(fs, ri), fi, fo, log), ri-inj(fi), ri-inj(ri), ubifs-cons(fs, ri, orphans(fs, ri), fi, fo, log), inodekey(m) ∈ ri, ¬ fs[ri[inodekey(m)]].directory, ¬ datakey(m, pageno) ∈ ri, asynced → boolvar2 ⊦ ⟨buf := zeropage; err := ESUCCESS⟩ ((asynced → boolvar2) ∧ fill(buf0, zero) = buf ∧ ESUCCESS = err), ⟨fail#(; ; err)⟩ ((asynced → boolvar2) ∧ fill(buf0, zero) = buf0 ∧ ESUCCESS = err)

Rule argument

Additional information

Used simplifier rules: ⊦ n ∈ abs-content(ino, fs, ri) ↔ datakey(ino, n) ∈ ri; (s)%⊦ mkfile(m, md, m0, content) = mkfile(m1, md0, m2, content0) ↔ m = m1 ∧ md = md0 ∧ m0 = m2 ∧ content = content0; (ws)%⊦ abs-file(ino, fs, ri) = mkfile (fs[ri[inodekey(ino)]].size, fs[ri[inodekey(ino)]].meta, fs[ri[inodekey(ino)]].nlink, abs-content(ino, fs, ri)); (s)