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Proof step 47 from proof inv-replay (previous step)

fs0[replay-log(log0, fs0, fi0 ⊖ fo0)[inodekey(ino)]].nlink = 0, replay-log(log0, fs0, fi0 ⊖ fo0) = (ri \ ro) \ datakeys(ro, ri), ro.inodes?, fo0.inodes?, file-node-cons(fs0, ri), log-cons(log0, fs0), orphans-cons(fs0, ri, ro), replay-safe(log0, fs0, fi0 ⊖ fo0), ri-closed(ri, fs0, ro), ri-cons(ri, fs0), ri-inj(fi0), ri-inj(ri), inodekey(ino) ∈ replay-log(log0, fs0, fi0 ⊖ fo0), fo0 ⊆ dom fi0, ro ⊆ dom ri, inodekey(ino) ∈ ri → (fs0[ri[inodekey(ino)]].nlink = 0 ↔ inodekey(ino) ∈ ro) ⊦ ino = ROOT_INO, dups(log0), inodekey(0) ∈ ri, key ∈ ri ∧ ¬ key ∈ ro ∧ ¬ key.data?

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: aubifs-base name: dels-with-data seq: ⊦ ri ⊖ ks = (ri \ ks) \ datakeys(ks, ri) subst: [ks, ri] → [fo0, fi0] flags: <all paths>

Additional information

Used simplifier rules: at-diff-ri: ⊦ (ri \ ks)[key] = (key ∈ ks ⊃ (∅)[key];ri[key]);%⊦ key ∈ datakeys(ks, ri) ↔ key ∈ ri ∧ key.data? ∧ inodekey(key.ino) ∈ ks; (s)% ⊦ ¬ inodekey(m).data?; (s)% ⊦ key ∈ ri \ ks ↔ key ∈ ri ∧ ¬ key ∈ ks; (ls) Used terms: fo0, fi0