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Proof step 17 from proof links-del-entry (previous step)

str ∈ entries, ino0 ∈ dirs ⊦ entries[str] = ino, ∀ alink. alink ∈ links(ino, dirs[ino0, mkdir(m, md, n0, n1, entries -- str)]) ↔ alink ∈ links(ino, dirs[ino0, mkdir(m, md, n0, n1, entries)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
ino0 ∈ dirs, str ∈ entries, alink.pino ∈ dirs ⊦ alink.name ∈ (alink.pino = ino0 ⊃ mkdir(m, md, n0, n1, entries -- str);dirs[alink.pino]).entries ∧ ino = (alink.pino = ino0 ⊃ mkdir(m, md, n0, n1, entries -- str);dirs[alink.pino]).entries[alink.name] ↔ alink.name ∈ (alink.pino = ino0 ⊃ mkdir(m, md, n0, n1, entries);dirs[alink.pino]).entries ∧ ino = (alink.pino = ino0 ⊃ mkdir(m, md, n0, n1, entries);dirs[alink.pino]).entries[alink.name], entries[str] = ino

Rule argument

Additional information

Used simplifier rules: links: ⊦ alink ∈ links(ino, dirs) ↔ alink.pino ∈ dirs ∧ alink.name ∈ dirs[alink.pino].entries ∧ ino = dirs[alink.pino].entries[alink.name];% ⊦ dirs[ino, ad][ino0] = (ino0 = ino ∧ ino ∈ dirs ⊃ ad;dirs[ino0]); (s)% ⊦ ino ∈ dirs[ino0, ad] ↔ ino ∈ dirs; (s)