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Proof step 3 from proof path-links-empty (previous step)

ispath(p, ino, n, dirs, files) ⊦ # links(n, dirs) = 0 ↔ p = ε ∧ links(ino, dirs) = ∅

User applied rule cut formula

And obtained the following new goals

Proof step 4:
p = ε, ispath(p, ino, n, dirs, files) ⊦ # links(n, dirs) = 0 ↔ p = ε ∧ links(ino, dirs) = ∅
Proof step 6:
ispath(p, ino, n, dirs, files) ⊦ # links(n, dirs) = 0 ↔ p = ε ∧ links(ino, dirs) = ∅, p = ε

Rule argument

fma: p = ε

Additional information

Used formulas: p = ε