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Proof step 3 from proof all-classes-01 (previous step)

∀ rk. rk ∈ rks ∧ is_fskey(rk .key) → # rk .key .fs .class .class < # str ⊦ ∀ r, ty, fieldvar. ¬ r -- mkfs(str .class, ty, fieldvar) ' ∈ rks

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
r -- mkfs(str .class, ty, fieldvar) ' ∈ rks, ∀ rk. rk ∈ rks ∧ is_fskey(rk .key) → # rk .key .fs .class .class < # str ⊦ rks = ∅, # rks = 0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ rks ≠ ∅ → # rks ≠ 0], [CSIMPFORWARD : ⊦ rk ∈ rks → rks ≠ ∅])]]