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Proof step 4 from proof nouninit-undone (conclusion)

⊦ nouninit(claset, st) ∧ initundone(class, st) → ¬ class ∈ claset

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
initundone(class, st), nouninit(claset, st), class ∈ claset ⊦ claset = ∅, # claset = 0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ claset ≠ ∅ → # claset ≠ 0], [CSIMPFORWARD : ⊦ class ∈ claset → claset ≠ ∅])]]