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Proof step 57 from proof subset-size (previous step)

rk = r -- sk, # st0 .refs < # (st1 .refs ++ r), st1[rk, val] ⊆ st0, ∀ st. # st1 .refs ≤ # st .refs ∨ ¬ st1 ⊆ st ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 56:
st1[r -- sk, val] ⊆ st0, # st0 .refs < # (st1 .refs ++ r), ∀ st. # st1 .refs ≤ # st .refs ∨ ¬ st1 ⊆ st ⊦

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ m < n → n ≠ 0], [CSIMPFORWARD : ⊦ m < n → n ≠ 0])]]