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Proof step 11 from proof newrefs-butlast-01 (previous step)

∀ st. newref_list(m + 1, st) .butlast = newref_list(m, st) ⊦ newref_list(1 + m, st[newref(st) -- 0 ', noval]) = [], newref_list(1 + m, st[newref(st) -- 0 ', noval]) .butlast = newref_list(m, st[newref(st) -- 0 ', noval])

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 1, [QUANTTERMLIST : (st[newref(st) -- 0 ', noval])]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ m + n = n + m])], [EXTRATERMS : (st[newref(st) -- 0 ', noval])]]