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Proof step 16 from proof newrefs-butlast-01 (previous step)

∀ st. newref_list(m + 1, st) .butlast = newref_list(m, st) ⊦ newref_list(2 + m, st) .butlast = newref(st) + newref_list(m, st[newref(st) -- 0 ', noval])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 15:
∀ st. newref_list(m + 1, st) .butlast = newref_list(m, st) ⊦ newref_list(2 + m, st) .butlast = newref(st) ' + newref_list(m, st[newref(st) -- 0 ', noval])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r + refs = r ' + refs])]]