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Proof step 54 from proof getarray-subset (previous step)

¬ (r -- n→i(n) ' ∈ st ∧ st ⊆ st0), 0 < st0[r -- _length] .intval, n < i→n(st0[r -- _length] .intval), r ∈ st, r -- _length ∈ st, is_array(r, st), st ⊆ st0, n < # getarray(r, st0) ⊦ st0[r -- _length] .intval = 0, st[r -- n→i(n) '] = st0[r -- n→i(n) '], getarray(r, st0) = []

User applied rule prop simplification

And obtained the following new goals

Rule argument

[fmapos-arg: pos: left 1]

Additional information

[[CONCRETESIMPRULES : ()]]