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Proof step 18 from proof getintarray-subset (previous step)

is_array(r, st), st ⊆ st0 ⊦ getintarray(r, st) = getintarray(r, st0)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ st ⊆ st0 ∧ is_arrayref(r, st[r -- _length] .intval, st) ∧ r -- _length ∈ st → getintarray(r, st) = getintarray(r, st0)
Proof step 17:
¬ (st ⊆ st0 ∧ is_arrayref(r, st[r -- _length] .intval, st) ∧ r -- _length ∈ st), is_array(r, st), st ⊆ st0 ⊦ getintarray(r, st) = getintarray(r, st0)

Rule argument

[speclemmaarg: , st ⊆ st0 ∧ is_arrayref(r, st[r -- _length] .intval, st) ∧ r -- _length ∈ st → getintarray(r, st) = getintarray(r, st0) ,[st0, st, r] → [st0, st, r] ,F ,storearrays , ,getintarray-subset ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st0, st, r)]]