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Proof step 7 from proof validrefnotnull-getarray-subset (previous step)

validrefnotnull(str, r, mkarraytype(ty), st), i + j ≤ st[r -- _length] .intval, st ⊆ st1, 0 ≤ i ⊦ getarray(r, i, j, st) = getarray(r, i, j, st1), r = jvmref, is_arrayref(r, i + j, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ validrefnotnull(str, r, ty, st) ↔ r ≠ jvmref ∧ validref(str, r, ty, st)
Proof step 6:
r ≠ jvmref ∧ validref(str, r, mkarraytype(ty), st), i + j ≤ st[r -- _length] .intval, st ⊆ st1, 0 ≤ i ⊦ getarray(r, i, j, st) = getarray(r, i, j, st1), r = jvmref, is_arrayref(r, i + j, st)

Rule argument

[crewrite-arg: validrefnotnull-def , F , [st, ty, r, str] → [st, mkarraytype(ty), r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, mkarraytype(ty), r, str)]]