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Proof step 7 from proof validref-isarrayref (previous step)

¬ (r ≠ jvmref ∧ (¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ mkarraytype(ty))), i ≤ st[r -- _length] .intval, validref(str, r, mkarraytype(ty), st) ⊦ r = jvmref, is_arrayref(r, i, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
i ≤ st[r -- _length] .intval, validref(str, r, mkarraytype(ty), st), is_valid_ref(str, r, st), is_arraytype(st[r -- _type] .type), st[r -- _type] .type .type ≤ ty ⊦ r = jvmref, is_arrayref(r, i, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ty0 ≤ mkarraytype(ty) ↔ is_arraytype(ty0) ∧ ty0 .type ≤ ty])]]