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Proof step 13 from proof validref-forward-array (previous step)

¬ (r ≠ jvmref ∧ (¬ is_valid_ref(str, r, st0) ∨ ¬ st0[r -- _type] .type ≤ mkarraytype(ty))), st0[r -- i '] = refval(r0), 0 < st0[r -- _length] .intval, 0 ≤ i, i < st0[r -- _length] .intval, validref(str, r, mkarraytype(ty), st0) ⊦ r = jvmref, validref(str, r0, ty, st0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 12:
st0[r -- i '] = refval(r0), 0 < st0[r -- _length] .intval, 0 ≤ i, i < st0[r -- _length] .intval, validref(str, r, mkarraytype(ty), st0), is_valid_ref(str, r, st0), is_arraytype(st0[r -- _type] .type), st0[r -- _type] .type .type ≤ ty ⊦ r = jvmref, validref(str, r0, ty, st0)

Rule argument

[emptyarg]

Additional information

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