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Proof step 5 from proof okclass-copy (previous step)

⊦ reftypep(refval(r), arraycopy(r1, i, r0, i0, j, st)) ∧ (r ≠ jvmref → r -- _type ∈ st ∧ st[r -- _type] = typeval(mkclasstype(class1))) ↔ reftypep(refval(r), st) ∧ (refval(r) .refval ≠ jvmref → refval(r) .refval -- _type ∈ st ∧ st[refval(r) .refval -- _type] = typeval(mkclasstype(class1)))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
st[r -- _type] = typeval(mkclasstype(class1)), r ∈ st, r -- _type ∈ st ⊦ r = jvmref, reftypep(refval(r), arraycopy(r1, i, r0, i0, j, st))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r ∈ st → reftypep(refval(r), st)], [CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st], [CSIMPSEQ : ⊦ reftypep(refval(jvmref), st)], [CSIMPSEQ : ⊦ refval(r) .refval = r])]]