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Proof step 7 from proof validref-put-badclassfield (previous step)

st[r0 -- _type] .type = mkclasstype(class), validref(str, r, ty, st) ⊦ fs ' = _type, r = jvmref ∨ (st[r0 -- fs ', val][r -- _type]) .type ≤ ty ∧ ¬ junkref(str, r, st[r0 -- fs ', val]), fs ' ∈ instfields(class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
st[r0 -- _type] .type = mkclasstype(class), validref(str, r, ty, st) ⊦ fs ' = _type, r = jvmref, fs ' ∈ instfields(class), st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st[r0 -- fs ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ sk ≠ sk0 → (st[r -- sk, val][r0 -- sk0]) = st[r0 -- sk0]])]]