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Proof step 10 from proof unchanged-field-lookup (previous step)

¬ is_indexkey(sk), is_obj(str, r, st), sk ∈ instfields(st[r -- _type] .type .class), unchanged(str, r, st, st1) ⊦ r = jvmref, st[r -- sk] = st1[r -- sk]

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
is_obj(str, r, st), sk ∈ instfields(st[r -- _type] .type .class), unchanged(str, r, st, st1), is_fskey(sk) ⊦ r = jvmref, st[r -- sk] = st1[r -- sk]

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_indexkey(sk) ↔ is_fskey(sk)])]]