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Proof step 12 from proof isobj-addclass (previous step)

sk = fs ', st[r -- _type] = typeval(mkclasstype(class)), okval(noval, fs .type), r -- sk ∈ addclass(class0, fis, st), is_fskey(sk), r ∈ st, r -- _type ∈ st, sk ∈ sks ⊦ class = class0, r = jvmref, r -- sk ∈ st

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
st[r -- _type] = typeval(mkclasstype(class)), okval(noval, fs .type), r -- fs ' ∈ addclass(class0, fis, st), r ∈ st, r -- _type ∈ st, fs ' ∈ sks ⊦ class = class0, r = jvmref, r -- fs ' ∈ st

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(fs ')])]]