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Proof step 19 from proof switch-class (previous step)

is_fskey(_length) ⊦ r = jvmref, (addarray(r, vals, 0, addclass(class, fis, st)[r -- _type, typeval(mkarraytype(ty))])[r -- _length, intval(n→i(# vals))]) = addclass(class, fis, addarray(r, vals, 0, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(n→i(# vals))]))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
⊦ r = jvmref, (addarray(r, vals, 0, addclass(class, fis, st)[r -- _type, typeval(mkarraytype(ty))])[r -- _length, intval(n→i(# vals))]) = addclass(class, fis, addarray(r, vals, 0, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(n→i(# vals))]))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(_length)])]]