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Proof step 2 from proof ac-lookup-05 (previous step)

is_indexkey(sk) ⊦ (((r = jvmref ∧ sk = mkfs(class, void_type, `initstate' .field) ') ⊃ initval(done); st[r -- sk])) = st[r -- sk]

Heuristic if-then-else split applied rule case distinction

And closed the goal!

Rule argument

[CASEDARG : pos: right 1, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_indexkey(fs ')])]]