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Proof step 29 from proof okarray-okarray-01 (previous step)

⊦ okarray(refval(r), ty, i, st) ↔ okarray(r, ty, st) ∧ st[r -- _length] .intval = i

User applied rule case distinction

And obtained the following new goals

Proof step 3:
⊦ ¬ okarray(r, ty, st) → ¬ okarray(refval(r), ty, i, st)
Proof step 4:
⊦ okarray(refval(r), ty, i, st) → st[r -- _length] .intval = i
Proof step 5:
⊦ okarray(refval(r), ty, i, st) → r ≠ jvmref
Proof step 28:
okarray(r, ty, st) ∧ st[r -- _length] .intval = i ⊦ okarray(refval(r), ty, i, st)

Rule argument

[CASEDARG : pos: right 1, ()]

Additional information

[[CONCRETESIMPRULES : ()]]