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Proof step 18 from proof copy-same-01 (previous step)

r2 ∈ st0, 0 < i3, okarray(r2, int_type, st0), 0 ≤ i, i < i3, 0 ≤ i2, i2 + i3 ≤ st0[r2 -- _length] .intval ⊦ r2 = jvmref, r1 = r2, (rk ∈ arraycopy(r1, i1, r2, i2, i3, st0[r2 -- (i2 + i) ', val]) ↔ rk ∈ arraycopy(r1, i1, r2, i2, i3, st0)) ∧ (arraycopy(r1, i1, r2, i2, i3, st0[r2 -- (i2 + i) ', val])[rk]) = (arraycopy(r1, i1, r2, i2, i3, st0)[rk])

User applied rule structural induction

And obtained the following new goals

Proof step 17:
⊦ r2 ∈ st0 ∧ 0 < i3 ∧ okarray(r2, int_type, st0) ∧ 0 ≤ i ∧ i < i3 ∧ 0 ≤ i2 ∧ i2 + i3 ≤ st0[r2 -- _length] .intval → r2 = jvmref ∨ r1 = r2 ∨ (r -- sk ∈ arraycopy(r1, i1, r2, i2, i3, st0[r2 -- (i2 + i) ', val]) ↔ r -- sk ∈ arraycopy(r1, i1, r2, i2, i3, st0)) ∧ (arraycopy(r1, i1, r2, i2, i3, st0[r2 -- (i2 + i) ', val])[r -- sk]) = (arraycopy(r1, i1, r2, i2, i3, st0)[r -- sk])

Rule argument

[VARWITHFMAVARSARG : rk, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : refkey generated by --;])]]