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1# Check that the most appropriate lower bound is selected2[t1,t2]->{ S[i,j] -> [i,j] : exists (alpha, beta :3 0 <= i <= 1 &&4 t1 = j+128alpha &&5 0 <= j+2beta < 128 &&6 510 <= t2+2beta <= 514 &&7 0 <= 2beta - t2 <= 58)}9[t1,t2] -> {: 125 <= t1 <= 127 and 254 <= t2 < 257}10{[i,j] -> unroll[x]}11