Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:01:22 2012 Optimize a model with 172 rows, 398 columns and 398 nonzeros Model has 342 quadratic constraints Presolve time: 2.00s Presolved: 172 rows, 398 columns, 398 nonzeros Variable types: 342 continuous, 56 integer (56 binary) Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 73.0000000 - - - 2s 0 0 0.00000 0 18 73.00000 0.00000 100% - 2s 0 0 0.00000 0 53 73.00000 0.00000 100% - 2s 0 0 0.00000 0 53 73.00000 0.00000 100% - 2s 0 2 0.00000 0 52 73.00000 0.00000 100% - 2s H 51 51 58.0000000 5.60000 90.3% 28.8 2s * 53 53 31 54.0000000 5.60000 89.6% 28.4 2s H 92 82 53.0000000 5.60000 89.4% 30.6 2s H 132 110 52.0000000 6.10149 88.3% 28.8 2s H 188 154 47.0000000 6.63416 85.9% 31.4 2s * 929 463 41 45.0000000 13.50000 70.0% 44.8 4s 1670 601 32.57447 38 221 45.00000 19.52632 56.6% 35.1 5s H 1974 676 44.0000000 20.54902 53.3% 32.8 5s 3957 1273 29.00000 32 242 44.00000 25.80000 41.4% 26.4 10s H 4804 1373 42.0000000 27.09524 35.5% 25.5 11s 7305 1536 cutoff 40 42.00000 30.31111 27.8% 23.6 15s 9924 1442 37.50000 30 226 42.00000 33.00000 21.4% 22.6 20s 13810 356 39.19048 47 220 42.00000 38.50000 8.33% 21.7 25s Explored 14282 nodes (306028 simplex iterations) in 25.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%