Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:24:37 2012 Optimize a model with 188 rows, 402 columns and 402 nonzeros Model has 374 quadratic constraints Presolve time: 2.18s Presolved: 188 rows, 402 columns, 402 nonzeros Variable types: 374 continuous, 28 integer (28 binary) Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 96.0000000 - - - 2s 0 0 0.00000 0 24 96.00000 0.00000 100% - 2s 0 0 0.45455 0 28 96.00000 0.45455 100% - 2s 0 0 0.45455 0 28 96.00000 0.45455 100% - 2s 0 2 0.45455 0 28 96.00000 0.45455 100% - 2s * 37 37 19 80.0000000 9.33333 88.3% 46.7 2s H 112 94 79.0000000 16.57576 79.0% 41.1 2s H 216 155 74.0000000 23.14205 68.7% 45.6 2s * 451 247 15 73.0000000 29.74126 59.3% 43.9 2s 1275 487 50.09524 29 234 73.00000 35.45455 51.4% 45.1 5s * 3442 880 38 70.0000000 46.09375 34.2% 31.6 7s H 3526 853 69.0000000 46.50000 32.6% 31.4 7s H 4973 912 68.0000000 52.00000 23.5% 28.4 8s 5513 885 62.22222 32 219 68.00000 53.27273 21.7% 27.8 10s Explored 8667 nodes (215057 simplex iterations) in 14.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0%