Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:22:47 2012 Optimize a model with 192 rows, 410 columns and 410 nonzeros Model has 382 quadratic constraints Presolve time: 2.22s Presolved: 192 rows, 410 columns, 410 nonzeros Variable types: 382 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 97.0000000 - - - 2s 0 0 0.00000 0 26 97.00000 0.00000 100% - 2s 0 0 0.75000 0 28 97.00000 0.75000 99.2% - 2s 0 0 0.75000 0 28 97.00000 0.75000 99.2% - 2s 0 2 0.75000 0 28 97.00000 0.75000 99.2% - 2s * 40 40 23 83.0000000 6.78261 91.8% 40.2 2s H 75 67 82.0000000 7.00000 91.5% 41.6 2s * 112 86 19 81.0000000 15.25000 81.2% 42.1 2s * 114 82 17 79.0000000 15.25000 80.7% 41.4 2s H 470 269 78.0000000 30.02273 61.5% 40.8 2s 1107 499 71.33333 35 227 78.00000 35.93750 53.9% 48.0 5s * 4632 1647 44 77.0000000 44.06250 42.8% 28.5 8s * 5600 1785 37 76.0000000 46.80000 38.4% 28.0 9s 5882 1821 74.00000 37 202 76.00000 47.10526 38.0% 27.9 10s H 6516 1769 74.0000000 48.12500 35.0% 27.5 11s H 6598 1709 73.0000000 48.35714 33.8% 27.5 12s 7765 1772 56.47368 33 244 73.00000 51.42857 29.5% 27.3 15s 11680 1663 66.00000 37 218 73.00000 57.88889 20.7% 26.4 20s 15778 941 69.23529 34 223 73.00000 64.57895 11.5% 25.6 25s Explored 17311 nodes (430450 simplex iterations) in 26.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.300000000000e+01, best bound 7.300000000000e+01, gap 0.0%