Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:23:45 2012 Optimize a model with 186 rows, 398 columns and 398 nonzeros Model has 370 quadratic constraints Presolve time: 2.15s Presolved: 186 rows, 398 columns, 398 nonzeros Variable types: 370 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 0 100.0000000 - - - 2s 0 0 0.00000 0 26 100.00000 0.00000 100% - 2s 0 0 0.50000 0 28 100.00000 0.50000 100% - 2s 0 0 0.50000 0 28 100.00000 0.50000 100% - 2s 0 2 0.50000 0 28 100.00000 0.50000 100% - 2s H 47 47 83.0000000 8.25000 90.1% 38.0 2s * 86 75 20 82.0000000 8.47222 89.7% 38.4 2s H 119 95 79.0000000 14.46667 81.7% 39.6 2s H 297 227 77.0000000 17.78509 76.9% 42.0 2s * 300 222 18 74.0000000 17.78509 76.0% 41.6 2s 1062 513 70.56250 40 232 74.00000 32.66667 55.9% 47.0 5s 6118 1846 55.08632 43 207 74.00000 48.66667 34.2% 26.6 10s H 6667 1909 73.0000000 49.35294 32.4% 26.2 10s 8781 2055 63.56250 41 199 73.00000 52.70000 27.8% 25.2 15s H 8976 2028 72.0000000 53.00000 26.4% 25.2 17s 11178 2009 68.18474 40 219 72.00000 55.80000 22.5% 24.7 20s 15787 1614 69.89669 49 194 72.00000 60.30769 16.2% 23.8 25s Explored 20859 nodes (470504 simplex iterations) in 29.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.200000000000e+01, best bound 7.200000000000e+01, gap 0.0%