Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:22:17 2012 Optimize a model with 190 rows, 406 columns and 406 nonzeros Model has 378 quadratic constraints Presolve time: 2.20s Presolved: 190 rows, 406 columns, 406 nonzeros Variable types: 378 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 98.0000000 - - - 2s 0 0 0.00000 0 26 98.00000 0.00000 100% - 2s 0 0 0.50000 0 28 98.00000 0.50000 99.5% - 2s 0 0 0.50000 0 28 98.00000 0.50000 99.5% - 2s 0 2 0.50000 0 28 98.00000 0.50000 99.5% - 2s H 8 8 93.0000000 6.68750 92.8% 52.0 2s * 39 39 21 82.0000000 6.68750 91.8% 41.4 2s H 74 62 79.0000000 6.91667 91.2% 43.2 2s * 78 64 21 78.0000000 6.91667 91.1% 41.5 2s H 106 84 77.0000000 13.51667 82.4% 43.2 2s H 151 121 76.0000000 13.62698 82.1% 43.7 2s 1138 504 54.00000 31 237 76.00000 29.81944 60.8% 49.0 5s * 4856 1567 35 75.0000000 43.23077 42.4% 30.9 9s 5698 1665 63.25000 29 221 75.00000 45.28571 39.6% 30.1 10s H 6881 1811 74.0000000 47.77778 35.4% 29.3 11s 7209 1858 72.50000 39 195 74.00000 48.83333 34.0% 29.1 15s 11032 2010 66.70588 27 232 74.00000 55.12500 25.5% 27.9 20s 15619 1692 71.93750 39 220 74.00000 60.14286 18.7% 26.9 25s 20030 439 cutoff 48 74.00000 68.15385 7.90% 26.3 30s Explored 20655 nodes (533994 simplex iterations) in 30.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.400000000000e+01, best bound 7.400000000000e+01, gap 0.0%