Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:01:32 2012 Optimize a model with 152 rows, 327 columns and 327 nonzeros Model has 302 quadratic constraints Presolve time: 1.76s Presolved: 152 rows, 327 columns, 327 nonzeros Variable types: 302 continuous, 25 integer (25 binary) Root relaxation: objective 0.000000e+00, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 74.0000000 - - - 1s 0 0 0.00000 0 24 74.00000 0.00000 100% - 1s 0 0 0.57200 0 25 74.00000 0.57200 99.2% - 1s 0 2 0.62000 0 25 74.00000 0.62000 99.2% - 1s H 32 32 68.0000000 7.10000 89.6% 39.8 1s H 32 32 67.0000000 7.10000 89.4% 39.8 1s * 36 32 20 66.0000000 7.10000 89.2% 36.7 1s * 89 72 16 64.0000000 10.35514 83.8% 33.6 1s H 129 105 63.0000000 10.40625 83.5% 35.1 1s H 217 170 61.0000000 14.07143 76.9% 34.8 1s * 1637 448 45 60.0000000 29.53333 50.8% 33.1 4s 2718 738 47.50000 33 187 60.00000 34.09091 43.2% 28.2 5s 6958 906 54.06667 35 184 60.00000 46.62500 22.3% 23.3 10s Explored 10679 nodes (227826 simplex iterations) in 13.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0%