Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:06 2012 Optimize a model with 1 rows, 18 columns and 18 nonzeros Model has 86 quadratic objective terms Modified 18 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 18 columns, 18 nonzeros Presolved model has 104 quadratic objective terms Variable types: 0 continuous, 18 integer (18 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 20 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 18 51.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 2 3.22654 0 18 39.00000 3.22654 91.7% - 0s H 71 51 37.0000000 8.36935 77.4% 2.1 0s H 164 106 36.0000000 9.53598 73.5% 2.1 0s H 668 298 35.0000000 16.23999 53.6% 2.1 0s H 670 283 33.0000000 16.23999 50.8% 2.1 0s Explored 3341 nodes (6860 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%