Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:37 2012 Optimize a model with 1 rows, 37 columns and 37 nonzeros Model has 78 quadratic objective terms Modified 37 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 37 columns, 37 nonzeros Presolved model has 115 quadratic objective terms Variable types: 0 continuous, 37 integer (37 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 39 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 37 39.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 2 1.83919 0 37 20.00000 1.83919 90.8% - 0s H 45 37 19.0000000 3.29374 82.7% 2.8 0s H 475 294 18.0000000 5.34862 70.3% 2.7 0s H 686 389 17.0000000 5.91049 65.2% 2.8 0s Explored 6645 nodes (19034 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%