Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:21 2012 Optimize a model with 1 rows, 19 columns and 19 nonzeros Model has 86 quadratic objective terms Modified 19 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 19 columns, 19 nonzeros Presolved model has 105 quadratic objective terms Variable types: 0 continuous, 19 integer (19 binary) Found heuristic solution: objective 48.0000000 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 19 48.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 2 3.63842 0 19 37.00000 3.63842 90.2% - 0s H 140 94 36.0000000 9.65525 73.2% 2.0 0s * 282 168 13 35.0000000 11.50591 67.1% 2.1 0s * 494 228 10 33.0000000 15.42716 53.3% 2.1 0s Explored 4302 nodes (9019 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%