Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:03 2012 Optimize a model with 1 rows, 39 columns and 39 nonzeros Model has 81 quadratic objective terms Modified 38 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 39 columns, 39 nonzeros Presolved model has 119 quadratic objective terms Variable types: 0 continuous, 39 integer (39 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 42 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 38 46.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 2 0.00000 0 38 19.00000 0.00000 100% - 0s H 297 215 18.0000000 4.92043 72.7% 2.8 0s H 644 359 17.0000000 5.96938 64.9% 2.8 0s Explored 6135 nodes (16712 simplex iterations) in 0.45 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%