Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:19 2012 Optimize a model with 1 rows, 12 columns and 12 nonzeros Model has 30 quadratic objective terms Modified 12 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 12 columns, 12 nonzeros Presolved model has 42 quadratic objective terms Variable types: 0 continuous, 12 integer (12 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 0.000000e+00, 14 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 12 15.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.75825 0 12 12.00000 0.75825 93.7% - 0s H 21 10 9.0000000 3.03726 66.3% 2.0 0s Explored 78 nodes (177 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%