Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:35 2012 Optimize a model with 1 rows, 15 columns and 15 nonzeros Model has 45 quadratic objective terms Modified 15 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 15 columns, 15 nonzeros Presolved model has 60 quadratic objective terms Variable types: 0 continuous, 15 integer (15 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 17 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 15 21.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 2 1.60188 0 15 17.00000 1.60188 90.6% - 0s * 362 86 9 16.0000000 9.66729 39.6% 2.1 0s Explored 799 nodes (1700 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%