Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:20 2012 Optimize a model with 1 rows, 42 columns and 42 nonzeros Model has 87 quadratic objective terms Modified 41 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 42 columns, 42 nonzeros Presolved model has 128 quadratic objective terms Variable types: 0 continuous, 42 integer (42 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 45 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 41 41.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 2 0.00000 0 41 23.00000 0.00000 100% - 0s H 17 17 22.0000000 2.91667 86.7% 2.5 0s H 164 115 19.0000000 3.95789 79.2% 3.0 0s H 191 130 18.0000000 3.95789 78.0% 3.0 0s H 627 368 17.0000000 5.62614 66.9% 3.0 0s Explored 7714 nodes (20830 simplex iterations) in 0.60 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%