Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:50 2012 Optimize a model with 1 rows, 22 columns and 22 nonzeros Model has 123 quadratic objective terms Modified 22 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 22 columns, 22 nonzeros Presolved model has 145 quadratic objective terms Variable types: 0 continuous, 22 integer (22 binary) Found heuristic solution: objective 67.0000000 Root relaxation: objective 0.000000e+00, 24 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 22 67.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 2 3.41360 0 22 54.00000 3.41360 93.7% - 0s * 176 141 20 53.0000000 10.61453 80.0% 2.2 0s H 270 217 51.0000000 12.63533 75.2% 2.2 0s * 326 248 13 49.0000000 13.47573 72.5% 2.2 0s H 732 387 47.0000000 17.37035 63.0% 2.2 0s Explored 17821 nodes (36822 simplex iterations) in 1.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%