Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:42:48 2012 Optimize a model with 1 rows, 52 columns and 52 nonzeros Model has 117 quadratic objective terms Modified 51 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 52 columns, 52 nonzeros Presolved model has 168 quadratic objective terms Variable types: 0 continuous, 52 integer (52 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 55 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 51 57.00000 0.00000 100% - 0s H 0 0 39.0000000 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 25.0000000 0.00000 100% - 0s 0 2 0.00000 0 51 25.00000 0.00000 100% - 0s H 27 27 24.0000000 2.51892 89.5% 2.9 0s 58570 15236 19.79354 22 36 24.00000 18.55873 22.7% 2.7 5s 117504 15850 22.01568 27 32 24.00000 20.24539 15.6% 2.7 10s Explored 175668 nodes (467559 simplex iterations) in 14.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%