Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:09:07 2012 Optimize a model with 1 rows, 50 columns and 50 nonzeros Model has 113 quadratic objective terms Modified 50 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 50 columns, 50 nonzeros Presolved model has 163 quadratic objective terms Variable types: 0 continuous, 50 integer (50 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 0.000000e+00, 52 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 50 49.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 2 2.13278 0 50 31.00000 2.13278 93.1% - 0s H 6 6 27.0000000 2.67798 90.1% 1.8 0s H 72 54 26.0000000 2.68560 89.7% 2.7 0s H 672 444 25.0000000 5.91571 76.3% 2.8 0s H20738 7981 24.0000000 16.99526 29.2% 2.7 1s 64020 13266 19.75592 31 23 24.00000 19.75592 17.7% 2.6 5s Explored 123764 nodes (323119 simplex iterations) in 9.74 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%