Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:53:16 2012

Optimize a model with 1 rows, 48 columns and 48 nonzeros
Model has 102 quadratic objective terms
Modified 47 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 48 columns, 48 nonzeros
Presolved model has 149 quadratic objective terms
Variable types: 0 continuous, 48 integer (48 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 0.000000e+00, 51 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   47   51.00000    0.00000   100%     -    0s
H    0     0                      50.0000000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
H    0     0                      29.0000000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   47   27.00000    0.00000   100%     -    0s
H  125    94                      24.0000000    3.81478  84.1%   2.9    0s
H  630   436                      23.0000000    5.25880  77.1%   2.8    0s
H  644   425                      22.0000000    5.25880  76.1%   2.8    0s
 64226  8261   20.78796   29   25   22.00000   18.72660  14.9%   2.6    5s

Explored 90662 nodes (237946 simplex iterations) in 7.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%