Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:20:00 2012

Optimize a model with 1 rows, 51 columns and 51 nonzeros
Model has 118 quadratic objective terms
Modified 50 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 51 columns, 51 nonzeros
Presolved model has 168 quadratic objective terms
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 56.0000000

Root relaxation: objective 0.000000e+00, 54 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   56.00000    0.00000   100%     -    0s
H    0     0                      38.0000000    0.00000   100%     -    0s
H    0     0                      29.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   50   29.00000    0.00000   100%     -    0s
H   27    27                      28.0000000    2.75993  90.1%   2.6    0s
H  162   113                      24.0000000    3.82499  84.1%   2.7    0s
H  634   437                      23.0000000    5.24022  77.2%   2.6    0s
 58622 11459   19.78407   21   39   23.00000   18.53865  19.4%   2.6    5s

Explored 116254 nodes (303060 simplex iterations) in 9.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%