Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:53:32 2012

Optimize a model with 1 rows, 48 columns and 48 nonzeros
Model has 116 quadratic objective terms
Modified 48 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 48 columns, 48 nonzeros
Presolved model has 164 quadratic objective terms
Variable types: 0 continuous, 48 integer (48 binary)
Found heuristic solution: objective 59.0000000

Root relaxation: objective 0.000000e+00, 50 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   48   59.00000    0.00000   100%     -    0s
H    0     0                      53.0000000    0.00000   100%     -    0s
H    0     0                      50.0000000    0.00000   100%     -    0s
H    0     0                      45.0000000    0.00000   100%     -    0s
H    0     0                      41.0000000    0.00000   100%     -    0s
H    0     0                      29.0000000    0.00000   100%     -    0s
     0     2    2.15280    0   48   29.00000    2.15280  92.6%     -    0s
H  101    81                      27.0000000    4.76603  82.3%   2.8    0s
H  568   358                      23.0000000    5.92591  74.2%   2.7    0s

Explored 45370 nodes (115314 simplex iterations) in 3.99 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%