Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:12:10 2012

Optimize a model with 1 rows, 50 columns and 50 nonzeros
Model has 105 quadratic objective terms
Modified 49 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 50 columns, 50 nonzeros
Presolved model has 154 quadratic objective terms
Variable types: 0 continuous, 50 integer (50 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 53 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   49   52.00000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   49   27.00000    0.00000   100%     -    0s
H    2     2                      24.0000000    0.52571  97.8%   2.0    0s
H   27    27                      20.0000000    1.30957  93.5%   2.7    0s
H  640   417                      19.0000000    3.44605  81.9%   3.0    0s

Explored 35299 nodes (94645 simplex iterations) in 3.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%