Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:21 2012

Optimize a model with 1 rows, 19 columns and 19 nonzeros
Model has 81 quadratic objective terms
Modified 19 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 19 columns, 19 nonzeros
Presolved model has 100 quadratic objective terms
Variable types: 0 continuous, 19 integer (19 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 0.000000e+00, 21 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   19   44.00000    0.00000   100%     -    0s
H    0     0                      38.0000000    0.00000   100%     -    0s
H    0     0                      37.0000000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
     0     2    2.12359    0   19   34.00000    2.12359  93.8%     -    0s
*  311   173              12      32.0000000   10.52325  67.1%   2.1    0s
H  586   264                      31.0000000   13.26883  57.2%   2.1    0s

Explored 4835 nodes (10060 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%