Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:56:17 2012

Optimize a model with 129 rows, 304 columns and 304 nonzeros
Model has 256 quadratic constraints
Presolve time: 1.51s
Presolved: 129 rows, 304 columns, 304 nonzeros
Variable types: 256 continuous, 48 integer (48 binary)

Root relaxation: objective 0.000000e+00, 24 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

H    0     0                      63.0000000          -     -      -    1s
     0     0    0.00000    0   23   63.00000    0.00000   100%     -    1s
     0     0    0.00000    0   37   63.00000    0.00000   100%     -    1s
     0     0    0.00000    0   36   63.00000    0.00000   100%     -    1s
     0     2    0.00000    0   30   63.00000    0.00000   100%     -    1s
*   35    35              22      36.0000000    3.59259  90.0%  31.4    1s
*   37    35              23      35.0000000    3.59259  89.7%  30.3    1s
*   39    33              24      34.0000000    3.59259  89.4%  29.1    1s
*  133    91              17      31.0000000    6.00000  80.6%  31.6    1s

Explored 3359 nodes (74285 simplex iterations) in 4.47 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%