Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:18:59 2012

Optimize a model with 107 rows, 272 columns and 272 nonzeros
Model has 212 quadratic constraints
Presolve time: 1.24s
Presolved: 107 rows, 272 columns, 272 nonzeros
Variable types: 212 continuous, 60 integer (60 binary)

Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds

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

H    0     0                      51.0000000          -     -      -    1s
     0     0    0.00000    0   19   51.00000    0.00000   100%     -    1s
     0     0    0.00000    0   11   51.00000    0.00000   100%     -    1s
     0     0    0.00000    0   56   51.00000    0.00000   100%     -    1s
     0     2    0.00000    0   56   51.00000    0.00000   100%     -    1s
H    8     8                      49.0000000    3.75000  92.3%  50.8    1s
*   32    30              19      18.0000000    3.75000  79.2%  34.3    1s

Cutting planes:

Explored 1250 nodes (27412 simplex iterations) in 1.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%