Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:04 2012

Optimize a model with 125 rows, 321 columns and 321 nonzeros
Model has 248 quadratic constraints
Presolve removed 0 rows and 2 columns
Presolve time: 1.44s
Presolved: 125 rows, 319 columns, 319 nonzeros
Variable types: 248 continuous, 71 integer (70 binary)

Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds

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

H    0     0                      64.0000000          -     -      -    1s
     0     0    0.00000    0   52   64.00000    0.00000   100%     -    1s
     0     0    0.27101    0   65   64.00000    0.27101   100%     -    1s
     0     2    0.27140    0   65   64.00000    0.27140   100%     -    1s
*   25    25              15      23.0000000    2.74613  88.1%  35.9    1s
H   46    37                      21.0000000    2.97716  85.8%  34.7    1s
H  144    88                      20.0000000    5.22000  73.9%  32.1    1s
*  358   108              12      19.0000000   10.60606  44.2%  27.0    1s
*  425    98              12      18.0000000   11.19742  37.8%  26.3    1s

Cutting planes:
  Gomory: 1

Explored 775 nodes (20581 simplex iterations) in 2.01 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%