Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:55 2012

Optimize a model with 135 rows, 342 columns and 342 nonzeros
Model has 268 quadratic constraints
Presolve removed 0 rows and 1 columns
Presolve time: 1.56s
Presolved: 135 rows, 341 columns, 341 nonzeros
Variable types: 268 continuous, 73 integer (72 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                      71.0000000          -     -      -    1s
     0     0    0.00000    0    3   71.00000    0.00000   100%     -    1s
     0     0    0.00000    0   69   71.00000    0.00000   100%     -    1s
     0     0    0.00000    0   68   71.00000    0.00000   100%     -    1s
     0     2    0.00000    0   68   71.00000    0.00000   100%     -    1s
H   16    16                      51.0000000    4.30435  91.6%  48.1    1s
H   44    42                      24.0000000    4.30435  82.1%  29.1    1s
*   49    39              25      23.0000000    4.30435  81.3%  26.9    1s
*   76    58              19      22.0000000    4.88571  77.8%  25.1    1s
*   78    49              20      21.0000000    4.88571  76.7%  24.7    1s

Cutting planes:

Explored 1372 nodes (32849 simplex iterations) in 2.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%