Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:26 2012

Optimize a model with 161 rows, 489 columns and 489 nonzeros
Model has 320 quadratic constraints
Presolve removed 0 rows and 28 columns
Presolve time: 1.87s
Presolved: 161 rows, 461 columns, 461 nonzeros
Variable types: 320 continuous, 141 integer (140 binary)

Root relaxation: objective 0.000000e+00, 57 iterations, 0.00 seconds

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

H    0     0                      81.0000000          -     -      -    1s
     0     0    0.00000    0   63   81.00000    0.00000   100%     -    1s
     0     0    0.00000    0   85   81.00000    0.00000   100%     -    1s
     0     0    0.00000    0   15   81.00000    0.00000   100%     -    1s
     0     2    0.00000    0  122   81.00000    0.00000   100%     -    1s
*   17    13              12       6.0000000    1.14118  81.0%  73.9    2s

Cutting planes:

Explored 223 nodes (7115 simplex iterations) in 2.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%