Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:20 2012

Optimize a model with 168 rows, 512 columns and 512 nonzeros
Model has 334 quadratic constraints
Presolve removed 0 rows and 23 columns
Presolve time: 1.95s
Presolved: 168 rows, 489 columns, 489 nonzeros
Variable types: 334 continuous, 155 integer (154 binary)

Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds

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

H    0     0                      73.0000000          -     -      -    1s
     0     0    0.00000    0   72   73.00000    0.00000   100%     -    1s
     0     0    0.00000    0  111   73.00000    0.00000   100%     -    1s
     0     0    0.00000    0  108   73.00000    0.00000   100%     -    2s
     0     2    0.00000    0  108   73.00000    0.00000   100%     -    2s
H   27    27                      21.0000000    0.85108  95.9%  31.3    2s
H   47    47                      11.0000000    0.85108  92.3%  21.7    2s
*   90    60              20      10.0000000    1.42024  85.8%  18.1    2s
H  138    64                       9.0000000    2.14349  76.2%  18.3    2s
*  398   103              14       8.0000000    3.44549  56.9%  16.6    2s
H  422   104                       8.0000000    3.73984  53.3%  16.7    2s
*  423    75              11       7.0000000    3.73984  46.6%  16.7    2s

Cutting planes:
  Gomory: 3

Explored 702 nodes (13041 simplex iterations) in 2.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%