Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:58:24 2012

Optimize a model with 138 rows, 329 columns and 329 nonzeros
Model has 274 quadratic constraints
Presolve time: 1.60s
Presolved: 138 rows, 329 columns, 329 nonzeros
Variable types: 274 continuous, 55 integer (55 binary)

Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds

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

H    0     0                      75.0000000          -     -      -    1s
     0     0    0.00000    0   21   75.00000    0.00000   100%     -    1s
     0     0    0.00000    0   35   75.00000    0.00000   100%     -    1s
     0     0    0.00000    0   35   75.00000    0.00000   100%     -    1s
     0     2    0.00000    0   34   75.00000    0.00000   100%     -    1s
H   46    46                      43.0000000    5.82628  86.5%  33.2    1s
*   77    52              16      35.0000000    6.03922  82.7%  30.4    1s
H  142    96                      34.0000000    6.21385  81.7%  26.9    1s
*  142    90              24      33.0000000    6.21385  81.2%  27.0    1s
*  922   345              47      32.0000000   16.19579  49.4%  34.6    3s
* 1528   273              36      31.0000000   19.29412  37.8%  28.6    3s
  2961    85   28.50000   41  175   31.00000   27.50000  11.3%  23.4    5s

Explored 3092 nodes (71274 simplex iterations) in 5.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%