Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:03:51 2012

Optimize a model with 144 rows, 342 columns and 342 nonzeros
Model has 286 quadratic constraints
Presolve time: 1.67s
Presolved: 144 rows, 342 columns, 342 nonzeros
Variable types: 286 continuous, 56 integer (56 binary)

Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds

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

H    0     0                      79.0000000          -     -      -    1s
     0     0    0.00000    0   18   79.00000    0.00000   100%     -    1s
     0     0    0.00000    0   20   79.00000    0.00000   100%     -    1s
     0     0    0.00000    0   54   79.00000    0.00000   100%     -    1s
     0     2    0.00000    0   54   79.00000    0.00000   100%     -    1s
*   39    39              21      37.0000000    5.06250  86.3%  34.2    1s
H   69    50                      34.0000000    5.09091  85.0%  30.9    1s
*  207   144              17      33.0000000   10.00000  69.7%  34.0    1s
*  208   133              17      32.0000000   10.00000  68.8%  33.9    1s
H  314   127                      31.0000000   12.10802  60.9%  31.5    1s
  3032   522   29.57143   37  200   31.00000   22.72578  26.7%  24.2    5s

Explored 6008 nodes (120563 simplex iterations) in 7.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000041e+01, best bound 3.100000000041e+01, gap 0.0%