Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:23:37 2012

Optimize a model with 154 rows, 377 columns and 377 nonzeros
Model has 306 quadratic constraints
Presolve time: 1.79s
Presolved: 154 rows, 377 columns, 377 nonzeros
Variable types: 306 continuous, 71 integer (71 binary)

Root relaxation: objective 0.000000e+00, 35 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    6   81.00000    0.00000   100%     -    1s
     0     0    0.00000    0    8   81.00000    0.00000   100%     -    1s
     0     0    0.00000    0   56   81.00000    0.00000   100%     -    1s
     0     2    0.00000    0   56   81.00000    0.00000   100%     -    1s
H   45    45                      37.0000000    4.18056  88.7%  39.0    1s
*   46    46              28      35.0000000    4.18056  88.1%  38.7    1s
*  159   101              19      30.0000000    6.00000  80.0%  28.7    1s
*  497   173              12      28.0000000   15.09091  46.1%  31.2    2s
  2460   391   22.09524   32  237   28.00000   20.77778  25.8%  25.1    5s

Explored 4333 nodes (90350 simplex iterations) in 6.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%