Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:53:17 2012

Optimize a model with 139 rows, 329 columns and 329 nonzeros
Model has 276 quadratic constraints
Presolve time: 1.61s
Presolved: 139 rows, 329 columns, 329 nonzeros
Variable types: 276 continuous, 53 integer (53 binary)

Root relaxation: objective 0.000000e+00, 26 iterations, 0.00 seconds

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

H    0     0                      76.0000000          -     -      -    1s
     0     0    0.00000    0   35   76.00000    0.00000   100%     -    1s
     0     0    0.19149    0   47   76.00000    0.19149   100%     -    1s
     0     2    0.20588    0   47   76.00000    0.20588   100%     -    1s
H   51    47                      42.0000000    7.28571  82.7%  26.1    1s
*   74    45              15      34.0000000    7.40000  78.2%  26.6    1s
* 1014   326              55      33.0000000   17.28571  47.6%  32.2    3s
H 1936   485                      32.0000000   20.00000  37.5%  24.6    3s
* 2910   603              47      31.0000000   22.50000  27.4%  21.6    4s
  3140   605     cutoff   42        31.00000   23.31034  24.8%  21.3    5s

Explored 5252 nodes (98806 simplex iterations) in 7.60 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%