Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:54:29 2013

Optimize a model with 352 rows, 10272 columns and 20512 nonzeros
Presolve time: 0.01s
Presolved: 352 rows, 10272 columns, 20512 nonzeros
Variable types: 10240 continuous, 32 integer (32 binary)

Root relaxation: objective 3.103110e+04, 473 iterations, 0.01 seconds

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

     0     0 31031.0996    0    8          - 31031.0996     -      -    0s
H    0     0                    32262.000000 31031.0996  3.82%     -    0s
H    0     0                    31593.000000 31031.0996  1.78%     -    0s
     0     0 31409.8755    0    6 31593.0000 31409.8755  0.58%     -    0s
     0     0 31417.6579    0    4 31593.0000 31417.6579  0.56%     -    0s
     0     0 31418.1531    0    4 31593.0000 31418.1531  0.55%     -    0s
     0     0 31418.4361    0    3 31593.0000 31418.4361  0.55%     -    0s
     0     0 31418.4361    0    3 31593.0000 31418.4361  0.55%     -    0s
     0     2 31422.8191    0    3 31593.0000 31422.8191  0.54%     -    0s
*    9     3               8    31586.000000 31441.1961  0.46%  17.0    0s
H   10     2                    31497.333333 31441.1961  0.18%  15.3    0s
*   11     1               4    31464.000000 31464.0000   0.0%  16.5    0s

Cutting planes:
  Implied bound: 72
  Flow cover: 10

Explored 12 nodes (832 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.146400000000e+04, best bound 3.146400000000e+04, gap 0.0%