Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:58 2013

Optimize a model with 231 rows, 4431 columns and 8841 nonzeros
Presolve time: 0.01s
Presolved: 231 rows, 4431 columns, 8841 nonzeros
Variable types: 4410 continuous, 21 integer (21 binary)

Root relaxation: objective 3.098126e+04, 295 iterations, 0.00 seconds

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

     0     0 30981.2551    0    2          - 30981.2551     -      -    0s
H    0     0                    31033.000000 30981.2551  0.17%     -    0s
     0     0 30982.0571    0    1 31033.0000 30982.0571  0.16%     -    0s
     0     0 30982.0571    0    1 31033.0000 30982.0571  0.16%     -    0s
     0     0 30982.0571    0    1 31033.0000 30982.0571  0.16%     -    0s
     0     0 30982.0571    0    1 31033.0000 30982.0571  0.16%     -    0s
     0     0 30982.7419    0    1 31033.0000 30982.7419  0.16%     -    0s
     0     0 30982.8286    0    1 31033.0000 30982.8286  0.16%     -    0s
     0     0 30982.8286    0    1 31033.0000 30982.8286  0.16%     -    0s
     0     0 30982.8286    0    1 31033.0000 30982.8286  0.16%     -    0s
     0     0 30983.4286    0    1 31033.0000 30983.4286  0.16%     -    0s
     0     2 30983.6774    0    1 31033.0000 30983.6774  0.16%     -    0s
*    3     2               3    31031.000000 31018.0000  0.04%   3.0    0s

Cutting planes:
  Implied bound: 4

Explored 6 nodes (362 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.103100000000e+04, best bound 3.103100000000e+04, gap 0.0%