Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:23 2013

Optimize a model with 320 rows, 4160 columns and 8340 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.01s
Presolved: 280 rows, 4100 columns, 8200 nonzeros
Variable types: 4080 continuous, 20 integer (20 binary)

Root relaxation: objective 3.573401e+04, 439 iterations, 0.01 seconds

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

     0     0 35734.0139    0    3          - 35734.0139     -      -    0s
     0     0 35762.6977    0    3          - 35762.6977     -      -    0s
     0     0 35789.4267    0    3          - 35789.4267     -      -    0s
     0     0 35800.9190    0    4          - 35800.9190     -      -    0s
     0     0 35802.3381    0    4          - 35802.3381     -      -    0s
     0     0 35807.2524    0    4          - 35807.2524     -      -    0s
     0     0 35807.6117    0    4          - 35807.6117     -      -    0s
     0     0 35807.9513    0    4          - 35807.9513     -      -    0s
     0     0 35807.9513    0    4          - 35807.9513     -      -    0s
H    0     0                    36637.968655 35807.9513  2.27%     -    0s
     0     2 35808.4434    0    4 36637.9687 35808.4434  2.26%     -    0s
*    5     4               4    36156.920466 36055.9265  0.28%  40.0    0s
*    6     2               4    36131.385172 36080.1592  0.14%  39.3    0s

Cutting planes:
  Flow cover: 21

Explored 11 nodes (879 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.613138517161e+04, best bound 3.613138517161e+04, gap 0.0%