Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:24 2013

Optimize a model with 627 rows, 32547 columns and 65037 nonzeros
Presolve time: 0.04s
Presolved: 627 rows, 32547 columns, 65037 nonzeros
Variable types: 32490 continuous, 57 integer (57 binary)

Root relaxation: objective 5.922177e+04, 1404 iterations, 0.04 seconds

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

     0     0 59221.7693    0    8          - 59221.7693     -      -    0s
H    0     0                    62143.000000 59221.7693  4.70%     -    0s
     0     0 59371.1786    0    5 62143.0000 59371.1786  4.46%     -    0s
H    0     0                    61220.000000 59371.1786  3.02%     -    0s
     0     0 59386.1908    0    4 61220.0000 59386.1908  3.00%     -    0s
H    0     0                    60758.000000 59386.1908  2.26%     -    0s
     0     0 59396.1201    0    4 60758.0000 59396.1201  2.24%     -    0s
H    0     0                    60694.000000 59396.1201  2.14%     -    0s
     0     0 59400.9081    0    4 60694.0000 59400.9081  2.13%     -    0s
     0     0 59401.7633    0    4 60694.0000 59401.7633  2.13%     -    0s
H    0     0                    60659.000000 59401.7633  2.07%     -    0s
     0     0 59401.9946    0    5 60659.0000 59401.9946  2.07%     -    0s
     0     0 59402.2538    0    5 60659.0000 59402.2538  2.07%     -    0s
     0     0 59402.4267    0    4 60659.0000 59402.4267  2.07%     -    0s
H    0     0                    59638.000000 59402.4267  0.40%     -    0s
     0     0 59402.4267    0    8 59638.0000 59402.4267  0.40%     -    0s
     0     0 59402.4267    0    5 59638.0000 59402.4267  0.40%     -    1s
     0     0 59402.4267    0    4 59638.0000 59402.4267  0.40%     -    1s
     0     0 59402.4267    0    4 59638.0000 59402.4267  0.40%     -    1s
     0     0 59402.4267    0    4 59638.0000 59402.4267  0.40%     -    1s
     0     0 59402.4267    0    4 59638.0000 59402.4267  0.40%     -    1s
     0     0 59402.4267    0    5 59638.0000 59402.4267  0.40%     -    1s
     0     0 59402.4668    0    4 59638.0000 59402.4668  0.39%     -    1s
     0     0 59402.4668    0    4 59638.0000 59402.4668  0.39%     -    1s
     0     0 59402.5415    0    5 59638.0000 59402.5415  0.39%     -    1s
     0     2 59406.1554    0    5 59638.0000 59406.1554  0.39%     -    1s
H    8     4                    59622.000000 59473.3699  0.25%  81.8    1s
*    9     4               7    59582.000000 59473.3699  0.18%  75.8    1s

Cutting planes:
  Implied bound: 83
  Flow cover: 10

Explored 16 nodes (4038 simplex iterations) in 1.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.958200000000e+04, best bound 5.958200000000e+04, gap 0.0%