Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:01:55 2013

Optimize a model with 836 rows, 57836 columns and 115596 nonzeros
Presolve time: 0.08s
Presolved: 836 rows, 57836 columns, 115596 nonzeros
Variable types: 57760 continuous, 76 integer (76 binary)

Root relaxation: objective 8.276673e+04, 2157 iterations, 0.07 seconds

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

     0     0 82766.7312    0    5          - 82766.7312     -      -    0s
H    0     0                    85775.000000 82766.7312  3.51%     -    0s
H    0     0                    83317.000000 82766.7312  0.66%     -    0s
     0     0 83099.8860    0    4 83317.0000 83099.8860  0.26%     -    0s
     0     0 83099.8860    0    5 83317.0000 83099.8860  0.26%     -    0s
     0     0 83099.8860    0    4 83317.0000 83099.8860  0.26%     -    0s
     0     0 83152.3156    0    3 83317.0000 83152.3156  0.20%     -    0s
     0     0 83158.6112    0    3 83317.0000 83158.6112  0.19%     -    0s
     0     0 83161.2161    0    3 83317.0000 83161.2161  0.19%     -    0s
     0     0 83162.7813    0    3 83317.0000 83162.7813  0.19%     -    0s
     0     0 83162.7813    0    3 83317.0000 83162.7813  0.19%     -    0s
     0     0 83162.7813    0    3 83317.0000 83162.7813  0.19%     -    1s
     0     0 83162.7813    0    3 83317.0000 83162.7813  0.19%     -    1s
     0     0 83198.5652    0    2 83317.0000 83198.5652  0.14%     -    1s
     0     2 83217.7040    0    2 83317.0000 83217.7040  0.12%     -    1s

Cutting planes:
  Implied bound: 57
  Flow cover: 1

Explored 5 nodes (4236 simplex iterations) in 1.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.331700000000e+04, best bound 8.331400000000e+04, gap 0.0036%