Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:07:04 2013

Optimize a model with 76647 rows, 75777 columns and 302847 nonzeros
Presolve removed 3861 rows and 0 columns
Presolve time: 0.51s
Presolved: 72786 rows, 75777 columns, 295125 nonzeros
Variable types: 75690 continuous, 87 integer (87 binary)

Root relaxation: objective 9.092183e+04, 16662 iterations, 4.51 seconds

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

     0     0 90921.8294    0    6          - 90921.8294     -      -    5s
H    0     0                    96027.000000 90921.8294  5.32%     -    5s
H    0     0                    96013.000000 90921.8294  5.30%     -    5s
H    0     0                    92330.000000 90921.8294  1.53%     -    6s
     0     0 90928.6112    0    8 92330.0000 90928.6112  1.52%     -    6s
     0     0 90929.6209    0    8 92330.0000 90929.6209  1.52%     -    7s
     0     0 90929.6209    0    8 92330.0000 90929.6209  1.52%     -    7s
H    0     0                    92255.535354 90929.6209  1.44%     -   10s
H    0     0                    92245.000000 90929.6209  1.43%     -   10s
     0     2 90941.7263    0    8 92245.0000 90941.7263  1.41%     -   11s
    13    14 92089.4469    8    2 92245.0000 91577.7387  0.72%   448   15s
*   26    17               9    92072.000000 91626.3256  0.48%   333   16s
H   29    11                    91963.000000 91626.3256  0.37%   306   17s
H   56     3                    91904.000000 91867.3096  0.04%   246   19s

Cutting planes:
  Gomory: 2
  Flow cover: 6

Explored 61 nodes (30642 simplex iterations) in 19.96 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.190400000000e+04, best bound 9.190400000000e+04, gap 0.0%