Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:59:38 2013

Optimize a model with 68142 rows, 67322 columns and 269042 nonzeros
Presolve removed 3502 rows and 0 columns
Presolve time: 0.45s
Presolved: 64640 rows, 67322 columns, 262038 nonzeros
Variable types: 67240 continuous, 82 integer (82 binary)

Root relaxation: objective 9.160795e+04, 13907 iterations, 3.10 seconds

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

     0     0 91607.9506    0    5          - 91607.9506     -      -    3s
H    0     0                    93950.000000 91607.9506  2.49%     -    4s
     0     0 91610.3740    0    6 93950.0000 91610.3740  2.49%     -    4s
     0     0 91610.3740    0    6 93950.0000 91610.3740  2.49%     -    5s
H    0     0                    93048.873016 91610.3740  1.55%     -    6s
H    0     0                    92724.000000 91610.3740  1.20%     -    7s
     0     2 91625.2854    0    6 92724.0000 91625.2854  1.18%     -    8s
*    7     4               6    91919.000000 91754.1959  0.18%   218    9s

Cutting planes:
  Gomory: 1
  Flow cover: 7

Explored 10 nodes (15699 simplex iterations) in 9.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.191900000000e+04, best bound 9.191900000000e+04, gap 0.0%