Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:22:33 2013

Optimize a model with 78408 rows, 77528 columns and 309848 nonzeros
Presolve removed 4333 rows and 0 columns
Presolve time: 0.51s
Presolved: 74075 rows, 77528 columns, 301182 nonzeros
Variable types: 77440 continuous, 88 integer (88 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14521    8.5570840e+04   4.424986e+02   0.000000e+00      5s
   15180    8.5702855e+04   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 8.570286e+04, 15180 iterations, 5.54 seconds

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

     0     0 85702.8554    0    2          - 85702.8554     -      -    6s
H    0     0                    87503.000000 85702.8554  2.06%     -    6s
H    0     0                    85732.000000 85702.8554  0.03%     -    6s
     0     0 85702.9074    0    3 85732.0000 85702.9074  0.03%     -    7s
     0     0 85702.9074    0    2 85732.0000 85702.9074  0.03%     -    9s
     0     0 85702.9096    0    3 85732.0000 85702.9096  0.03%     -    9s
     0     0     cutoff    0      85732.0000 85732.0000   0.0%     -    9s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 0 nodes (19108 simplex iterations) in 9.98 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.573200000000e+04, best bound 8.573200000000e+04, gap 0.0%