Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:01:22 2013

Optimize a model with 45627 rows, 44957 columns and 179627 nonzeros
Presolve removed 1407 rows and 0 columns
Presolve time: 0.27s
Presolved: 44220 rows, 44957 columns, 176813 nonzeros
Variable types: 44890 continuous, 67 integer (67 binary)

Root relaxation: objective 8.580375e+04, 10803 iterations, 1.76 seconds

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

     0     0 85803.7547    0    3          - 85803.7547     -      -    2s
H    0     0                    86782.000000 85803.7547  1.13%     -    2s
H    0     0                    85983.000000 85803.7547  0.21%     -    2s
     0     0 85805.8912    0    3 85983.0000 85805.8912  0.21%     -    2s
     0     0 85805.8912    0    3 85983.0000 85805.8912  0.21%     -    3s
     0     0 85805.9348    0    3 85983.0000 85805.9348  0.21%     -    4s
     0     0 85805.9348    0    3 85983.0000 85805.9348  0.21%     -    4s
H    0     0                    85892.330827 85805.9348  0.10%     -    4s
H    0     0                    85858.000000 85805.9348  0.06%     -    4s
     0     1 85846.5957    0    2 85858.0000 85846.5957  0.01%     -    4s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 2 nodes (15151 simplex iterations) in 4.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.585800000000e+04, best bound 8.585000000000e+04, gap 0.0093%