Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:09 2013

Optimize a model with 19844 rows, 19404 columns and 77484 nonzeros
Presolve removed 1847 rows and 0 columns
Presolve time: 0.11s
Presolved: 17997 rows, 19404 columns, 73790 nonzeros
Variable types: 19360 continuous, 44 integer (44 binary)

Root relaxation: objective 4.627499e+04, 2860 iterations, 0.21 seconds

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

     0     0 46274.9896    0    3          - 46274.9896     -      -    0s
H    0     0                    46744.000000 46274.9896  1.00%     -    0s
H    0     0                    46338.000000 46274.9896  0.14%     -    0s
     0     0 46279.1621    0    4 46338.0000 46279.1621  0.13%     -    0s
     0     0 46279.1621    0    4 46338.0000 46279.1621  0.13%     -    0s
     0     0 46310.5278    0    1 46338.0000 46310.5278  0.06%     -    0s
     0     0 46310.5278    0    1 46338.0000 46310.5278  0.06%     -    0s
     0     0     cutoff    0      46338.0000 46338.0000   0.0%     -    0s

Cutting planes:
  Flow cover: 2

Explored 0 nodes (3817 simplex iterations) in 0.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.633800000000e+04, best bound 4.633800000000e+04, gap 0.0%