Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:14 2013

Optimize a model with 18102 rows, 17682 columns and 70602 nonzeros
Presolve removed 640 rows and 0 columns
Presolve time: 0.10s
Presolved: 17462 rows, 17682 columns, 69322 nonzeros
Variable types: 17640 continuous, 42 integer (42 binary)

Root relaxation: objective 4.113089e+04, 2191 iterations, 0.15 seconds

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

     0     0 41130.8895    0    2          - 41130.8895     -      -    0s
H    0     0                    41324.000000 41130.8895  0.47%     -    0s
H    0     0                    41276.000000 41130.8895  0.35%     -    0s
     0     0 41131.5573    0    3 41276.0000 41131.5573  0.35%     -    0s
*    0     0               0    41275.000000 41275.0000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 0 nodes (2249 simplex iterations) in 0.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.127500000000e+04, best bound 4.127500000000e+04, gap 0.0%