Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:19 2013

Optimize a model with 18102 rows, 17682 columns and 70602 nonzeros
Presolve removed 543 rows and 0 columns
Presolve time: 0.10s
Presolved: 17559 rows, 17682 columns, 69516 nonzeros
Variable types: 17640 continuous, 42 integer (42 binary)

Root relaxation: objective 4.565815e+04, 2910 iterations, 0.24 seconds

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

     0     0 45658.1462    0    2          - 45658.1462     -      -    0s
H    0     0                    45879.000000 45658.1462  0.48%     -    0s
H    0     0                    45728.000000 45658.1462  0.15%     -    0s
     0     0 45660.5228    0    4 45728.0000 45660.5228  0.15%     -    0s
     0     0 45661.1661    0    4 45728.0000 45661.1661  0.15%     -    0s
     0     0 45661.2425    0    3 45728.0000 45661.2425  0.15%     -    0s
     0     0 45661.2425    0    2 45728.0000 45661.2425  0.15%     -    1s
     0     0 45661.2425    0    3 45728.0000 45661.2425  0.15%     -    1s
     0     0 45661.2425    0    3 45728.0000 45661.2425  0.15%     -    1s
     0     2 45667.5207    0    3 45728.0000 45667.5207  0.13%     -    1s
*    2     2               2    45704.000000 45693.7143  0.02%  30.5    1s
*    4     1               3    45694.000000 45694.0000   0.0%  16.8    1s

Cutting planes:
  Gomory: 2
  Flow cover: 3

Explored 5 nodes (4019 simplex iterations) in 1.46 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.569400000000e+04, best bound 4.569400000000e+04, gap 0.0%