Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:21 2013

Optimize a model with 473 rows, 18533 columns and 37023 nonzeros
Presolve time: 0.03s
Presolved: 473 rows, 18533 columns, 37023 nonzeros
Variable types: 18490 continuous, 43 integer (43 binary)

Root relaxation: objective 4.342456e+04, 784 iterations, 0.01 seconds

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

     0     0 43424.5572    0    9          - 43424.5572     -      -    0s
H    0     0                    44330.000000 43424.5572  2.04%     -    0s
     0     0 43687.9422    0    4 44330.0000 43687.9422  1.45%     -    0s
     0     0 43701.7090    0    5 44330.0000 43701.7090  1.42%     -    0s
     0     0 43705.1256    0    5 44330.0000 43705.1256  1.41%     -    0s
     0     0 43709.6475    0    5 44330.0000 43709.6475  1.40%     -    0s
     0     0 43710.8493    0    5 44330.0000 43710.8493  1.40%     -    0s
     0     0 43711.5996    0    5 44330.0000 43711.5996  1.39%     -    0s
     0     0 43711.5996    0    5 44330.0000 43711.5996  1.39%     -    0s
H    0     0                    43919.000000 43711.5996  0.47%     -    0s
     0     2 43741.8393    0    5 43919.0000 43741.8393  0.40%     -    0s
*    9     3               8    43900.000000 43832.9383  0.15%  21.1    0s

Cutting planes:
  Implied bound: 79
  Flow cover: 5

Explored 14 nodes (1346 simplex iterations) in 0.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.390000000000e+04, best bound 4.390000000000e+04, gap 0.0%