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

Optimize a model with 572 rows, 27092 columns and 54132 nonzeros
Presolve time: 0.04s
Presolved: 572 rows, 27092 columns, 54132 nonzeros
Variable types: 27040 continuous, 52 integer (52 binary)

Root relaxation: objective 4.706723e+04, 855 iterations, 0.02 seconds

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

     0     0 47067.2336    0    4          - 47067.2336     -      -    0s
H    0     0                    47936.000000 47067.2336  1.81%     -    0s
H    0     0                    47741.000000 47067.2336  1.41%     -    0s
     0     0 47617.1794    0    5 47741.0000 47617.1794  0.26%     -    0s
     0     0 47645.2993    0    4 47741.0000 47645.2993  0.20%     -    0s
     0     0 47645.2993    0    4 47741.0000 47645.2993  0.20%     -    0s
     0     0 47645.2993    0    5 47741.0000 47645.2993  0.20%     -    0s
     0     0 47645.2993    0    4 47741.0000 47645.2993  0.20%     -    0s
     0     0 47656.4952    0    5 47741.0000 47656.4952  0.18%     -    0s
     0     0 47660.2947    0    4 47741.0000 47660.2947  0.17%     -    0s
     0     0 47663.9010    0    4 47741.0000 47663.9010  0.16%     -    0s
     0     0 47665.7186    0    4 47741.0000 47665.7186  0.16%     -    0s
     0     0 47668.7460    0    4 47741.0000 47668.7460  0.15%     -    0s
     0     0 47671.5701    0    3 47741.0000 47671.5701  0.15%     -    0s
     0     2 47676.5404    0    3 47741.0000 47676.5404  0.14%     -    0s
*    2     1               2    47737.000000 47715.5158  0.05%  27.0    0s

Cutting planes:
  Implied bound: 83
  Flow cover: 3

Explored 4 nodes (2115 simplex iterations) in 0.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.773700000000e+04, best bound 4.773700000000e+04, gap 0.0%