Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:21 2013

Optimize a model with 15678 rows, 15288 columns and 60918 nonzeros
Presolve removed 39 rows and 0 columns
Presolve time: 0.07s
Presolved: 15639 rows, 15288 columns, 60879 nonzeros
Variable types: 15249 continuous, 39 integer (39 binary)

Root relaxation: objective 3.866720e+04, 2639 iterations, 0.61 seconds

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

     0     0 38667.1953    0   36          - 38667.1953     -      -    0s
H    0     0                    46955.000000 38667.1953  17.7%     -    0s
     0     0 45106.1084    0    2 46955.0000 45106.1084  3.94%     -    1s
H    0     0                    45841.408434 45106.1084  1.60%     -    1s
H    0     0                    45266.000000 45106.1084  0.35%     -    1s
     0     0 45106.1084    0    1 45266.0000 45106.1084  0.35%     -    1s
H    0     0                    45265.000000 45106.1084  0.35%     -    1s
     0     2 45108.3976    0    1 45265.0000 45108.3976  0.35%     -    1s
H    2     1                    45261.529851 45223.1866  0.08%   1.5    1s
H    3     1                    45251.151515 45225.7273  0.06%  14.7    1s
*    4     1               3    45233.000000 45233.0000   0.0%  23.5    1s

Cutting planes:
  Gomory: 1
  Implied bound: 34

Explored 5 nodes (3775 simplex iterations) in 1.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.523300000000e+04, best bound 4.523300000000e+04, gap 0.0%