Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:46:57 2013

Optimize a model with 680 rows, 24260 columns and 248680 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.35s
Presolved: 660 rows, 24240 columns, 228660 nonzeros
Variable types: 24040 continuous, 200 integer (200 binary)

Root relaxation: objective 4.636776e+04, 563 iterations, 0.03 seconds

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

     0     0 46367.7551    0    6          - 46367.7551     -      -    0s
     0     0 46368.0262    0    6          - 46368.0262     -      -    0s
     0     0 46368.0262    0    6          - 46368.0262     -      -    0s
     0     2 46369.2479    0    6          - 46369.2479     -      -    3s
*   34    17              32    46696.025917 46385.5815  0.66%   9.2    4s
H   36    14                    46695.857783 46385.5815  0.66%   8.7    4s
*   38    16              32    46695.338281 46385.5815  0.66%   8.4    4s
H   63    27                    46674.913477 46387.9094  0.61%   8.4    5s
*   65    29              24    46674.388295 46387.9094  0.61%   8.2    5s
*   98    22              15    46656.039062 46627.5092  0.06%   7.2    5s
*  127    19              11    46654.472579 46648.0238  0.01%   6.4    5s

Cutting planes:
  Flow cover: 2

Explored 144 nodes (1621 simplex iterations) in 5.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665447257936e+04, best bound 4.665055630133e+04, gap 0.0084%