Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:56 2013

Optimize a model with 400 rows, 4220 columns and 8760 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 380 rows, 4200 columns, 8640 nonzeros
Variable types: 4140 continuous, 60 integer (60 binary)

Root relaxation: objective 4.642213e+04, 568 iterations, 0.01 seconds

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

     0     0 46422.1265    0    6          - 46422.1265     -      -    0s
     0     0 46449.0913    0    6          - 46449.0913     -      -    0s
     0     0 46451.7036    0    4          - 46451.7036     -      -    0s
     0     0 46452.4225    0    6          - 46452.4225     -      -    0s
     0     0 46455.1190    0    4          - 46455.1190     -      -    0s
     0     0 46457.9888    0    4          - 46457.9888     -      -    0s
     0     0 46457.9888    0    4          - 46457.9888     -      -    0s
     0     0 46457.9888    0    4          - 46457.9888     -      -    0s
     0     0 46457.9888    0    4          - 46457.9888     -      -    0s
H    0     0                    46797.542467 46457.9888  0.73%     -    0s
     0     1 46513.6157    0    4 46797.5425 46513.6157  0.61%     -    0s
*    9     2               5    46739.727868 46739.7279   0.0%  23.4    0s

Cutting planes:
  Flow cover: 7

Explored 10 nodes (1037 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.673972786769e+04, best bound 4.673972786769e+04, gap 0.0%