Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:22 2013

Optimize a model with 320 rows, 4160 columns and 8340 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.01s
Presolved: 280 rows, 4100 columns, 8200 nonzeros
Variable types: 4080 continuous, 20 integer (20 binary)

Root relaxation: objective 4.636776e+04, 527 iterations, 0.01 seconds

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

     0     0 46367.7551    0    2          - 46367.7551     -      -    0s
     0     0 46415.1176    0    2          - 46415.1176     -      -    0s
     0     0 46436.8112    0    2          - 46436.8112     -      -    0s
     0     0 46447.3806    0    2          - 46447.3806     -      -    0s
     0     0 46447.5010    0    2          - 46447.5010     -      -    0s
     0     0 46448.5415    0    2          - 46448.5415     -      -    0s
     0     0 46450.1122    0    2          - 46450.1122     -      -    0s
     0     0 46450.2368    0    2          - 46450.2368     -      -    0s
     0     0 46450.2717    0    2          - 46450.2717     -      -    0s
     0     0 46450.2717    0    2          - 46450.2717     -      -    0s
H    0     0                    46625.049630 46450.2717  0.37%     -    0s
     0     0 46625.0496    0    1 46625.0496 46625.0496   0.0%     -    0s

Cutting planes:
  Flow cover: 10

Explored 1 nodes (632 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.662504962981e+04, best bound 4.662504962981e+04, gap 0.0%