Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:47 2013

Optimize a model with 660 rows, 2030 columns and 5550 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.04s
Presolved: 650 rows, 2020 columns, 5040 nonzeros
Variable types: 1520 continuous, 500 integer (500 binary)

Root relaxation: objective 2.337984e+04, 151 iterations, 0.00 seconds

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

     0     0 23379.8401    0    2          - 23379.8401     -      -    0s
     0     0 23420.8423    0    2          - 23420.8423     -      -    0s
     0     0 23425.0562    0    2          - 23425.0562     -      -    0s
     0     0 23427.8479    0    2          - 23427.8479     -      -    0s
     0     0 23434.1581    0    2          - 23434.1581     -      -    0s
     0     0 23434.4462    0    4          - 23434.4462     -      -    0s
     0     0 23436.4317    0    5          - 23436.4317     -      -    0s
     0     0 23436.9110    0    4          - 23436.9110     -      -    0s
     0     0 23438.0330    0    4          - 23438.0330     -      -    0s
     0     0 23438.2356    0    4          - 23438.2356     -      -    0s
     0     0 23438.3277    0    4          - 23438.3277     -      -    0s
     0     0 23438.3277    0    4          - 23438.3277     -      -    0s
H    0     0                    23620.127542 23438.3277  0.77%     -    0s
     0     2 23438.4446    0    5 23620.1275 23438.4446  0.77%     -    0s
*   16     5              10    23527.300521 23527.3005   0.0%   9.6    0s

Cutting planes:
  Gomory: 2
  Implied bound: 12
  Flow cover: 1

Explored 17 nodes (441 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.352730052140e+04, best bound 2.352730052140e+04, gap 0.0%