Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:12 2013

Optimize a model with 280 rows, 2100 columns and 11250 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.01s
Presolved: 270 rows, 2090 columns, 10240 nonzeros
Variable types: 2020 continuous, 70 integer (70 binary)

Root relaxation: objective 2.337984e+04, 139 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    3          - 23379.8401     -      -    0s
     0     0 23380.9849    0    4          - 23380.9849     -      -    0s
     0     0 23512.7227    0    6          - 23512.7227     -      -    0s
     0     0 23512.7227    0    6          - 23512.7227     -      -    0s
H    0     0                    23903.752599 23512.7227  1.64%     -    0s
     0     2 23512.7227    0    6 23903.7526 23512.7227  1.64%     -    0s
*    8     5               8    23527.305205 23512.7227  0.06%  11.9    0s

Cutting planes:
  Flow cover: 1

Explored 12 nodes (452 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.352730520463e+04, best bound 2.352635335229e+04, gap 0.0040%