Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:22 2013

Optimize a model with 2028 rows, 2044 columns and 8082 nonzeros
Presolve removed 1910 rows and 1909 columns
Presolve time: 0.07s
Presolved: 118 rows, 135 columns, 382 nonzeros
Variable types: 79 continuous, 56 integer (56 binary)

Root relaxation: objective 7.444602e+03, 59 iterations, 0.00 seconds

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

     0     0 7444.60178    0    1          - 7444.60178     -      -    0s
H    0     0                    7459.1541736 7444.60178  0.20%     -    0s
     0     0 7459.15261    0    2 7459.15417 7459.15261  0.00%     -    0s

Cutting planes:
  Implied bound: 1
  Flow cover: 2

Explored 0 nodes (73 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.459154173588e+03, best bound 7.459152605696e+03, gap 0.0000%