Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:39 2013

Optimize a model with 828 rows, 844 columns and 3282 nonzeros
Presolve removed 777 rows and 776 columns
Presolve time: 0.01s
Presolved: 51 rows, 68 columns, 188 nonzeros
Variable types: 45 continuous, 23 integer (23 binary)

Root relaxation: objective 7.444602e+03, 26 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                    7459.1534069 7444.60178  0.20%     -    0s
     0     0     cutoff    0      7459.15341 7459.15341   0.0%     -    0s

Cutting planes:
  Implied bound: 1
  Flow cover: 2

Explored 0 nodes (32 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.459153406943e+03, best bound 7.459153406943e+03, gap 0.0%