Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:16 2013

Optimize a model with 428 rows, 444 columns and 1682 nonzeros
Presolve removed 400 rows and 399 columns
Presolve time: 0.01s
Presolved: 28 rows, 45 columns, 126 nonzeros
Variable types: 33 continuous, 12 integer (12 binary)

Root relaxation: objective 7.444602e+03, 15 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                    7459.1516945 7444.60178  0.20%     -    0s
     0     0     cutoff    0      7459.15169 7459.15169   0.0%     -    0s

Cutting planes:
  Implied bound: 1
  Flow cover: 2

Explored 0 nodes (17 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.459151694455e+03, best bound 7.459151694455e+03, gap 0.0%