Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:22 2013

Optimize a model with 52 rows, 158 columns and 924 nonzeros
Presolve removed 22 rows and 30 columns
Presolve time: 0.00s
Presolved: 30 rows, 128 columns, 766 nonzeros
Variable types: 116 continuous, 12 integer (12 binary)

Root relaxation: objective 7.659086e+03, 12 iterations, 0.00 seconds

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

     0     0 7659.08578    0    3          - 7659.08578     -      -    0s
     0     0 7660.46736    0    4          - 7660.46736     -      -    0s
     0     0 7660.53317    0    4          - 7660.53317     -      -    0s
     0     0 7664.09593    0    2          - 7664.09593     -      -    0s
*    0     0               0    7664.6344075 7664.63441   0.0%     -    0s

Cutting planes:
  Cover: 1
  Implied bound: 1
  Flow cover: 1

Explored 0 nodes (43 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.664634407493e+03, best bound 7.664634407493e+03, gap 0.0%