Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:21:20 2013

Optimize a model with 1561 rows, 441 columns and 4851 nonzeros
Presolve removed 236 rows and 218 columns
Presolve time: 0.01s
Presolved: 1325 rows, 223 columns, 4227 nonzeros
Variable types: 14 continuous, 209 integer (209 binary)
Found heuristic solution: objective 9216.0000000

Root relaxation: objective 7.235946e+03, 1046 iterations, 0.02 seconds

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

     0     0 7235.94595    0    7 9216.00000 7235.94595  21.5%     -    0s
H    0     0                    7266.0000000 7235.94595  0.41%     -    0s
H    0     0                    7250.0000000 7235.94595  0.19%     -    0s
     0     0 7236.72001    0   12 7250.00000 7236.72001  0.18%     -    0s
     0     0 7236.72001    0    7 7250.00000 7236.72001  0.18%     -    0s
     0     0 7237.16697    0   15 7250.00000 7237.16697  0.18%     -    0s
     0     2 7237.92346    0   15 7250.00000 7237.92346  0.17%     -    0s

Cutting planes:
  Gomory: 12
  Cover: 1
  MIR: 7
  Zero half: 3

Explored 18 nodes (1337 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.250000000000e+03, best bound 7.250000000000e+03, gap 0.0%