Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:22:36 2013

Optimize a model with 9177 rows, 1444 columns and 28158 nonzeros
Presolve removed 1220 rows and 740 columns
Presolve time: 0.06s
Presolved: 7957 rows, 704 columns, 24395 nonzeros
Variable types: 15 continuous, 689 integer (689 binary)
Found heuristic solution: objective 33395.000000

Root relaxation: objective 2.731446e+04, 2011 iterations, 0.06 seconds

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

     0     0 27314.4615    0    8 33395.0000 27314.4615  18.2%     -    0s
H    0     0                    27330.000000 27314.4615  0.06%     -    0s
H    0     0                    27326.000000 27314.4615  0.04%     -    0s
     0     0 27316.8089    0   21 27326.0000 27316.8089  0.03%     -    0s
     0     0 27316.8089    0    4 27326.0000 27316.8089  0.03%     -    0s
     0     0 27316.8089    0   20 27326.0000 27316.8089  0.03%     -    0s
     0     2 27317.2348    0   20 27326.0000 27317.2348  0.03%     -    0s
H   10     8                    27324.000000 27320.0512  0.01%   0.0    0s
H   10     7                    27323.000000 27320.0512  0.01%   0.0    0s

Cutting planes:
  Gomory: 4
  Cover: 2
  MIR: 6
  Zero half: 1

Explored 13 nodes (2300 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.732300000000e+04, best bound 2.732200000000e+04, gap 0.0037%