Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:30 2013

Optimize a model with 27775 rows, 3025 columns and 84700 nonzeros
Presolve removed 2494 rows and 1532 columns
Presolve time: 0.20s
Presolved: 25281 rows, 1493 columns, 77242 nonzeros
Variable types: 27 continuous, 1466 integer (1466 binary)
Found heuristic solution: objective 53508.000000

Root relaxation: objective 3.731825e+04, 8219 iterations, 0.51 seconds

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

     0     0 37318.2500    0   13 53508.0000 37318.2500  30.3%     -    0s
H    0     0                    37338.000000 37318.2500  0.05%     -    0s
H    0     0                    37336.000000 37318.2500  0.05%     -    0s
H    0     0                    37327.000000 37318.2500  0.02%     -    0s
     0     0 37318.5993    0   35 37327.0000 37318.5993  0.02%     -    1s
     0     0 37318.5993    0   18 37327.0000 37318.5993  0.02%     -    1s
     0     0 37318.8834    0   37 37327.0000 37318.8834  0.02%     -    1s
H    0     0                    37325.000000 37318.8834  0.02%     -    1s
     0     2 37319.0000    0   34 37325.0000 37319.0000  0.02%     -    1s
H   10     7                    37323.000000 37319.0000  0.01%   4.3    1s

Cutting planes:
  Gomory: 14
  Cover: 1
  MIR: 124
  Zero half: 35

Explored 1193 nodes (48940 simplex iterations) in 3.96 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.732300000000e+04, best bound 3.732000000000e+04, gap 0.0080%