Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:14 2013

Optimize a model with 13287 rows, 1849 columns and 40678 nonzeros
Presolve removed 1491 rows and 941 columns
Presolve time: 0.08s
Presolved: 11796 rows, 908 columns, 36148 nonzeros
Variable types: 19 continuous, 889 integer (889 binary)
Found heuristic solution: objective 45637.000000

Root relaxation: objective 3.722637e+04, 3766 iterations, 0.17 seconds

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

     0     0 37226.3704    0    9 45637.0000 37226.3704  18.4%     -    0s
H    0     0                    37246.000000 37226.3704  0.05%     -    0s
H    0     0                    37243.000000 37226.3704  0.04%     -    0s
     0     0 37227.2346    0   20 37243.0000 37227.2346  0.04%     -    0s
     0     0 37227.2346    0   11 37243.0000 37227.2346  0.04%     -    0s
     0     0 37227.7538    0   21 37243.0000 37227.7538  0.04%     -    0s
     0     2 37228.0387    0   18 37243.0000 37228.0387  0.04%     -    0s
H    3     4                    37242.000000 37228.0387  0.04%   0.7    0s

Cutting planes:
  Gomory: 8
  MIR: 14
  Zero half: 2

Explored 31 nodes (4720 simplex iterations) in 0.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.724200000000e+04, best bound 3.723900000000e+04, gap 0.0081%