Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:09 2013

Optimize a model with 13287 rows, 1849 columns and 40678 nonzeros
Presolve removed 1726 rows and 949 columns
Presolve time: 0.09s
Presolved: 11561 rows, 900 columns, 35362 nonzeros
Variable types: 17 continuous, 883 integer (883 binary)
Found heuristic solution: objective 49838.000000

Root relaxation: objective 3.958946e+04, 3547 iterations, 0.14 seconds

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

     0     0 39589.4643    0   10 49838.0000 39589.4643  20.6%     -    0s
H    0     0                    39609.000000 39589.4643  0.05%     -    0s
H    0     0                    39597.000000 39589.4643  0.02%     -    0s
     0     0 39590.6342    0   17 39597.0000 39590.6342  0.02%     -    0s
     0     0 39590.6342    0    6 39597.0000 39590.6342  0.02%     -    0s
H    0     0                    39595.000000 39590.6342  0.01%     -    0s
     0     0 39591.7916    0   17 39595.0000 39591.7916  0.01%     -    0s

Cutting planes:
  Gomory: 4
  Cover: 1
  Implied bound: 1
  MIR: 7
  Zero half: 1
  Mod-K: 1

Explored 0 nodes (3757 simplex iterations) in 0.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.959500000000e+04, best bound 3.959200000000e+04, gap 0.0076%