Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:36 2013

Optimize a model with 216 rows, 413 columns and 1425 nonzeros
Presolve removed 36 rows and 60 columns
Presolve time: 0.01s
Presolved: 180 rows, 353 columns, 1058 nonzeros
Variable types: 177 continuous, 176 integer (176 binary)
Found heuristic solution: objective 3887.5961657

Root relaxation: objective 3.884531e+03, 6 iterations, 0.00 seconds

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

     0     0 3884.53068    0    2 3887.59617 3884.53068  0.08%     -    0s
     0     0 3885.49407    0    2 3887.59617 3885.49407  0.05%     -    0s
     0     0 3886.43218    0    2 3887.59617 3886.43218  0.03%     -    0s
     0     0 3887.34613    0    2 3887.59617 3887.34613  0.01%     -    0s

Explored 0 nodes (21 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.887596165724e+03, best bound 3.887346129090e+03, gap 0.0064%