Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:26 2013

Optimize a model with 40 rows, 82 columns and 214 nonzeros
Presolve removed 22 rows and 40 columns
Presolve time: 0.00s
Presolved: 18 rows, 42 columns, 131 nonzeros
Variable types: 36 continuous, 6 integer (6 binary)

Root relaxation: objective 3.881864e+03, 9 iterations, 0.00 seconds

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

     0     0 3881.86365    0    1          - 3881.86365     -      -    0s
H    0     0                    3893.3058949 3881.86365  0.29%     -    0s
     0     0 3891.20450    0    2 3893.30589 3891.20450  0.05%     -    0s

Explored 0 nodes (17 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.893305894864e+03, best bound 3.893305894864e+03, gap 0.0%