Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:35 2013

Optimize a model with 30 rows, 532 columns and 4437 nonzeros
Presolve removed 12 rows and 124 columns
Presolve time: 0.01s
Presolved: 18 rows, 408 columns, 4014 nonzeros
Variable types: 400 continuous, 8 integer (8 binary)
Found heuristic solution: objective 3887.5961657

Root relaxation: objective 3.887591e+03, 10 iterations, 0.00 seconds

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

     0     0 3887.59079    0    2 3887.59617 3887.59079  0.00%     -    0s

Explored 0 nodes (12 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.887596165724e+03, best bound 3.887590790224e+03, gap 0.0001%