Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:44:01 2013

Optimize a model with 280 rows, 4160 columns and 8380 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.00s
Presolved: 260 rows, 4140 columns, 8260 nonzeros
Variable types: 4140 continuous, 0 integer (0 binary)

Root relaxation: objective 3.860476e+04, 493 iterations, 0.01 seconds

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

     0     0 38604.7615    0    3          - 38604.7615     -      -    0s
H    0     0                    39633.227763 38604.7615  2.59%     -    0s
     0     2 38604.7615    0    3 39633.2278 38604.7615  2.59%     -    0s
*   14     6               7    38858.752096 38851.1992  0.02%  19.1    0s

Explored 18 nodes (762 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.885875209612e+04, best bound 3.885565987722e+04, gap 0.0080%