Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:59 2013

Optimize a model with 280 rows, 4460 columns and 9280 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 260 rows, 4440 columns, 8860 nonzeros
Variable types: 4440 continuous, 0 integer (0 binary)

Root relaxation: objective 3.894400e+04, 486 iterations, 0.01 seconds

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

     0     0 38944.0027    0    2          - 38944.0027     -      -    0s
     0     2 38944.0027    0    2          - 38944.0027     -      -    0s
*   33    11              17    39379.228693 39207.7362  0.44%  22.6    0s
*   39    11              20    39373.864104 39207.7362  0.42%  19.5    0s
*   52     6               7    39246.875698 39246.8757   0.0%  15.8    0s

Explored 53 nodes (1310 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.924687569829e+04, best bound 3.924687569829e+04, gap 0.0%