Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:16:18 2013

Optimize a model with 280 rows, 4260 columns and 8680 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 260 rows, 4240 columns, 8460 nonzeros
Variable types: 4240 continuous, 0 integer (0 binary)

Root relaxation: objective 4.370285e+04, 451 iterations, 0.01 seconds

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

     0     0 43702.8549    0    2          - 43702.8549     -      -    0s
H    0     0                    44529.286095 43702.8549  1.86%     -    0s
     0     2 43702.8549    0    2 44529.2861 43702.8549  1.86%     -    0s
*   15    13               8    44041.268606 43852.1529  0.43%  18.9    0s
*   34     6               8    44038.692081 43878.1255  0.36%  11.9    0s
*   44     6               7    43900.453435 43900.4534   0.0%  10.5    0s

Explored 45 nodes (914 simplex iterations) in 0.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.390045343473e+04, best bound 4.390045343473e+04, gap 0.0%