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 4.642213e+04, 457 iterations, 0.01 seconds

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

     0     0 46422.1265    0    3          - 46422.1265     -      -    0s
H    0     0                    47019.374336 46422.1265  1.27%     -    0s
     0     2 46422.1265    0    3 47019.3743 46422.1265  1.27%     -    0s
*   13     5               7    46742.720716 46740.8306  0.00%  16.8    0s

Explored 14 nodes (675 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674272071620e+04, best bound 4.674083057938e+04, gap 0.0040%