Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:23 2013

Optimize a model with 473 rows, 18533 columns and 37023 nonzeros
Presolve time: 0.03s
Presolved: 473 rows, 18533 columns, 37023 nonzeros
Variable types: 18490 continuous, 43 integer (43 binary)

Root relaxation: objective 4.268682e+04, 742 iterations, 0.02 seconds

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

     0     0 42686.8156    0    3          - 42686.8156     -      -    0s
H    0     0                    43515.000000 42686.8156  1.90%     -    0s
H    0     0                    43199.000000 42686.8156  1.19%     -    0s
H    0     0                    42817.000000 42686.8156  0.30%     -    0s
     0     0     cutoff    0      42817.0000 42817.0000   0.0%     -    0s

Cutting planes:
  Implied bound: 25

Explored 0 nodes (825 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.281700000000e+04, best bound 4.281700000000e+04, gap 0.0%