Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:50:57 2013

Optimize a model with 928 rows, 837 columns and 3294 nonzeros
Presolve removed 9 rows and 0 columns
Presolve time: 0.00s
Presolved: 919 rows, 837 columns, 3285 nonzeros
Variable types: 828 continuous, 9 integer (9 binary)

Root relaxation: objective 1.938857e+04, 227 iterations, 0.00 seconds

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

     0     0 19388.5703    0    7          - 19388.5703     -      -    0s
H    0     0                    19810.000000 19388.5703  2.13%     -    0s
     0     0     cutoff    0      19810.0000 19810.0000   0.0%     -    0s

Cutting planes:
  Gomory: 6
  Implied bound: 7

Explored 0 nodes (297 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.981000000000e+04, best bound 1.981000000000e+04, gap 0.0%