Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:41 2013

Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.10s
Presolved: 1250 rows, 27900 columns, 68550 nonzeros
Variable types: 27600 continuous, 300 integer (300 binary)

Root relaxation: objective 2.198499e+05, 2602 iterations, 0.07 seconds

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

     0     0 219849.939    0    6          - 219849.939     -      -    0s
     0     0 219866.324    0    6          - 219866.324     -      -    0s
     0     0 219866.904    0    7          - 219866.904     -      -    0s
     0     0 219866.904    0    7          - 219866.904     -      -    0s
     0     0 219869.553    0    7          - 219869.553     -      -    0s
     0     0 219870.542    0    7          - 219870.542     -      -    0s
     0     0 219870.542    0    7          - 219870.542     -      -    0s
     0     0 219870.542    0    7          - 219870.542     -      -    0s
     0     2 219878.006    0    7          - 219878.006     -      -    1s
*   54    27              53    222680.82747 220220.935  1.10%  23.9    3s
*   71    25              17    221990.67135 220306.336  0.76%  29.8    3s
*  110    19              18    221988.45873 221085.713  0.41%  44.4    4s

Cutting planes:
  Flow cover: 6

Explored 142 nodes (8974 simplex iterations) in 4.37 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.219884587317e+05, best bound 2.219703889480e+05, gap 0.0081%