Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:47 2013

Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.18s
Presolved: 1250 rows, 27900 columns, 68550 nonzeros
Variable types: 27600 continuous, 300 integer (300 binary)

Root relaxation: objective 1.749223e+05, 1786 iterations, 0.09 seconds

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

     0     0 174922.321    0    6          - 174922.321     -      -    0s
     0     0 174937.141    0    6          - 174937.141     -      -    0s
     0     0 174939.596    0    6          - 174939.596     -      -    0s
     0     0 174941.074    0    6          - 174941.074     -      -    0s
     0     0 174942.255    0    7          - 174942.255     -      -    0s
     0     0 174942.255    0    7          - 174942.255     -      -    0s
     0     0 174942.748    0    7          - 174942.748     -      -    0s
     0     0 174942.748    0    7          - 174942.748     -      -    0s
     0     0 174942.748    0    7          - 174942.748     -      -    1s
H    0     0                    182707.97026 174942.748  4.25%     -    1s
     0     2 174942.748    0    7 182707.970 174942.748  4.25%     -    1s
H   27    10                    176277.94093 175214.646  0.60%  25.1    2s
*   53     9              18    176210.35534 175968.691  0.14%  30.8    3s

Cutting planes:
  Flow cover: 9

Explored 65 nodes (4259 simplex iterations) in 3.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.762103553441e+05, best bound 1.762103553441e+05, gap 0.0%