Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:37:55 2013

Optimize a model with 54093 rows, 53363 columns and 213233 nonzeros
Presolve removed 1993 rows and 0 columns
Presolve time: 0.33s
Presolved: 52100 rows, 53363 columns, 209247 nonzeros
Variable types: 53290 continuous, 73 integer (73 binary)

Root relaxation: objective 9.256470e+04, 12317 iterations, 2.23 seconds

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

     0     0 92564.6979    0    7          - 92564.6979     -      -    2s
H    0     0                    93628.000000 92564.6979  1.14%     -    2s
H    0     0                    92747.000000 92564.6979  0.20%     -    3s
     0     0 92566.2125    0    8 92747.0000 92566.2125  0.19%     -    3s
     0     0 92566.2125    0    7 92747.0000 92566.2125  0.19%     -    5s
     0     0 92566.8310    0    7 92747.0000 92566.8310  0.19%     -    5s
     0     0 92568.8987    0    7 92747.0000 92568.8987  0.19%     -    6s
     0     0 92568.8987    0    7 92747.0000 92568.8987  0.19%     -    6s
H    0     0                    92740.000000 92568.8987  0.18%     -    7s
     0     2 92570.2491    0    7 92740.0000 92570.2491  0.18%     -    7s
*    7     5               6    92728.000000 92662.5751  0.07%  97.3    7s

Cutting planes:
  Flow cover: 7

Explored 13 nodes (19252 simplex iterations) in 7.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.272800000000e+04, best bound 9.272800000000e+04, gap 0.0%