Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:21:50 2012

Optimize a model with 61409 rows, 53130 columns and 236208 nonzeros
Presolve removed 1054 rows and 2 columns
Presolve time: 1.63s
Presolved: 60585 rows, 53128 columns, 285956 nonzeros
Variable types: 0 continuous, 53128 integer (53128 binary)
Found heuristic solution: objective 230.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   35238    3.0000989e+00   1.810000e+02   0.000000e+00      5s
   40201    3.0001354e+00   6.991667e+01   0.000000e+00     10s
   44609    3.0001482e+00   3.738462e+01   0.000000e+00     15s
   47875    3.0001550e+00   4.379580e+01   0.000000e+00     20s
   50715    3.0001601e+00   1.013662e+01   0.000000e+00     25s
   53697    3.0001663e+00   5.890222e+00   0.000000e+00     30s
   56679    3.0001733e+00   2.267508e+01   0.000000e+00     35s
   59661    3.0001795e+00   1.381213e+01   0.000000e+00     40s
   62501    3.0001843e+00   3.267528e+01   0.000000e+00     45s
   65341    3.0001868e+00   4.291381e+00   0.000000e+00     50s
   66805    3.0000000e+00   0.000000e+00   0.000000e+00     53s

Root relaxation: objective 3.000000e+00, 66805 iterations, 52.68 seconds

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

*    0     0               0       3.0000000    3.00000   0.0%     -   87s

Explored 0 nodes (101070 simplex iterations) in 87.82 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%