Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:56:59 2012

Optimize a model with 60703 rows, 50400 columns and 231390 nonzeros
Presolve removed 462 rows and 2690 columns
Presolve time: 4.44s
Presolved: 60241 rows, 47710 columns, 227044 nonzeros
Variable types: 0 continuous, 47710 integer (47710 binary)
Found heuristic solution: objective 224.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   40265    3.0001038e+00   5.505000e+02   0.000000e+00      5s
   50077    3.0001605e+00   3.093750e+01   0.000000e+00     10s
   55473    3.0001661e+00   1.099745e+02   0.000000e+00     15s
   60443    3.0001689e+00   2.285109e+01   0.000000e+00     20s
   64987    3.0001714e+00   9.673150e+00   0.000000e+00     25s
   69105    3.0001732e+00   3.941176e+01   0.000000e+00     30s
   70879    3.0000000e+00   0.000000e+00   0.000000e+00     32s

Root relaxation: objective 3.000000e+00, 70879 iterations, 31.94 seconds
Total elapsed time = 71.12s

    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%     -   73s

Explored 0 nodes (127575 simplex iterations) in 73.32 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%