Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:49:18 2012

Optimize a model with 67511 rows, 54056 columns and 255430 nonzeros
Presolve removed 481 rows and 3482 columns
Presolve time: 4.88s
Presolved: 67030 rows, 50574 columns, 250212 nonzeros
Variable types: 0 continuous, 50574 integer (50574 binary)
Found heuristic solution: objective 232.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   35224    3.0000786e+00   5.230357e+01   0.000000e+00      5s
   41883    3.0000860e+00   1.067196e+02   0.000000e+00     10s
   45012    3.0000891e+00   1.321696e+01   0.000000e+00     15s
   48290    3.0000921e+00   1.235500e+02   0.000000e+00     20s
   51717    3.0000962e+00   1.347678e+01   0.000000e+00     25s
   55144    3.0000997e+00   2.565714e+02   0.000000e+00     30s
   58422    3.0001038e+00   2.165641e+00   0.000000e+00     35s
   58642    3.0000000e+00   0.000000e+00   0.000000e+00     35s

Root relaxation: objective 3.000000e+00, 58642 iterations, 35.45 seconds
Total elapsed time = 67.12s

    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%     -   70s

Explored 0 nodes (144401 simplex iterations) in 70.91 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%