Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:33:56 2012

Optimize a model with 61142 rows, 52670 columns and 234952 nonzeros
Presolve removed 937 rows and 4353 columns
Presolve time: 1.60s
Presolved: 60205 rows, 48317 columns, 227785 nonzeros
Variable types: 0 continuous, 48317 integer (48317 binary)
Found heuristic solution: objective 229.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34902    3.0000821e+00   4.980000e+01   0.000000e+00      5s
   39730    3.0000855e+00   5.516134e+02   0.000000e+00     10s
   43280    3.0000888e+00   4.115914e+01   0.000000e+00     15s
   47114    3.0000919e+00   2.826190e+01   0.000000e+00     20s
   50806    3.0000948e+00   1.212960e+01   0.000000e+00     25s
   54924    3.0000987e+00   1.166445e+01   0.000000e+00     30s
   58474    3.0001020e+00   5.183203e+00   0.000000e+00     35s
   59225    3.0000000e+00   0.000000e+00   0.000000e+00     36s

Root relaxation: objective 3.000000e+00, 59225 iterations, 36.13 seconds
Total elapsed time = 69.91s

    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%     -   71s

Explored 0 nodes (109649 simplex iterations) in 71.21 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%