Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:39:22 2012

Optimize a model with 47267 rows, 41006 columns and 181798 nonzeros
Presolve removed 1239 rows and 5052 columns
Presolve time: 1.26s
Presolved: 46028 rows, 35954 columns, 173262 nonzeros
Variable types: 0 continuous, 35954 integer (35954 binary)
Found heuristic solution: objective 202.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25693    3.0000782e+00   2.557447e+01   0.000000e+00      5s
   29977    3.0000824e+00   4.544560e+01   0.000000e+00     10s
   34387    3.0000870e+00   9.589562e+00   0.000000e+00     15s
   38545    3.0000907e+00   9.073786e+01   0.000000e+00     20s
   41116    3.0000000e+00   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 3.000000e+00, 41116 iterations, 23.18 seconds
Total elapsed time = 50.06s

    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%     -   52s

Explored 0 nodes (91878 simplex iterations) in 53.00 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%