Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:55:53 2012

Optimize a model with 63559 rows, 51756 columns and 241299 nonzeros
Presolve removed 930 rows and 4542 columns
Presolve time: 4.61s
Presolved: 62629 rows, 47214 columns, 233937 nonzeros
Variable types: 0 continuous, 47214 integer (47214 binary)
Found heuristic solution: objective 227.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32438    3.0000855e+00   2.430769e+01   0.000000e+00      5s
   38673    3.0000894e+00   1.664293e+01   0.000000e+00     10s
   43313    3.0000907e+00   4.113077e+01   0.000000e+00     15s
   47518    3.0000919e+00   5.084670e+00   0.000000e+00     20s
   51977    3.0000000e+00   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 3.000000e+00, 51977 iterations, 24.75 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%     -   56s

Explored 0 nodes (97376 simplex iterations) in 56.01 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%