Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:47:56 2012

Optimize a model with 55511 rows, 46872 columns and 212326 nonzeros
Presolve removed 887 rows and 4538 columns
Presolve time: 1.45s
Presolved: 54624 rows, 42334 columns, 205124 nonzeros
Variable types: 0 continuous, 42334 integer (42334 binary)
Found heuristic solution: objective 216.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32905    3.0000822e+00   9.338636e+01   0.000000e+00      5s
   37529    3.0000903e+00   5.960776e+01   0.000000e+00     10s
   41337    3.0000940e+00   3.115940e+02   0.000000e+00     15s
   46350    3.0000000e+00   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 3.000000e+00, 46350 iterations, 19.75 seconds
Total elapsed time = 40.57s

    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%     -   45s

Explored 0 nodes (106565 simplex iterations) in 45.43 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%