Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:07:30 2012

Optimize a model with 55551 rows, 47306 columns and 212875 nonzeros
Presolve removed 1087 rows and 2 columns
Presolve time: 1.37s
Presolved: 54681 rows, 47304 columns, 256858 nonzeros
Variable types: 0 continuous, 47304 integer (47304 binary)
Found heuristic solution: objective 217.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25230    3.0000856e+00   7.580000e+01   0.000000e+00      5s
   29498    3.0000901e+00   1.997077e+02   0.000000e+00     10s
   33170    3.0000938e+00   3.015000e+01   0.000000e+00     15s
   37386    3.0000987e+00   2.287213e+02   0.000000e+00     20s
   40182    3.0000000e+00   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 3.000000e+00, 40182 iterations, 23.55 seconds
Total elapsed time = 61.14s

    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%     -   63s

Explored 0 nodes (109786 simplex iterations) in 63.71 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%