Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:00:14 2012

Optimize a model with 68035 rows, 54522 columns and 257463 nonzeros
Presolve removed 951 rows and 3963 columns
Presolve time: 5.00s
Presolved: 67084 rows, 50559 columns, 250596 nonzeros
Variable types: 0 continuous, 50559 integer (50559 binary)
Found heuristic solution: objective 233.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   33755    3.0000852e+00   3.211538e+01   0.000000e+00      5s
   38523    3.0000896e+00   4.378903e+01   0.000000e+00     10s
   42099    3.0000941e+00   2.718667e+02   0.000000e+00     15s
   45526    3.0000980e+00   8.226603e+01   0.000000e+00     20s
   48804    3.0001018e+00   2.412382e+01   0.000000e+00     25s
   51784    3.0001052e+00   4.315759e+00   0.000000e+00     30s
   54097    3.0000000e+00   0.000000e+00   0.000000e+00     34s

Root relaxation: objective 3.000000e+00, 54097 iterations, 34.45 seconds
Total elapsed time = 73.59s
Total elapsed time = 79.00s
Total elapsed time = 83.78s
Total elapsed time = 85.85s

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    3.00000    0  124  233.00000    3.00000  98.7%     -   86s
H    0     0                       3.0000000    3.00000   0.0%     -   86s

Explored 0 nodes (158034 simplex iterations) in 86.21 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%