Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:57:39 2013

Optimize a model with 1633 rows, 54096 columns and 2283359 nonzeros
Presolve removed 3 rows and 11 columns
Presolve time: 3.90s
Presolved: 1630 rows, 54085 columns, 2282502 nonzeros
Variable types: 0 continuous, 54085 integer (54085 binary)
Found heuristic solution: objective 24608.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8730    1.7489196e+04   5.438767e+02   0.000000e+00      5s
   12420    1.7581631e+04   3.333254e+02   0.000000e+00     10s
   13825    1.7594417e+04   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 1.759442e+04, 13825 iterations, 13.35 seconds

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

     0     0 17594.4167    0  217 24608.0000 17594.4167  28.5%     -   19s
H    0     0                    17870.000000 17594.4167  1.54%     -   22s
     0     0 17631.4286    0   66 17870.0000 17631.4286  1.34%     -   27s
H    0     0                    17862.000000 17631.4286  1.29%     -   42s
     0     0 17631.4286    0  128 17862.0000 17631.4286  1.29%     -   55s
     0     0 17631.4286    0  182 17862.0000 17631.4286  1.29%     -   59s
H    0     0                    17829.000000 17631.4286  1.11%     -   60s
     0     0 17633.5556    0  119 17829.0000 17633.5556  1.10%     -   62s
H    0     0                    17634.000000 17633.5556  0.00%     -   63s

Cutting planes:
  Clique: 4
  Zero half: 1

Explored 0 nodes (37008 simplex iterations) in 63.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.763400000000e+04, best bound 1.763400000000e+04, gap 0.0%