Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:23:40 2013

Optimize a model with 1529 rows, 45116 columns and 1991850 nonzeros
Presolve removed 7 rows and 35 columns (presolve time = 5s) ...
Presolve removed 7 rows and 35 columns
Presolve time: 6.47s
Presolved: 1522 rows, 45081 columns, 1991195 nonzeros
Variable types: 0 continuous, 45081 integer (45081 binary)
Found heuristic solution: objective 21784.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9118    1.5391045e+04   1.834384e+02   0.000000e+00      5s
   13012    1.5477000e+04   1.775000e+01   0.000000e+00     10s
   13250    1.5477000e+04   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 1.547700e+04, 13250 iterations, 10.77 seconds

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

     0     0 15477.0000    0   90 21784.0000 15477.0000  29.0%     -   19s
H    0     0                    16682.000000 15477.0000  7.22%     -   22s
     0     0 15514.0000    0   84 16682.0000 15514.0000  7.00%     -   25s
H    0     0                    15566.000000 15514.0000  0.33%     -   25s
*    0     0               0    15514.000000 15514.0000   0.0%     -   26s

Cutting planes:
  Clique: 7
  Zero half: 19

Explored 0 nodes (15663 simplex iterations) in 26.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.551400000000e+04, best bound 1.551400000000e+04, gap 0.0%