Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:14:53 2013

Optimize a model with 1367 rows, 38780 columns and 1569721 nonzeros
Presolve removed 29 rows and 132 columns (presolve time = 5s) ...
Presolve removed 30 rows and 141 columns
Presolve time: 6.71s
Presolved: 1337 rows, 38639 columns, 1564333 nonzeros
Variable types: 0 continuous, 38639 integer (38639 binary)
Found heuristic solution: objective 19760.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9163    1.2537642e+04   3.426438e+02   0.000000e+00      5s
   11332    1.2555567e+04   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 1.255557e+04, 11332 iterations, 7.75 seconds
Total elapsed time = 15.13s

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

     0     0 12555.5667    0  161 19760.0000 12555.5667  36.5%     -   15s
H    0     0                    12798.000000 12555.5667  1.89%     -   26s
     0     0 12569.1667    0  121 12798.0000 12569.1667  1.79%     -   29s
H    0     0                    12790.000000 12569.1667  1.73%     -   39s
     0     0 12569.1667    0  143 12790.0000 12569.1667  1.73%     -   44s
H    0     0                    12576.000000 12569.1667  0.05%     -   46s
     0     0 12569.1667    0  121 12576.0000 12569.1667  0.05%     -   47s
     0     0 12576.0000    0  121 12576.0000 12576.0000   0.0%     -   53s

Cutting planes:
  Clique: 8
  Zero half: 3

Explored 1 nodes (23939 simplex iterations) in 53.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.257600000000e+04, best bound 1.257600000000e+04, gap 0.0%