Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:51 2013

Optimize a model with 29316 rows, 3136 columns and 89376 nonzeros
Presolve removed 2252 rows and 1577 columns
Presolve time: 0.20s
Presolved: 27064 rows, 1559 columns, 82886 nonzeros
Variable types: 32 continuous, 1527 integer (1527 binary)
Found heuristic solution: objective 60019.000000

Root relaxation: objective 3.968838e+04, 10468 iterations, 0.68 seconds

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

     0     0 39688.3815    0   11 60019.0000 39688.3815  33.9%     -    1s
H    0     0                    39697.000000 39688.3815  0.02%     -    1s
H    0     0                    39695.000000 39688.3815  0.02%     -    1s
     0     0 39690.6450    0   27 39695.0000 39690.6450  0.01%     -    1s
     0     0 39690.6450    0   13 39695.0000 39690.6450  0.01%     -    1s
     0     0 39690.8489    0   33 39695.0000 39690.8489  0.01%     -    1s
     0     1 39690.8545    0   33 39695.0000 39690.8545  0.01%     -    1s

Cutting planes:
  Gomory: 13
  Cover: 1
  Implied bound: 4
  MIR: 9
  Zero half: 12

Explored 5 nodes (10990 simplex iterations) in 1.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.969500000000e+04, best bound 3.969200000000e+04, gap 0.0076%