Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:58:12 2013

Optimize a model with 36050 rows, 3600 columns and 109800 nonzeros
Presolve removed 5381 rows and 1879 columns
Presolve time: 0.24s
Presolved: 30669 rows, 1721 columns, 92919 nonzeros
Variable types: 16 continuous, 1705 integer (1705 binary)
Found heuristic solution: objective 89399.000000

Root relaxation: objective 7.296034e+04, 5556 iterations, 0.37 seconds

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

     0     0 72960.3424    0    9 89399.0000 72960.3424  18.4%     -    0s
H    0     0                    72971.000000 72960.3424  0.01%     -    0s
H    0     0                    72970.000000 72960.3424  0.01%     -    0s
     0     0 72963.3051    0   23 72970.0000 72963.3051  0.01%     -    0s

Cutting planes:
  Gomory: 4
  Implied bound: 2
  MIR: 8
  Zero half: 1

Explored 0 nodes (5629 simplex iterations) in 0.82 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.297000000000e+04, best bound 7.296400000000e+04, gap 0.0082%