Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:05:24 2013

Optimize a model with 62268 rows, 5184 columns and 189216 nonzeros
Presolve removed 4083 rows and 2616 columns
Presolve time: 0.52s
Presolved: 58185 rows, 2568 columns, 176899 nonzeros
Variable types: 34 continuous, 2534 integer (2534 binary)
Found heuristic solution: objective 103117.00000

Root relaxation: objective 7.801553e+04, 19844 iterations, 2.04 seconds

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

     0     0 78015.5333    0    8 103117.000 78015.5333  24.3%     -    2s
H    0     0                    78029.000000 78015.5333  0.02%     -    2s
H    0     0                    78026.000000 78015.5333  0.01%     -    3s
     0     0 78015.5333    0   23 78026.0000 78015.5333  0.01%     -    3s
     0     0 78015.5333    0   16 78026.0000 78015.5333  0.01%     -    3s
     0     0 78015.5333    0   25 78026.0000 78015.5333  0.01%     -    3s
     0     2 78016.1000    0   23 78026.0000 78016.1000  0.01%     -    3s
H   36    23                    78024.000000 78016.3333  0.01%  19.7    4s

Cutting planes:
  MIR: 1
  Zero half: 1

Explored 36 nodes (24264 simplex iterations) in 4.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.802400000000e+04, best bound 7.801700000000e+04, gap 0.0090%