Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:02:37 2013

Optimize a model with 737 rows, 44957 columns and 89847 nonzeros
Presolve time: 0.06s
Presolved: 737 rows, 44957 columns, 89847 nonzeros
Variable types: 44890 continuous, 67 integer (67 binary)

Root relaxation: objective 7.119552e+04, 1621 iterations, 0.04 seconds

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

     0     0 71195.5199    0   11          - 71195.5199     -      -    0s
H    0     0                    79609.000000 71195.5199  10.6%     -    0s
H    0     0                    71815.000000 71195.5199  0.86%     -    0s
     0     0 71515.3896    0    6 71815.0000 71515.3896  0.42%     -    0s
     0     0 71573.3548    0    6 71815.0000 71573.3548  0.34%     -    0s
     0     0 71591.8057    0    5 71815.0000 71591.8057  0.31%     -    0s
     0     0 71591.8057    0   11 71815.0000 71591.8057  0.31%     -    0s
     0     0 71591.8057    0    6 71815.0000 71591.8057  0.31%     -    0s
     0     0 71591.8057    0    5 71815.0000 71591.8057  0.31%     -    0s
     0     0 71591.8057    0    3 71815.0000 71591.8057  0.31%     -    0s
     0     0 71591.8057    0    5 71815.0000 71591.8057  0.31%     -    0s
     0     0 71592.6976    0    5 71815.0000 71592.6976  0.31%     -    1s
     0     0 71592.8451    0    5 71815.0000 71592.8451  0.31%     -    1s
     0     0 71596.3317    0    6 71815.0000 71596.3317  0.30%     -    1s
H    0     0                    71615.000000 71596.3317  0.03%     -    1s
     0     0 71615.0000    0    1 71615.0000 71615.0000   0.0%     -    1s

Cutting planes:
  Implied bound: 146
  Flow cover: 7

Explored 1 nodes (3981 simplex iterations) in 1.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.161500000000e+04, best bound 7.161500000000e+04, gap 0.0%