Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:02:00 2013

Optimize a model with 135 rows, 100 columns and 360 nonzeros
Presolve removed 45 rows and 45 columns
Presolve time: 0.00s
Presolved: 90 rows, 55 columns, 270 nonzeros
Variable types: 10 continuous, 45 integer (45 binary)
Found heuristic solution: objective 3477.0000000

Root relaxation: objective 6.530000e+02, 41 iterations, 0.00 seconds

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

     0     0  653.00000    0   33 3477.00000  653.00000  81.2%     -    0s
H    0     0                    3420.0000000  653.00000  80.9%     -    0s
     0     0  909.07871    0   27 3420.00000  909.07871  73.4%     -    0s
     0     0  909.07871    0   27 3420.00000  909.07871  73.4%     -    0s
H    0     0                    2346.0000000  909.07871  61.2%     -    0s
     0     2  925.51893    0   27 2346.00000  925.51893  60.5%     -    0s
H   54    47                    2345.0000000  948.48545  59.6%   5.5    0s
*  378   304              18    2334.0000000 1073.10919  54.0%   4.2    0s
*  387   296              18    2317.0000000 1073.10919  53.7%   4.1    0s
*  586   406              18    2243.0000000 1128.75904  49.7%   4.0    0s
H  588   397                    2221.0000000 1128.75904  49.2%   4.0    0s
H 2545   817                    2215.0000000 1175.40514  46.9%   5.3    0s
H 2913   941                    2209.0000000 1196.31879  45.8%   5.2    0s
 71941 10610 2195.00000   26    4 2209.00000 1754.11485  20.6%   2.9    5s
 165618  3128 2183.00000   28    2 2209.00000 2099.00000  4.98%   2.4   10s

Cutting planes:
  Gomory: 16
  Implied bound: 9
  MIR: 59

Explored 171597 nodes (407146 simplex iterations) in 10.31 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.209000000000e+03, best bound 2.208846153846e+03, gap 0.0070%