Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:28:32 2012

Optimize a model with 461 rows, 447 columns and 1597 nonzeros
Presolve removed 0 rows and 27 columns
Presolve time: 0.00s
Presolved: 461 rows, 420 columns, 1570 nonzeros
Variable types: 0 continuous, 420 integer (419 binary)
Found heuristic solution: objective 84.0000000

Root relaxation: objective 0.000000e+00, 262 iterations, 0.00 seconds

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

     0     0    0.00000    0  182   84.00000    0.00000   100%     -    0s
H    0     0                      83.0000000    0.00000   100%     -    0s
H    0     0                      69.0000000    0.00000   100%     -    0s
H    0     0                      67.0000000    0.00000   100%     -    0s
     0     0    0.27206    0  184   67.00000    0.27206   100%     -    0s
H    0     0                      47.0000000    0.27206  99.4%     -    0s
     0     0    0.80079    0  188   47.00000    0.80079  98.3%     -    0s
H    0     0                      28.0000000    0.80079  97.1%     -    0s
     0     0    0.80079    0  188   28.00000    0.80079  97.1%     -    0s
     0     2    0.81013    0  188   28.00000    0.81013  97.1%     -    0s
H   27    27                      25.0000000    1.00000  96.0%  39.7    0s
H   44    44                      19.0000000    1.00000  94.7%  31.0    0s
*  110    69              22      17.0000000    1.00000  94.1%  28.2    0s
*  168    87              22      16.0000000    3.85714  75.9%  29.4    0s
*  219    91              13      15.0000000    3.94667  73.7%  29.5    0s

Cutting planes:
  Gomory: 4
  Zero half: 1
  Mod-K: 1

Explored 1097 nodes (33901 simplex iterations) in 1.34 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%