Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:15 2012

Optimize a model with 421 rows, 418 columns and 1468 nonzeros
Presolve removed 0 rows and 25 columns
Presolve time: 0.00s
Presolved: 421 rows, 393 columns, 1443 nonzeros
Variable types: 0 continuous, 393 integer (392 binary)
Found heuristic solution: objective 85.0000000

Root relaxation: objective 0.000000e+00, 251 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  173   85.00000    0.00000   100%     -    0s
H    0     0                      63.0000000    0.00000   100%     -    0s
H    0     0                      56.0000000    0.00000   100%     -    0s
H    0     0                      53.0000000    0.00000   100%     -    0s
     0     0    0.34457    0  177   53.00000    0.34457  99.3%     -    0s
H    0     0                      43.0000000    0.34457  99.2%     -    0s
     0     0    0.75777    0  179   43.00000    0.75777  98.2%     -    0s
H    0     0                      40.0000000    0.75777  98.1%     -    0s
     0     0    0.75777    0  179   40.00000    0.75777  98.1%     -    0s
H    0     0                      23.0000000    0.75777  96.7%     -    0s
H    0     0                      21.0000000    0.75777  96.4%     -    0s
H    0     0                      20.0000000    0.75777  96.2%     -    0s
     0     2    0.78684    0  179   20.00000    0.78684  96.1%     -    0s
*   19    13              11       7.0000000    1.00000  85.7%  46.8    0s

Cutting planes:
  Gomory: 3
  Mod-K: 1

Explored 58 nodes (3178 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%