Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:58:15 2012

Optimize a model with 3635 rows, 120 columns and 7270 nonzeros
Presolve removed 2571 rows and 0 columns
Presolve time: 0.14s
Presolved: 1064 rows, 120 columns, 7673 nonzeros
Variable types: 0 continuous, 120 integer (120 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.566833e+01, 485 iterations, 0.03 seconds

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

     0     0   15.66833    0  116    6.00000   15.66833   161%     -    0s
H    0     0                       7.0000000   15.66833   124%     -    0s
H    0     0                       8.0000000   15.66833  95.9%     -    0s
     0     0   15.38795    0  119    8.00000   15.38795  92.3%     -    0s
     0     0   15.34502    0  120    8.00000   15.34502  91.8%     -    0s
     0     0   15.33202    0  120    8.00000   15.33202  91.7%     -    0s
     0     0   15.32706    0  120    8.00000   15.32706  91.6%     -    0s
     0     0   15.32495    0  120    8.00000   15.32495  91.6%     -    0s
H    0     0                       9.0000000   15.32495  70.3%     -    0s
     0     0   15.28693    0  120    9.00000   15.28693  69.9%     -    1s
     0     0   15.27626    0  120    9.00000   15.27626  69.7%     -    1s
     0     0   15.25991    0  120    9.00000   15.25991  69.6%     -    1s
     0     0   15.25897    0  120    9.00000   15.25897  69.5%     -    1s
     0     0   15.25889    0  120    9.00000   15.25889  69.5%     -    1s
     0     2   15.25867    0  120    9.00000   15.25867  69.5%     -    2s

Cutting planes:
  Clique: 65
  Zero half: 3

Explored 471 nodes (33802 simplex iterations) in 4.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%