current bounds on the number of colors: 0 -- 6

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 17:55:52 2012

Optimize a model with 39 rows, 29 columns and 117 nonzeros
Presolve time: 0.00s
Presolved: 39 rows, 29 columns, 117 nonzeros
Variable types: 0 continuous, 29 integer (29 binary)

Root relaxation: objective 0.000000e+00, 12 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    8          -    0.00000     -      -    0s
     0     0    0.00000    0   12          -    0.00000     -      -    0s

Cutting planes:
  Clique: 7
  Zero half: 6

Explored 0 nodes (47 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Model objective exceeds cutoff
Best objective -, best bound 1.000000000000e+00, gap -


current bounds on the number of colors: 3 -- 6

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 17:55:52 2012

Optimize a model with 50 rows, 35 columns and 156 nonzeros
Presolve time: 0.00s
Presolved: 50 rows, 35 columns, 156 nonzeros
Variable types: 0 continuous, 35 integer (35 binary)

Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds

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

*    0     0               0       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (25 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0%


optimal solution found: number of colors: 4