current bounds on the number of colors: 0 -- 8

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

Optimize a model with 84 rows, 51 columns and 260 nonzeros
Presolve time: 0.00s
Presolved: 84 rows, 51 columns, 260 nonzeros
Variable types: 0 continuous, 51 integer (51 binary)

Root relaxation: objective 0.000000e+00, 18 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    6          -    0.00000     -      -    0s
     0     0    0.00000    0   13          -    0.00000     -      -    0s
     0     0    0.00000    0   12          -    0.00000     -      -    0s

Cutting planes:
  Gomory: 1
  Clique: 6
  Zero half: 5

Explored 0 nodes (139 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: 4 -- 8

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

Optimize a model with 122 rows, 67 columns and 390 nonzeros
Presolve time: 0.00s
Presolved: 122 rows, 67 columns, 390 nonzeros
Variable types: 0 continuous, 67 integer (67 binary)

Root relaxation: objective 0.000000e+00, 19 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 (49 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%


current bounds on the number of colors: 4 -- 6

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

Optimize a model with 103 rows, 59 columns and 325 nonzeros
Presolve time: 0.00s
Presolved: 103 rows, 59 columns, 325 nonzeros
Variable types: 0 continuous, 59 integer (59 binary)

Root relaxation: objective 0.000000e+00, 20 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 (34 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: 5