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

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:30 2012

Optimize a model with 24 rows, 36 columns and 80 nonzeros
Presolve removed 3 rows and 12 columns
Presolve time: 0.00s
Presolved: 21 rows, 24 columns, 68 nonzeros
Variable types: 0 continuous, 24 integer (24 binary)

Root relaxation: objective 0.000000e+00, 8 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 (8 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: 0 -- 4

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:30 2012

Optimize a model with 16 rows, 20 columns and 40 nonzeros
Presolve removed 8 rows and 11 columns
Presolve time: 0.00s
Presolved: 8 rows, 9 columns, 24 nonzeros
Variable types: 0 continuous, 9 integer (9 binary)

Root relaxation: objective 0.000000e+00, 3 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 (3 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: 0 -- 2

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:30 2012

Optimize a model with 12 rows, 12 columns and 20 nonzeros
Presolve removed 12 rows and 12 columns
Presolve time: 0.00s

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

Model objective exceeds cutoff
Best objective -, best bound -, gap -


optimal solution found: number of colors: 2