current bounds on the number of colors: 0 -- 7

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

Optimize a model with 22 rows, 26 columns and 66 nonzeros
Presolve removed 1 rows and 3 columns
Presolve time: 0.00s
Presolved: 21 rows, 23 columns, 63 nonzeros
Variable types: 0 continuous, 23 integer (23 binary)

Root relaxation: objective 0.000000e+00, 9 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 (9 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 -- 3

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

Optimize a model with 12 rows, 12 columns and 22 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 -


current bounds on the number of colors: 1 -- 3

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

Optimize a model with 17 rows, 19 columns and 44 nonzeros
Presolve removed 7 rows and 8 columns
Presolve time: 0.00s
Presolved: 10 rows, 11 columns, 30 nonzeros
Variable types: 0 continuous, 11 integer (11 binary)

Root relaxation: objective 0.000000e+00, 4 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 (4 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: 2