current bounds on the number of colors: 0 -- 21

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:20 2012

Optimize a model with 131 rows, 221 columns and 540 nonzeros
Presolve removed 5 rows and 50 columns
Presolve time: 0.00s
Presolved: 126 rows, 171 columns, 490 nonzeros
Variable types: 0 continuous, 171 integer (171 binary)

Root relaxation: objective 0.000000e+00, 26 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 (26 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 -- 10

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:20 2012

Optimize a model with 76 rows, 116 columns and 270 nonzeros
Presolve removed 5 rows and 25 columns
Presolve time: 0.00s
Presolved: 71 rows, 91 columns, 245 nonzeros
Variable types: 0 continuous, 91 integer (91 binary)

Root relaxation: objective 0.000000e+00, 25 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%


current bounds on the number of colors: 0 -- 5

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:20 2012

Optimize a model with 43 rows, 53 columns and 108 nonzeros
Presolve removed 27 rows and 35 columns
Presolve time: 0.00s
Presolved: 16 rows, 18 columns, 48 nonzeros
Variable types: 0 continuous, 18 integer (18 binary)

Root relaxation: objective 0.000000e+00, 7 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 (7 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 Fri Dec 14 18:19:20 2012

Optimize a model with 32 rows, 32 columns and 54 nonzeros
Presolve removed 32 rows and 32 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