current bounds on the number of colors: 0 -- 18

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:34 2012

Optimize a model with 126 rows, 174 columns and 486 nonzeros
Presolve removed 6 rows and 54 columns
Presolve time: 0.00s
Presolved: 120 rows, 120 columns, 432 nonzeros
Variable types: 0 continuous, 120 integer (120 binary)

Root relaxation: objective 0.000000e+00, 21 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 (21 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 -- 9

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:34 2012

Optimize a model with 66 rows, 84 columns and 216 nonzeros
Presolve removed 6 rows and 24 columns
Presolve time: 0.00s
Presolved: 60 rows, 60 columns, 192 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)

Root relaxation: objective 0.000000e+00, 22 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 (22 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 19:35:34 2012

Optimize a model with 42 rows, 48 columns and 108 nonzeros
Presolve removed 18 rows and 24 columns
Presolve time: 0.00s
Presolved: 24 rows, 24 columns, 72 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 -- 2

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:34 2012

Optimize a model with 30 rows, 30 columns and 54 nonzeros
Presolve removed 30 rows and 30 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