current bounds on the number of colors: 0 -- 42

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:11 2012

Optimize a model with 231 rows, 891 columns and 1449 nonzeros
Presolve removed 27 rows and 567 columns
Presolve time: 0.00s
Presolved: 204 rows, 324 columns, 882 nonzeros
Variable types: 0 continuous, 324 integer (324 binary)

Root relaxation: objective 0.000000e+00, 23 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 (23 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 -- 21

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:11 2012

Optimize a model with 132 rows, 429 columns and 690 nonzeros
Presolve removed 27 rows and 270 columns
Presolve time: 0.00s
Presolved: 105 rows, 159 columns, 420 nonzeros
Variable types: 0 continuous, 159 integer (159 binary)

Root relaxation: objective 0.000000e+00, 23 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 (23 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 Sat Dec 15 16:13:11 2012

Optimize a model with 87 rows, 219 columns and 345 nonzeros
Presolve removed 27 rows and 135 columns
Presolve time: 0.00s
Presolved: 60 rows, 84 columns, 210 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)

Root relaxation: objective 0.000000e+00, 24 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 (24 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 Sat Dec 15 16:13:11 2012

Optimize a model with 60 rows, 93 columns and 138 nonzeros
Presolve removed 50 rows and 81 columns
Presolve time: 0.00s
Presolved: 10 rows, 12 columns, 30 nonzeros
Variable types: 0 continuous, 12 integer (12 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%


current bounds on the number of colors: 0 -- 2

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:11 2012

Optimize a model with 51 rows, 51 columns and 69 nonzeros
Presolve removed 51 rows and 51 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