current bounds on the number of colors: 0 -- 25

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:54 2012

Optimize a model with 61 rows, 303 columns and 408 nonzeros
Presolve removed 20 rows and 240 columns
Presolve time: 0.00s
Presolved: 41 rows, 63 columns, 168 nonzeros
Variable types: 0 continuous, 63 integer (63 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 -- 12

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:54 2012

Optimize a model with 43 rows, 153 columns and 204 nonzeros
Presolve removed 20 rows and 120 columns
Presolve time: 0.00s
Presolved: 23 rows, 33 columns, 84 nonzeros
Variable types: 0 continuous, 33 integer (33 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 -- 6

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:54 2012

Optimize a model with 34 rows, 78 columns and 102 nonzeros
Presolve removed 20 rows and 60 columns
Presolve time: 0.00s
Presolved: 14 rows, 18 columns, 42 nonzeros
Variable types: 0 continuous, 18 integer (18 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 -- 3

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:54 2012

Optimize a model with 28 rows, 28 columns and 34 nonzeros
Presolve removed 28 rows and 28 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 Sat Dec 15 16:12:54 2012

Optimize a model with 31 rows, 53 columns and 68 nonzeros
Presolve removed 27 rows and 48 columns
Presolve time: 0.00s
Presolved: 4 rows, 5 columns, 12 nonzeros
Variable types: 0 continuous, 5 integer (5 binary)

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