current bounds on the number of colors: 0 -- 30

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:58 2012

Optimize a model with 75 rows, 453 columns and 585 nonzeros
Presolve removed 24 rows and 360 columns
Presolve time: 0.00s
Presolved: 51 rows, 93 columns, 225 nonzeros
Variable types: 0 continuous, 93 integer (93 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 -- 15

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:58 2012

Optimize a model with 51 rows, 213 columns and 273 nonzeros
Presolve removed 24 rows and 168 columns
Presolve time: 0.00s
Presolved: 27 rows, 45 columns, 105 nonzeros
Variable types: 0 continuous, 45 integer (45 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 -- 7

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:12:58 2012

Optimize a model with 39 rows, 93 columns and 117 nonzeros
Presolve removed 24 rows and 72 columns
Presolve time: 0.00s
Presolved: 15 rows, 21 columns, 45 nonzeros
Variable types: 0 continuous, 21 integer (21 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 Sat Dec 15 16:12:58 2012

Optimize a model with 33 rows, 33 columns and 39 nonzeros
Presolve removed 33 rows and 33 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 16:12:58 2012

Optimize a model with 36 rows, 63 columns and 78 nonzeros
Presolve removed 36 rows and 63 columns
Presolve time: 0.00s

Explored 0 nodes (0 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