current bounds on the number of colors: 0 -- 46

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

Optimize a model with 253 rows, 1067 columns and 1679 nonzeros
Presolve removed 31 rows and 713 columns
Presolve time: 0.00s
Presolved: 222 rows, 354 columns, 966 nonzeros
Variable types: 0 continuous, 354 integer (354 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 -- 23

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

Optimize a model with 145 rows, 515 columns and 803 nonzeros
Presolve removed 31 rows and 341 columns
Presolve time: 0.00s
Presolved: 114 rows, 174 columns, 462 nonzeros
Variable types: 0 continuous, 174 integer (174 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 -- 11

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

Optimize a model with 91 rows, 239 columns and 365 nonzeros
Presolve removed 31 rows and 155 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, 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 -- 5

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

Optimize a model with 64 rows, 101 columns and 146 nonzeros
Presolve removed 52 rows and 86 columns
Presolve time: 0.00s
Presolved: 12 rows, 15 columns, 36 nonzeros
Variable types: 0 continuous, 15 integer (15 binary)

Root relaxation: objective 0.000000e+00, 6 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 (6 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 16:13:15 2012

Optimize a model with 55 rows, 55 columns and 73 nonzeros
Presolve removed 55 rows and 55 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