current bounds on the number of colors: 0 -- 28

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:25 2012

Optimize a model with 322 rows, 413 columns and 1274 nonzeros
Presolve removed 7 rows and 98 columns
Presolve time: 0.00s
Presolved: 315 rows, 315 columns, 1176 nonzeros
Variable types: 0 continuous, 315 integer (315 binary)

Root relaxation: objective 0.000000e+00, 36 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 (36 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 -- 14

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:25 2012

Optimize a model with 175 rows, 217 columns and 637 nonzeros
Presolve removed 7 rows and 49 columns
Presolve time: 0.00s
Presolved: 168 rows, 168 columns, 588 nonzeros
Variable types: 0 continuous, 168 integer (168 binary)

Root relaxation: objective 0.000000e+00, 35 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 (35 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 Fri Dec 14 18:19:25 2012

Optimize a model with 91 rows, 105 columns and 273 nonzeros
Presolve removed 7 rows and 21 columns
Presolve time: 0.00s
Presolved: 84 rows, 84 columns, 252 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)

Root relaxation: objective 0.000000e+00, 35 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 (35 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 Fri Dec 14 18:19:25 2012

Optimize a model with 49 rows, 49 columns and 91 nonzeros
Presolve removed 49 rows and 49 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 Fri Dec 14 18:19:25 2012

Optimize a model with 70 rows, 77 columns and 182 nonzeros
Presolve removed 28 rows and 35 columns
Presolve time: 0.00s
Presolved: 42 rows, 42 columns, 126 nonzeros
Variable types: 0 continuous, 42 integer (42 binary)

Root relaxation: objective 0.000000e+00, 19 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 (19 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