current bounds on the number of colors: 0 -- 19

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

Optimize a model with 91 rows, 179 columns and 387 nonzeros
Presolve removed 9 rows and 81 columns
Presolve time: 0.00s
Presolved: 82 rows, 98 columns, 306 nonzeros
Variable types: 0 continuous, 98 integer (98 binary)

Root relaxation: objective 0.000000e+00, 17 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 (17 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 -- 9

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

Optimize a model with 51 rows, 84 columns and 172 nonzeros
Presolve removed 9 rows and 36 columns
Presolve time: 0.00s
Presolved: 42 rows, 48 columns, 136 nonzeros
Variable types: 0 continuous, 48 integer (48 binary)

Root relaxation: objective 0.000000e+00, 16 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 (16 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 -- 4

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

Optimize a model with 35 rows, 46 columns and 86 nonzeros
Presolve removed 21 rows and 31 columns
Presolve time: 0.00s
Presolved: 14 rows, 15 columns, 42 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 Fri Dec 14 18:19:18 2012

Optimize a model with 27 rows, 27 columns and 43 nonzeros
Presolve removed 27 rows and 27 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