current bounds on the number of colors: 0 -- 18

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:17 2012

Optimize a model with 162 rows, 178 columns and 594 nonzeros
Presolve removed 1 rows and 9 columns
Presolve time: 0.00s
Presolved: 161 rows, 169 columns, 585 nonzeros
Variable types: 0 continuous, 169 integer (169 binary)

Root relaxation: objective 0.000000e+00, 26 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 (26 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 18:19:17 2012

Optimize a model with 82 rows, 88 columns and 264 nonzeros
Presolve removed 1 rows and 4 columns
Presolve time: 0.00s
Presolved: 81 rows, 84 columns, 260 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)

Root relaxation: objective 0.000000e+00, 31 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 (31 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 18:19:17 2012

Optimize a model with 50 rows, 52 columns and 132 nonzeros
Presolve removed 20 rows and 22 columns
Presolve time: 0.00s
Presolved: 30 rows, 30 columns, 90 nonzeros
Variable types: 0 continuous, 30 integer (30 binary)

Root relaxation: objective 0.000000e+00, 11 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 (11 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 18:19:17 2012

Optimize a model with 34 rows, 34 columns and 66 nonzeros
Presolve removed 34 rows and 34 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