current bounds on the number of colors: 0 -- 12

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

Optimize a model with 42 rows, 77 columns and 162 nonzeros
Presolve removed 4 rows and 24 columns
Presolve time: 0.00s
Presolved: 38 rows, 53 columns, 138 nonzeros
Variable types: 0 continuous, 53 integer (53 binary)

Root relaxation: objective 0.000000e+00, 12 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 (12 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 -- 6

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

Optimize a model with 27 rows, 41 columns and 81 nonzeros
Presolve removed 4 rows and 12 columns
Presolve time: 0.00s
Presolved: 23 rows, 29 columns, 69 nonzeros
Variable types: 0 continuous, 29 integer (29 binary)

Root relaxation: objective 0.000000e+00, 12 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 (12 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 18:19:14 2012

Optimize a model with 17 rows, 17 columns and 27 nonzeros
Presolve removed 17 rows and 17 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 18:19:14 2012

Optimize a model with 22 rows, 29 columns and 54 nonzeros
Presolve removed 16 rows and 22 columns
Presolve time: 0.00s
Presolved: 6 rows, 7 columns, 18 nonzeros
Variable types: 0 continuous, 7 integer (7 binary)

Root relaxation: objective 0.000000e+00, 2 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 (2 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