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

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

Optimize a model with 81 rows, 169 columns and 351 nonzeros
Presolve removed 9 rows and 81 columns
Presolve time: 0.00s
Presolved: 72 rows, 88 columns, 270 nonzeros
Variable types: 0 continuous, 88 integer (88 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 -- 9

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

Optimize a model with 46 rows, 79 columns and 156 nonzeros
Presolve removed 9 rows and 36 columns
Presolve time: 0.00s
Presolved: 37 rows, 43 columns, 120 nonzeros
Variable types: 0 continuous, 43 integer (43 binary)

Root relaxation: objective 0.000000e+00, 15 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 (15 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 32 rows, 43 columns and 78 nonzeros
Presolve removed 18 rows and 27 columns
Presolve time: 0.00s
Presolved: 14 rows, 16 columns, 42 nonzeros
Variable types: 0 continuous, 16 integer (16 binary)

Root relaxation: objective 0.000000e+00, 7 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 (7 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 25 rows, 25 columns and 39 nonzeros
Presolve removed 25 rows and 25 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