current bounds on the number of colors: 0 -- 15

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:33 2012

Optimize a model with 92 rows, 116 columns and 336 nonzeros
Presolve removed 3 rows and 21 columns
Presolve time: 0.00s
Presolved: 89 rows, 95 columns, 315 nonzeros
Variable types: 0 continuous, 95 integer (95 binary)

Root relaxation: objective 0.000000e+00, 22 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 (22 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 Thu Dec 13 19:35:33 2012

Optimize a model with 48 rows, 56 columns and 144 nonzeros
Presolve removed 3 rows and 9 columns
Presolve time: 0.00s
Presolved: 45 rows, 47 columns, 135 nonzeros
Variable types: 0 continuous, 47 integer (47 binary)

Root relaxation: objective 0.000000e+00, 18 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 (18 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 Thu Dec 13 19:35:33 2012

Optimize a model with 26 rows, 26 columns and 48 nonzeros
Presolve removed 26 rows and 26 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 Thu Dec 13 19:35:33 2012

Optimize a model with 37 rows, 41 columns and 96 nonzeros
Presolve removed 15 rows and 18 columns
Presolve time: 0.00s
Presolved: 22 rows, 23 columns, 66 nonzeros
Variable types: 0 continuous, 23 integer (23 binary)

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