current bounds on the number of colors: 0 -- 26

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:23 2012

Optimize a model with 286 rows, 358 columns and 1118 nonzeros
Presolve removed 7 rows and 91 columns
Presolve time: 0.00s
Presolved: 279 rows, 267 columns, 1027 nonzeros
Variable types: 0 continuous, 267 integer (267 binary)

Root relaxation: objective 0.000000e+00, 33 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 (33 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 -- 13

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:23 2012

Optimize a model with 146 rows, 176 columns and 516 nonzeros
Presolve removed 7 rows and 42 columns
Presolve time: 0.00s
Presolved: 139 rows, 134 columns, 474 nonzeros
Variable types: 0 continuous, 134 integer (134 binary)

Root relaxation: objective 0.000000e+00, 36 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 (36 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 18:19:23 2012

Optimize a model with 86 rows, 98 columns and 258 nonzeros
Presolve removed 7 rows and 21 columns
Presolve time: 0.00s
Presolved: 79 rows, 77 columns, 237 nonzeros
Variable types: 0 continuous, 77 integer (77 binary)

Root relaxation: objective 0.000000e+00, 29 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 (29 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 18:19:23 2012

Optimize a model with 46 rows, 46 columns and 86 nonzeros
Presolve removed 46 rows and 46 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 18:19:23 2012

Optimize a model with 66 rows, 72 columns and 172 nonzeros
Presolve removed 26 rows and 33 columns
Presolve time: 0.00s
Presolved: 40 rows, 39 columns, 120 nonzeros
Variable types: 0 continuous, 39 integer (39 binary)

Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0   15          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (66 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Model objective exceeds cutoff
Best objective -, best bound 1.000000000000e+00, gap -


optimal solution found: number of colors: 3