current bounds on the number of colors: 0 -- 34

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:31 2012

Optimize a model with 476 rows, 604 columns and 1904 nonzeros
Presolve removed 5 rows and 85 columns
Presolve time: 0.00s
Presolved: 471 rows, 519 columns, 1819 nonzeros
Variable types: 0 continuous, 519 integer (519 binary)

Root relaxation: objective 0.000000e+00, 49 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 (49 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 -- 17

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:31 2012

Optimize a model with 242 rows, 298 columns and 896 nonzeros
Presolve removed 5 rows and 40 columns
Presolve time: 0.00s
Presolved: 237 rows, 258 columns, 856 nonzeros
Variable types: 0 continuous, 258 integer (258 binary)

Root relaxation: objective 0.000000e+00, 54 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 (54 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 -- 8

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:31 2012

Optimize a model with 138 rows, 162 columns and 448 nonzeros
Presolve removed 5 rows and 20 columns
Presolve time: 0.00s
Presolved: 133 rows, 142 columns, 428 nonzeros
Variable types: 0 continuous, 142 integer (142 binary)

Root relaxation: objective 0.000000e+00, 48 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 (48 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 18:19:31 2012

Optimize a model with 86 rows, 94 columns and 224 nonzeros
Presolve removed 34 rows and 39 columns
Presolve time: 0.00s
Presolved: 52 rows, 55 columns, 156 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)

Root relaxation: objective 0.000000e+00, 20 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 (20 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 18:19:31 2012

Optimize a model with 60 rows, 60 columns and 112 nonzeros
Presolve removed 60 rows and 60 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