current bounds on the number of colors: 0 -- 30

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:27 2012

Optimize a model with 405 rows, 475 columns and 1575 nonzeros
Presolve removed 4 rows and 60 columns
Presolve time: 0.00s
Presolved: 401 rows, 415 columns, 1515 nonzeros
Variable types: 0 continuous, 415 integer (415 binary)

Root relaxation: objective 0.000000e+00, 41 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 (41 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 -- 15

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:27 2012

Optimize a model with 205 rows, 235 columns and 735 nonzeros
Presolve removed 4 rows and 28 columns
Presolve time: 0.00s
Presolved: 201 rows, 207 columns, 707 nonzeros
Variable types: 0 continuous, 207 integer (207 binary)

Root relaxation: objective 0.000000e+00, 41 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 (41 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 Fri Dec 14 18:19:27 2012

Optimize a model with 105 rows, 115 columns and 315 nonzeros
Presolve removed 4 rows and 12 columns
Presolve time: 0.00s
Presolved: 101 rows, 103 columns, 303 nonzeros
Variable types: 0 continuous, 103 integer (103 binary)

Root relaxation: objective 0.000000e+00, 43 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 (43 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 18:19:27 2012

Optimize a model with 55 rows, 55 columns and 105 nonzeros
Presolve removed 55 rows and 55 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 18:19:27 2012

Optimize a model with 80 rows, 85 columns and 210 nonzeros
Presolve removed 32 rows and 37 columns
Presolve time: 0.00s
Presolved: 48 rows, 48 columns, 144 nonzeros
Variable types: 0 continuous, 48 integer (48 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%


optimal solution found: number of colors: 2