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 299 rows, 359 columns and 1157 nonzeros
Presolve removed 4 rows and 52 columns
Presolve time: 0.00s
Presolved: 295 rows, 307 columns, 1105 nonzeros
Variable types: 0 continuous, 307 integer (307 binary)

Root relaxation: objective 0.000000e+00, 39 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 (39 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 152 rows, 177 columns and 534 nonzeros
Presolve removed 4 rows and 24 columns
Presolve time: 0.00s
Presolved: 148 rows, 153 columns, 510 nonzeros
Variable types: 0 continuous, 153 integer (153 binary)

Root relaxation: objective 0.000000e+00, 34 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 (34 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 89 rows, 99 columns and 267 nonzeros
Presolve removed 4 rows and 12 columns
Presolve time: 0.00s
Presolved: 85 rows, 87 columns, 255 nonzeros
Variable types: 0 continuous, 87 integer (87 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 -- 3

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

Optimize a model with 47 rows, 47 columns and 89 nonzeros
Presolve removed 47 rows and 47 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 68 rows, 73 columns and 178 nonzeros
Presolve removed 28 rows and 33 columns
Presolve time: 0.00s
Presolved: 40 rows, 40 columns, 120 nonzeros
Variable types: 0 continuous, 40 integer (40 binary)

Root relaxation: objective 0.000000e+00, 19 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 (19 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