current bounds on the number of colors: 0 -- 81

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:14 2012

Optimize a model with 1601 rows, 3278 columns and 7800 nonzeros
Presolve removed 29 rows and 1160 columns
Presolve time: 0.02s
Presolved: 1572 rows, 2118 columns, 6640 nonzeros
Variable types: 0 continuous, 2118 integer (2118 binary)

Root relaxation: objective 0.000000e+00, 84 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 (84 simplex iterations) in 0.02 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 -- 40

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:14 2012

Optimize a model with 841 rows, 1658 columns and 3900 nonzeros
Presolve removed 29 rows and 580 columns
Presolve time: 0.01s
Presolved: 812 rows, 1078 columns, 3320 nonzeros
Variable types: 0 continuous, 1078 integer (1078 binary)

Root relaxation: objective 0.000000e+00, 84 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 (84 simplex iterations) in 0.01 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 -- 20

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:14 2012

Optimize a model with 461 rows, 848 columns and 1950 nonzeros
Presolve removed 29 rows and 290 columns
Presolve time: 0.00s
Presolved: 432 rows, 558 columns, 1660 nonzeros
Variable types: 0 continuous, 558 integer (558 binary)

Root relaxation: objective 0.000000e+00, 80 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 (80 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 -- 10

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:14 2012

Optimize a model with 271 rows, 443 columns and 975 nonzeros
Presolve removed 29 rows and 145 columns
Presolve time: 0.00s
Presolved: 242 rows, 298 columns, 830 nonzeros
Variable types: 0 continuous, 298 integer (298 binary)

Root relaxation: objective 0.000000e+00, 73 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 (73 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 -- 5

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:14 2012

Optimize a model with 157 rows, 200 columns and 390 nonzeros
Presolve removed 89 rows and 122 columns
Presolve time: 0.00s
Presolved: 68 rows, 78 columns, 204 nonzeros
Variable types: 0 continuous, 78 integer (78 binary)

Root relaxation: objective 0.000000e+00, 28 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 (28 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 Sat Dec 15 16:14:14 2012

Optimize a model with 119 rows, 119 columns and 195 nonzeros
Presolve removed 119 rows and 119 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