current bounds on the number of colors: 0 -- 80

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:13 2012

Optimize a model with 1600 rows, 3238 columns and 7760 nonzeros
Presolve removed 24 rows and 960 columns
Presolve time: 0.02s
Presolved: 1576 rows, 2278 columns, 6800 nonzeros
Variable types: 0 continuous, 2278 integer (2278 binary)

Root relaxation: objective 0.000000e+00, 91 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 (91 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 16:14:13 2012

Optimize a model with 840 rows, 1638 columns and 3880 nonzeros
Presolve removed 24 rows and 480 columns
Presolve time: 0.01s
Presolved: 816 rows, 1158 columns, 3400 nonzeros
Variable types: 0 continuous, 1158 integer (1158 binary)

Root relaxation: objective 0.000000e+00, 91 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 (91 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 16:14:13 2012

Optimize a model with 460 rows, 838 columns and 1940 nonzeros
Presolve removed 24 rows and 240 columns
Presolve time: 0.00s
Presolved: 436 rows, 598 columns, 1700 nonzeros
Variable types: 0 continuous, 598 integer (598 binary)

Root relaxation: objective 0.000000e+00, 90 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 (90 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 16:14:13 2012

Optimize a model with 270 rows, 438 columns and 970 nonzeros
Presolve removed 24 rows and 120 columns
Presolve time: 0.00s
Presolved: 246 rows, 318 columns, 850 nonzeros
Variable types: 0 continuous, 318 integer (318 binary)

Root relaxation: objective 0.000000e+00, 82 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 (82 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 16:14:13 2012

Optimize a model with 156 rows, 198 columns and 388 nonzeros
Presolve removed 102 rows and 137 columns
Presolve time: 0.00s
Presolved: 54 rows, 61 columns, 162 nonzeros
Variable types: 0 continuous, 61 integer (61 binary)

Root relaxation: objective 0.000000e+00, 27 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 (27 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 16:14:13 2012

Optimize a model with 118 rows, 118 columns and 194 nonzeros
Presolve removed 118 rows and 118 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