current bounds on the number of colors: 0 -- 26

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:24 2012

Optimize a model with 234 rows, 354 columns and 962 nonzeros
Presolve removed 5 rows and 65 columns
Presolve time: 0.00s
Presolved: 229 rows, 289 columns, 897 nonzeros
Variable types: 0 continuous, 289 integer (289 binary)

Root relaxation: objective 0.000000e+00, 35 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 (35 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 18:19:24 2012

Optimize a model with 122 rows, 172 columns and 444 nonzeros
Presolve removed 5 rows and 30 columns
Presolve time: 0.00s
Presolved: 117 rows, 142 columns, 414 nonzeros
Variable types: 0 continuous, 142 integer (142 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 -- 6

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:24 2012

Optimize a model with 74 rows, 94 columns and 222 nonzeros
Presolve removed 5 rows and 15 columns
Presolve time: 0.00s
Presolved: 69 rows, 79 columns, 207 nonzeros
Variable types: 0 continuous, 79 integer (79 binary)

Root relaxation: objective 0.000000e+00, 32 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 (32 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 18:19:24 2012

Optimize a model with 42 rows, 42 columns and 74 nonzeros
Presolve removed 42 rows and 42 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 18:19:24 2012

Optimize a model with 58 rows, 68 columns and 148 nonzeros
Presolve removed 26 rows and 31 columns
Presolve time: 0.00s
Presolved: 32 rows, 37 columns, 96 nonzeros
Variable types: 0 continuous, 37 integer (37 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