current bounds on the number of colors: 0 -- 22

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:20 2012

Optimize a model with 132 rows, 252 columns and 572 nonzeros
Presolve removed 9 rows and 99 columns
Presolve time: 0.00s
Presolved: 123 rows, 153 columns, 473 nonzeros
Variable types: 0 continuous, 153 integer (153 binary)

Root relaxation: objective 0.000000e+00, 21 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 (21 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 -- 11

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:20 2012

Optimize a model with 72 rows, 120 columns and 260 nonzeros
Presolve removed 9 rows and 45 columns
Presolve time: 0.00s
Presolved: 63 rows, 75 columns, 215 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)

Root relaxation: objective 0.000000e+00, 21 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 (21 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 Fri Dec 14 18:19:20 2012

Optimize a model with 42 rows, 54 columns and 104 nonzeros
Presolve removed 24 rows and 34 columns
Presolve time: 0.00s
Presolved: 18 rows, 20 columns, 54 nonzeros
Variable types: 0 continuous, 20 integer (20 binary)

Root relaxation: objective 0.000000e+00, 7 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 (7 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 Fri Dec 14 18:19:20 2012

Optimize a model with 32 rows, 32 columns and 52 nonzeros
Presolve removed 32 rows and 32 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