current bounds on the number of colors: 0 -- 37

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:34 2012

Optimize a model with 433 rows, 688 columns and 1854 nonzeros
Presolve removed 9 rows and 162 columns
Presolve time: 0.00s
Presolved: 424 rows, 526 columns, 1692 nonzeros
Variable types: 0 continuous, 526 integer (526 binary)

Root relaxation: objective 0.000000e+00, 48 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 (48 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 -- 18

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:34 2012

Optimize a model with 235 rows, 355 columns and 927 nonzeros
Presolve removed 9 rows and 81 columns
Presolve time: 0.00s
Presolved: 226 rows, 274 columns, 846 nonzeros
Variable types: 0 continuous, 274 integer (274 binary)

Root relaxation: objective 0.000000e+00, 48 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 (48 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 -- 9

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:34 2012

Optimize a model with 125 rows, 170 columns and 412 nonzeros
Presolve removed 9 rows and 36 columns
Presolve time: 0.00s
Presolved: 116 rows, 134 columns, 376 nonzeros
Variable types: 0 continuous, 134 integer (134 binary)

Root relaxation: objective 0.000000e+00, 38 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 (38 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 -- 4

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:34 2012

Optimize a model with 81 rows, 96 columns and 206 nonzeros
Presolve removed 39 rows and 49 columns
Presolve time: 0.00s
Presolved: 42 rows, 47 columns, 126 nonzeros
Variable types: 0 continuous, 47 integer (47 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%


current bounds on the number of colors: 0 -- 2

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:34 2012

Optimize a model with 59 rows, 59 columns and 103 nonzeros
Presolve removed 59 rows and 59 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