current bounds on the number of colors: 0 -- 32

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:29 2012

Optimize a model with 528 rows, 543 columns and 2000 nonzeros
Presolve removed 3 rows and 48 columns
Presolve time: 0.00s
Presolved: 525 rows, 495 columns, 1952 nonzeros
Variable types: 0 continuous, 495 integer (495 binary)

Root relaxation: objective 0.000000e+00, 45 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 (45 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 -- 16

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:29 2012

Optimize a model with 280 rows, 287 columns and 1000 nonzeros
Presolve removed 3 rows and 24 columns
Presolve time: 0.00s
Presolved: 277 rows, 263 columns, 976 nonzeros
Variable types: 0 continuous, 263 integer (263 binary)

Root relaxation: objective 0.000000e+00, 45 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 (45 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 -- 8

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:29 2012

Optimize a model with 156 rows, 159 columns and 500 nonzeros
Presolve removed 3 rows and 12 columns
Presolve time: 0.00s
Presolved: 153 rows, 147 columns, 488 nonzeros
Variable types: 0 continuous, 147 integer (147 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 -- 4

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:29 2012

Optimize a model with 94 rows, 95 columns and 250 nonzeros
Presolve removed 34 rows and 38 columns
Presolve time: 0.00s
Presolved: 60 rows, 57 columns, 180 nonzeros
Variable types: 0 continuous, 57 integer (57 binary)

Root relaxation: objective 0.000000e+00, 15 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 (15 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 18:19:29 2012

Optimize a model with 63 rows, 63 columns and 125 nonzeros
Presolve removed 63 rows and 63 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