current bounds on the number of colors: 0 -- 39

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012

Optimize a model with 856 rows, 784 columns and 3192 nonzeros
Presolve removed 4 rows and 76 columns
Presolve time: 0.00s
Presolved: 852 rows, 708 columns, 3116 nonzeros
Variable types: 0 continuous, 708 integer (708 binary)

Root relaxation: objective 0.000000e+00, 58 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0    6          -    0.00000     -      -    0s
H    0     0                       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (104 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 -- 19

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012

Optimize a model with 426 rows, 394 columns and 1512 nonzeros
Presolve removed 4 rows and 36 columns
Presolve time: 0.00s
Presolved: 422 rows, 358 columns, 1476 nonzeros
Variable types: 0 continuous, 358 integer (358 binary)

Root relaxation: objective 0.000000e+00, 60 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 (86 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 18:19:37 2012

Optimize a model with 211 rows, 199 columns and 672 nonzeros
Presolve removed 4 rows and 16 columns
Presolve time: 0.00s
Presolved: 207 rows, 183 columns, 656 nonzeros
Variable types: 0 continuous, 183 integer (183 binary)

Root relaxation: objective 0.000000e+00, 68 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 (97 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 18:19:37 2012

Optimize a model with 125 rows, 121 columns and 336 nonzeros
Presolve removed 43 rows and 49 columns
Presolve time: 0.00s
Presolved: 82 rows, 72 columns, 246 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)

Root relaxation: objective 0.000000e+00, 37 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0   31          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (109 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Model objective exceeds cutoff
Best objective -, best bound 1.000000000000e+00, gap -


current bounds on the number of colors: 2 -- 4

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012

Optimize a model with 168 rows, 160 columns and 504 nonzeros
Presolve removed 4 rows and 12 columns
Presolve time: 0.00s
Presolved: 164 rows, 148 columns, 492 nonzeros
Variable types: 0 continuous, 148 integer (148 binary)

Root relaxation: objective 0.000000e+00, 64 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 (112 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: 3