current bounds on the number of colors: 0 -- 36

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:48 2012

Optimize a model with 1080 rows, 706 columns and 3780 nonzeros
Presolve time: 0.00s
Presolved: 1080 rows, 706 columns, 3780 nonzeros
Variable types: 0 continuous, 706 integer (706 binary)

Root relaxation: objective 0.000000e+00, 73 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 (73 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 -- 18

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:48 2012

Optimize a model with 558 rows, 382 columns and 1890 nonzeros
Presolve time: 0.00s
Presolved: 558 rows, 382 columns, 1890 nonzeros
Variable types: 0 continuous, 382 integer (382 binary)

Root relaxation: objective 0.000000e+00, 65 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 (65 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 Thu Dec 13 19:35:48 2012

Optimize a model with 268 rows, 202 columns and 840 nonzeros
Presolve time: 0.00s
Presolved: 268 rows, 202 columns, 840 nonzeros
Variable types: 0 continuous, 202 integer (202 binary)

Root relaxation: objective 0.000000e+00, 72 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 (72 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 Thu Dec 13 19:35:48 2012

Optimize a model with 152 rows, 130 columns and 420 nonzeros
Presolve removed 36 rows and 36 columns
Presolve time: 0.00s
Presolved: 116 rows, 94 columns, 348 nonzeros
Variable types: 0 continuous, 94 integer (94 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    0.00000    0   36          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (110 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 Thu Dec 13 19:35:48 2012

Optimize a model with 210 rows, 166 columns and 630 nonzeros
Presolve time: 0.00s
Presolved: 210 rows, 166 columns, 630 nonzeros
Variable types: 0 continuous, 166 integer (166 binary)

Root relaxation: objective 0.000000e+00, 79 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   12          -    0.00000     -      -    0s
H    0     0                       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (219 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