current bounds on the number of colors: 0 -- 10

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 17:55:53 2012

Optimize a model with 110 rows, 70 columns and 350 nonzeros
Presolve time: 0.00s
Presolved: 110 rows, 70 columns, 350 nonzeros
Variable types: 0 continuous, 70 integer (70 binary)

Root relaxation: objective 0.000000e+00, 20 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 (37 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 Thu Dec 13 17:55:53 2012

Optimize a model with 50 rows, 40 columns and 140 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.00s
Presolved: 40 rows, 30 columns, 120 nonzeros
Variable types: 0 continuous, 30 integer (30 binary)

Root relaxation: objective 0.000000e+00, 11 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   10          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (28 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 -- 5

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 17:55:53 2012

Optimize a model with 70 rows, 50 columns and 210 nonzeros
Presolve time: 0.00s
Presolved: 70 rows, 50 columns, 210 nonzeros
Variable types: 0 continuous, 50 integer (50 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 (34 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