current bounds on the number of colors: 0 -- 59

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:33 2012

Optimize a model with 697 rows, 1733 columns and 3625 nonzeros
Presolve removed 25 rows and 725 columns
Presolve time: 0.01s
Presolved: 672 rows, 1008 columns, 2900 nonzeros
Variable types: 0 continuous, 1008 integer (1008 binary)

Root relaxation: objective 0.000000e+00, 54 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 (54 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 -- 29

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:34 2012

Optimize a model with 367 rows, 848 columns and 1750 nonzeros
Presolve removed 25 rows and 350 columns
Presolve time: 0.00s
Presolved: 342 rows, 498 columns, 1400 nonzeros
Variable types: 0 continuous, 498 integer (498 binary)

Root relaxation: objective 0.000000e+00, 55 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 (55 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 -- 14

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:34 2012

Optimize a model with 213 rows, 435 columns and 875 nonzeros
Presolve removed 25 rows and 175 columns
Presolve time: 0.00s
Presolved: 188 rows, 260 columns, 700 nonzeros
Variable types: 0 continuous, 260 integer (260 binary)

Root relaxation: objective 0.000000e+00, 54 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 (54 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 -- 7

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:34 2012

Optimize a model with 125 rows, 199 columns and 375 nonzeros
Presolve removed 25 rows and 75 columns
Presolve time: 0.00s
Presolved: 100 rows, 124 columns, 300 nonzeros
Variable types: 0 continuous, 124 integer (124 binary)

Root relaxation: objective 0.000000e+00, 44 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 (44 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 -- 3

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:34 2012

Optimize a model with 81 rows, 81 columns and 125 nonzeros
Presolve removed 81 rows and 81 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 -


current bounds on the number of colors: 1 -- 3

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:34 2012

Optimize a model with 103 rows, 140 columns and 250 nonzeros
Presolve removed 71 rows and 102 columns
Presolve time: 0.00s
Presolved: 32 rows, 38 columns, 96 nonzeros
Variable types: 0 continuous, 38 integer (38 binary)

Root relaxation: objective 0.000000e+00, 14 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 (14 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: 2