current bounds on the number of colors: 0 -- 53

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:25 2012

Optimize a model with 495 rows, 1395 columns and 2704 nonzeros
Presolve removed 29 rows and 754 columns
Presolve time: 0.00s
Presolved: 466 rows, 641 columns, 1950 nonzeros
Variable types: 0 continuous, 641 integer (641 binary)

Root relaxation: objective 0.000000e+00, 39 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 (39 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 -- 26

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:25 2012

Optimize a model with 274 rows, 706 columns and 1352 nonzeros
Presolve removed 29 rows and 377 columns
Presolve time: 0.00s
Presolved: 245 rows, 329 columns, 975 nonzeros
Variable types: 0 continuous, 329 integer (329 binary)

Root relaxation: objective 0.000000e+00, 39 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 (39 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 -- 13

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:25 2012

Optimize a model with 155 rows, 335 columns and 624 nonzeros
Presolve removed 29 rows and 174 columns
Presolve time: 0.00s
Presolved: 126 rows, 161 columns, 450 nonzeros
Variable types: 0 continuous, 161 integer (161 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       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (38 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 -- 6

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:25 2012

Optimize a model with 104 rows, 176 columns and 312 nonzeros
Presolve removed 29 rows and 87 columns
Presolve time: 0.00s
Presolved: 75 rows, 89 columns, 225 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)

Root relaxation: objective 0.000000e+00, 33 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 (33 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 16:13:25 2012

Optimize a model with 70 rows, 70 columns and 104 nonzeros
Presolve removed 70 rows and 70 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 16:13:25 2012

Optimize a model with 87 rows, 123 columns and 208 nonzeros
Presolve removed 61 rows and 94 columns
Presolve time: 0.00s
Presolved: 26 rows, 29 columns, 78 nonzeros
Variable types: 0 continuous, 29 integer (29 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       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (11 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