current bounds on the number of colors: 0 -- 55

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:28 2012

Optimize a model with 406 rows, 1498 columns and 2538 nonzeros
Presolve removed 32 rows and 864 columns
Presolve time: 0.00s
Presolved: 374 rows, 634 columns, 1674 nonzeros
Variable types: 0 continuous, 634 integer (634 binary)

Root relaxation: objective 0.000000e+00, 36 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 (36 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 -- 27

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:28 2012

Optimize a model with 224 rows, 728 columns and 1222 nonzeros
Presolve removed 32 rows and 416 columns
Presolve time: 0.00s
Presolved: 192 rows, 312 columns, 806 nonzeros
Variable types: 0 continuous, 312 integer (312 binary)

Root relaxation: objective 0.000000e+00, 36 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 (36 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 16:13:28 2012

Optimize a model with 133 rows, 343 columns and 564 nonzeros
Presolve removed 32 rows and 192 columns
Presolve time: 0.00s
Presolved: 101 rows, 151 columns, 372 nonzeros
Variable types: 0 continuous, 151 integer (151 binary)

Root relaxation: objective 0.000000e+00, 34 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%


current bounds on the number of colors: 0 -- 6

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:28 2012

Optimize a model with 94 rows, 178 columns and 282 nonzeros
Presolve removed 32 rows and 96 columns
Presolve time: 0.00s
Presolved: 62 rows, 82 columns, 186 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)

Root relaxation: objective 0.000000e+00, 31 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 (31 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 16:13:28 2012

Optimize a model with 68 rows, 68 columns and 94 nonzeros
Presolve removed 68 rows and 68 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 16:13:28 2012

Optimize a model with 81 rows, 123 columns and 188 nonzeros
Presolve removed 71 rows and 111 columns
Presolve time: 0.00s
Presolved: 10 rows, 12 columns, 30 nonzeros
Variable types: 0 continuous, 12 integer (12 binary)

Root relaxation: objective 0.000000e+00, 5 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 (5 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