current bounds on the number of colors: 0 -- 49

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:19 2012

Optimize a model with 409 rows, 1191 columns and 2256 nonzeros
Presolve removed 27 rows and 648 columns
Presolve time: 0.00s
Presolved: 382 rows, 543 columns, 1608 nonzeros
Variable types: 0 continuous, 543 integer (543 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 -- 24

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:19 2012

Optimize a model with 229 rows, 603 columns and 1128 nonzeros
Presolve removed 27 rows and 324 columns
Presolve time: 0.00s
Presolved: 202 rows, 279 columns, 804 nonzeros
Variable types: 0 continuous, 279 integer (279 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 -- 12

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:19 2012

Optimize a model with 139 rows, 309 columns and 564 nonzeros
Presolve removed 27 rows and 162 columns
Presolve time: 0.00s
Presolved: 112 rows, 147 columns, 402 nonzeros
Variable types: 0 continuous, 147 integer (147 binary)

Root relaxation: objective 0.000000e+00, 35 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 (35 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 16:13:19 2012

Optimize a model with 94 rows, 162 columns and 282 nonzeros
Presolve removed 27 rows and 81 columns
Presolve time: 0.00s
Presolved: 67 rows, 81 columns, 201 nonzeros
Variable types: 0 continuous, 81 integer (81 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 16:13:19 2012

Optimize a model with 64 rows, 64 columns and 94 nonzeros
Presolve removed 64 rows and 64 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 16:13:19 2012

Optimize a model with 79 rows, 113 columns and 188 nonzeros
Presolve removed 57 rows and 88 columns
Presolve time: 0.00s
Presolved: 22 rows, 25 columns, 66 nonzeros
Variable types: 0 continuous, 25 integer (25 binary)

Root relaxation: objective 0.000000e+00, 8 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 (8 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