current bounds on the number of colors: 0 -- 66

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:45 2012

Optimize a model with 957 rows, 2205 columns and 4851 nonzeros
Presolve removed 28 rows and 924 columns
Presolve time: 0.01s
Presolved: 929 rows, 1281 columns, 3927 nonzeros
Variable types: 0 continuous, 1281 integer (1281 binary)

Root relaxation: objective 0.000000e+00, 60 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 (60 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 -- 33

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:45 2012

Optimize a model with 498 rows, 1083 columns and 2352 nonzeros
Presolve removed 28 rows and 448 columns
Presolve time: 0.00s
Presolved: 470 rows, 635 columns, 1904 nonzeros
Variable types: 0 continuous, 635 integer (635 binary)

Root relaxation: objective 0.000000e+00, 61 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 (61 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 -- 16

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:45 2012

Optimize a model with 282 rows, 555 columns and 1176 nonzeros
Presolve removed 28 rows and 224 columns
Presolve time: 0.00s
Presolved: 254 rows, 331 columns, 952 nonzeros
Variable types: 0 continuous, 331 integer (331 binary)

Root relaxation: objective 0.000000e+00, 62 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 (62 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 -- 8

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:45 2012

Optimize a model with 174 rows, 291 columns and 588 nonzeros
Presolve removed 28 rows and 112 columns
Presolve time: 0.00s
Presolved: 146 rows, 179 columns, 476 nonzeros
Variable types: 0 continuous, 179 integer (179 binary)

Root relaxation: objective 0.000000e+00, 53 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 (53 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 -- 4

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:45 2012

Optimize a model with 120 rows, 159 columns and 294 nonzeros
Presolve removed 80 rows and 115 columns
Presolve time: 0.00s
Presolved: 40 rows, 44 columns, 120 nonzeros
Variable types: 0 continuous, 44 integer (44 binary)

Root relaxation: objective 0.000000e+00, 18 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 (18 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 -- 2

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:45 2012

Optimize a model with 93 rows, 93 columns and 147 nonzeros
Presolve removed 93 rows and 93 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 -


optimal solution found: number of colors: 2