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

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:24 2012

Optimize a model with 391 rows, 1391 columns and 2392 nonzeros
Presolve removed 31 rows and 806 columns
Presolve time: 0.00s
Presolved: 360 rows, 585 columns, 1586 nonzeros
Variable types: 0 continuous, 585 integer (585 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 -- 26

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:24 2012

Optimize a model with 222 rows, 702 columns and 1196 nonzeros
Presolve removed 31 rows and 403 columns
Presolve time: 0.00s
Presolved: 191 rows, 299 columns, 793 nonzeros
Variable types: 0 continuous, 299 integer (299 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 -- 13

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:24 2012

Optimize a model with 131 rows, 331 columns and 552 nonzeros
Presolve removed 31 rows and 186 columns
Presolve time: 0.00s
Presolved: 100 rows, 145 columns, 366 nonzeros
Variable types: 0 continuous, 145 integer (145 binary)

Root relaxation: objective 0.000000e+00, 32 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 (32 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 16:13:24 2012

Optimize a model with 92 rows, 172 columns and 276 nonzeros
Presolve removed 31 rows and 93 columns
Presolve time: 0.00s
Presolved: 61 rows, 79 columns, 183 nonzeros
Variable types: 0 continuous, 79 integer (79 binary)

Root relaxation: objective 0.000000e+00, 32 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 (32 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 16:13:24 2012

Optimize a model with 66 rows, 66 columns and 92 nonzeros
Presolve removed 66 rows and 66 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 16:13:24 2012

Optimize a model with 79 rows, 119 columns and 184 nonzeros
Presolve removed 65 rows and 102 columns
Presolve time: 0.00s
Presolved: 14 rows, 17 columns, 42 nonzeros
Variable types: 0 continuous, 17 integer (17 binary)

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