current bounds on the number of colors: 0 -- 68

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:49 2012

Optimize a model with 816 rows, 2334 columns and 4556 nonzeros
Presolve removed 30 rows and 1020 columns
Presolve time: 0.01s
Presolved: 786 rows, 1314 columns, 3536 nonzeros
Variable types: 0 continuous, 1314 integer (1314 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 -- 34

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:49 2012

Optimize a model with 442 rows, 1178 columns and 2278 nonzeros
Presolve removed 30 rows and 510 columns
Presolve time: 0.00s
Presolved: 412 rows, 668 columns, 1768 nonzeros
Variable types: 0 continuous, 668 integer (668 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 0.00 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 -- 17

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:49 2012

Optimize a model with 244 rows, 566 columns and 1072 nonzeros
Presolve removed 30 rows and 240 columns
Presolve time: 0.00s
Presolved: 214 rows, 326 columns, 832 nonzeros
Variable types: 0 continuous, 326 integer (326 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 0.00 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 16:13:49 2012

Optimize a model with 156 rows, 294 columns and 536 nonzeros
Presolve removed 30 rows and 120 columns
Presolve time: 0.00s
Presolved: 126 rows, 174 columns, 416 nonzeros
Variable types: 0 continuous, 174 integer (174 binary)

Root relaxation: objective 0.000000e+00, 49 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 (49 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 16:13:49 2012

Optimize a model with 112 rows, 158 columns and 268 nonzeros
Presolve removed 90 rows and 131 columns
Presolve time: 0.00s
Presolved: 22 rows, 27 columns, 66 nonzeros
Variable types: 0 continuous, 27 integer (27 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%


current bounds on the number of colors: 0 -- 2

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:49 2012

Optimize a model with 90 rows, 90 columns and 134 nonzeros
Presolve removed 90 rows and 90 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