current bounds on the number of colors: 0 -- 67

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:46 2012

Optimize a model with 727 rows, 2231 columns and 4191 nonzeros
Presolve removed 37 rows and 1221 columns
Presolve time: 0.01s
Presolved: 690 rows, 1010 columns, 2970 nonzeros
Variable types: 0 continuous, 1010 integer (1010 binary)

Root relaxation: objective 0.000000e+00, 48 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 (48 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 16:13:46 2012

Optimize a model with 387 rows, 1092 columns and 2032 nonzeros
Presolve removed 37 rows and 592 columns
Presolve time: 0.00s
Presolved: 350 rows, 500 columns, 1440 nonzeros
Variable types: 0 continuous, 500 integer (500 binary)

Root relaxation: objective 0.000000e+00, 48 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 (48 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 16:13:46 2012

Optimize a model with 227 rows, 556 columns and 1016 nonzeros
Presolve removed 37 rows and 296 columns
Presolve time: 0.00s
Presolved: 190 rows, 260 columns, 720 nonzeros
Variable types: 0 continuous, 260 integer (260 binary)

Root relaxation: objective 0.000000e+00, 50 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 (50 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 16:13:46 2012

Optimize a model with 147 rows, 288 columns and 508 nonzeros
Presolve removed 37 rows and 148 columns
Presolve time: 0.00s
Presolved: 110 rows, 140 columns, 360 nonzeros
Variable types: 0 continuous, 140 integer (140 binary)

Root relaxation: objective 0.000000e+00, 44 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 (44 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 16:13:46 2012

Optimize a model with 107 rows, 154 columns and 254 nonzeros
Presolve removed 81 rows and 125 columns
Presolve time: 0.00s
Presolved: 26 rows, 29 columns, 78 nonzeros
Variable types: 0 continuous, 29 integer (29 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 16:13:46 2012

Optimize a model with 87 rows, 87 columns and 127 nonzeros
Presolve removed 87 rows and 87 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