current bounds on the number of colors: 0 -- 186

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:25 2012

Optimize a model with 17856 rows, 17488 columns and 70308 nonzeros
Presolve removed 23 rows and 2139 columns
Presolve time: 0.13s
Presolved: 17833 rows, 15349 columns, 68169 nonzeros
Variable types: 0 continuous, 15349 integer (15349 binary)

Root relaxation: objective 0.000000e+00, 289 iterations, 0.01 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 (289 simplex iterations) in 0.15 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 -- 93

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:26 2012

Optimize a model with 8926 rows, 8746 columns and 34776 nonzeros
Presolve removed 23 rows and 1058 columns
Presolve time: 0.08s
Presolved: 8903 rows, 7688 columns, 33718 nonzeros
Variable types: 0 continuous, 7688 integer (7688 binary)

Root relaxation: objective 0.000000e+00, 289 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 (289 simplex iterations) in 0.09 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 -- 46

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:26 2012

Optimize a model with 4556 rows, 4468 columns and 17388 nonzeros
Presolve removed 23 rows and 529 columns
Presolve time: 0.03s
Presolved: 4533 rows, 3939 columns, 16859 nonzeros
Variable types: 0 continuous, 3939 integer (3939 binary)

Root relaxation: objective 0.000000e+00, 291 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 (291 simplex iterations) in 0.03 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 -- 23

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:26 2012

Optimize a model with 2276 rows, 2236 columns and 8316 nonzeros
Presolve removed 23 rows and 253 columns
Presolve time: 0.01s
Presolved: 2253 rows, 1983 columns, 8063 nonzeros
Variable types: 0 continuous, 1983 integer (1983 binary)

Root relaxation: objective 0.000000e+00, 301 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 (301 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 -- 11

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:26 2012

Optimize a model with 1136 rows, 1120 columns and 3780 nonzeros
Presolve removed 23 rows and 115 columns
Presolve time: 0.00s
Presolved: 1113 rows, 1005 columns, 3665 nonzeros
Variable types: 0 continuous, 1005 integer (1005 binary)

Root relaxation: objective 0.000000e+00, 267 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 (267 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 -- 5

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:26 2012

Optimize a model with 566 rows, 562 columns and 1512 nonzeros
Presolve removed 192 rows and 218 columns
Presolve time: 0.00s
Presolved: 374 rows, 344 columns, 1122 nonzeros
Variable types: 0 continuous, 344 integer (344 binary)

Root relaxation: objective 0.000000e+00, 167 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    0.00000    0  149          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (551 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Model objective exceeds cutoff
Best objective -, best bound 1.000000000000e+00, gap -


current bounds on the number of colors: 2 -- 5

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:26 2012

Optimize a model with 756 rows, 748 columns and 2268 nonzeros
Presolve removed 23 rows and 69 columns
Presolve time: 0.00s
Presolved: 733 rows, 679 columns, 2199 nonzeros
Variable types: 0 continuous, 679 integer (679 binary)

Root relaxation: objective 0.000000e+00, 274 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 (274 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: 3