current bounds on the number of colors: 0 -- 160

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:25 2012

Optimize a model with 10400 rows, 12928 columns and 43520 nonzeros
Presolve removed 30 rows and 2400 columns
Presolve time: 0.11s
Presolved: 10370 rows, 10528 columns, 41120 nonzeros
Variable types: 0 continuous, 10528 integer (10528 binary)

Root relaxation: objective 0.000000e+00, 218 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 (218 simplex iterations) in 0.12 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 -- 80

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:25 2012

Optimize a model with 5280 rows, 6528 columns and 21760 nonzeros
Presolve removed 30 rows and 1200 columns
Presolve time: 0.05s
Presolved: 5250 rows, 5328 columns, 20560 nonzeros
Variable types: 0 continuous, 5328 integer (5328 binary)

Root relaxation: objective 0.000000e+00, 219 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 (219 simplex iterations) in 0.05 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 -- 40

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:25 2012

Optimize a model with 2720 rows, 3328 columns and 10880 nonzeros
Presolve removed 30 rows and 600 columns
Presolve time: 0.02s
Presolved: 2690 rows, 2728 columns, 10280 nonzeros
Variable types: 0 continuous, 2728 integer (2728 binary)

Root relaxation: objective 0.000000e+00, 218 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 (218 simplex iterations) in 0.02 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 -- 20

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:26 2012

Optimize a model with 1440 rows, 1728 columns and 5440 nonzeros
Presolve removed 30 rows and 300 columns
Presolve time: 0.01s
Presolved: 1410 rows, 1428 columns, 5140 nonzeros
Variable types: 0 continuous, 1428 integer (1428 binary)

Root relaxation: objective 0.000000e+00, 214 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 (214 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 -- 10

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:26 2012

Optimize a model with 800 rows, 928 columns and 2720 nonzeros
Presolve removed 30 rows and 150 columns
Presolve time: 0.00s
Presolved: 770 rows, 778 columns, 2570 nonzeros
Variable types: 0 continuous, 778 integer (778 binary)

Root relaxation: objective 0.000000e+00, 206 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 (206 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 -- 5

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:26 2012

Optimize a model with 416 rows, 448 columns and 1088 nonzeros
Presolve removed 164 rows and 196 columns
Presolve time: 0.00s
Presolved: 252 rows, 252 columns, 756 nonzeros
Variable types: 0 continuous, 252 integer (252 binary)

Root relaxation: objective 0.000000e+00, 127 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   91          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (376 simplex iterations) in 0.00 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 16:21:26 2012

Optimize a model with 544 rows, 608 columns and 1632 nonzeros
Presolve removed 30 rows and 90 columns
Presolve time: 0.00s
Presolved: 514 rows, 518 columns, 1542 nonzeros
Variable types: 0 continuous, 518 integer (518 binary)

Root relaxation: objective 0.000000e+00, 202 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 (202 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