current bounds on the number of colors: 0 -- 82

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:40:25 2012

Optimize a model with 14514 rows, 3714 columns and 46658 nonzeros
Presolve time: 0.08s
Presolved: 14514 rows, 3714 columns, 46658 nonzeros
Variable types: 0 continuous, 3714 integer (3714 binary)

Root relaxation: objective 0.000000e+00, 207 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 (384 simplex iterations) in 0.11 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 -- 41

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:40:25 2012

Optimize a model with 7122 rows, 1992 columns and 22760 nonzeros
Presolve time: 0.03s
Presolved: 7122 rows, 1992 columns, 22760 nonzeros
Variable types: 0 continuous, 1992 integer (1992 binary)

Root relaxation: objective 0.000000e+00, 174 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 (329 simplex iterations) in 0.04 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 Thu Dec 13 19:40:25 2012

Optimize a model with 3602 rows, 1172 columns and 11380 nonzeros
Presolve time: 0.01s
Presolved: 3602 rows, 1172 columns, 11380 nonzeros
Variable types: 0 continuous, 1172 integer (1172 binary)

Root relaxation: objective 0.000000e+00, 171 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 (309 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 -- 10

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:40:26 2012

Optimize a model with 1842 rows, 762 columns and 5690 nonzeros
Presolve time: 0.00s
Presolved: 1842 rows, 762 columns, 5690 nonzeros
Variable types: 0 continuous, 762 integer (762 binary)

Root relaxation: objective 0.000000e+00, 178 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   82          -    0.00000     -      -    0s
H    0     0                       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (984 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 -- 5

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:40:26 2012

Optimize a model with 786 rows, 516 columns and 2276 nonzeros
Presolve removed 82 rows and 82 columns
Presolve time: 0.00s
Presolved: 704 rows, 434 columns, 2112 nonzeros
Variable types: 0 continuous, 434 integer (434 binary)

Root relaxation: objective 0.000000e+00, 83 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   82          -    0.00000     -      -    0s

Explored 0 nodes (343 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 Thu Dec 13 19:40:26 2012

Optimize a model with 1138 rows, 598 columns and 3414 nonzeros
Presolve time: 0.00s
Presolved: 1138 rows, 598 columns, 3414 nonzeros
Variable types: 0 continuous, 598 integer (598 binary)

Root relaxation: objective 0.000000e+00, 172 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  116          -    0.00000     -      -    0s
     0     0    0.00000    0  164          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (2051 simplex iterations) in 0.10 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: 3 -- 5

Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:40:26 2012

Optimize a model with 1490 rows, 680 columns and 4552 nonzeros
Presolve time: 0.00s
Presolved: 1490 rows, 680 columns, 4552 nonzeros
Variable types: 0 continuous, 680 integer (680 binary)

Root relaxation: objective 0.000000e+00, 184 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  106          -    0.00000     -      -    0s
*    0     0               0       0.0000000    0.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 26
  Zero half: 114

Explored 0 nodes (1795 simplex iterations) in 0.08 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: 4