current bounds on the number of colors: 0 -- 145

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:13 2012

Optimize a model with 7489 rows, 10542 columns and 32472 nonzeros
Presolve removed 31 rows and 2232 columns
Presolve time: 0.10s
Presolved: 7458 rows, 8310 columns, 30240 nonzeros
Variable types: 0 continuous, 8310 integer (8310 binary)

Root relaxation: objective 0.000000e+00, 195 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 (195 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 -- 72

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:13 2012

Optimize a model with 3817 rows, 5322 columns and 16236 nonzeros
Presolve removed 31 rows and 1116 columns
Presolve time: 0.03s
Presolved: 3786 rows, 4206 columns, 15120 nonzeros
Variable types: 0 continuous, 4206 integer (4206 binary)

Root relaxation: objective 0.000000e+00, 194 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 (194 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 -- 36

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012

Optimize a model with 1981 rows, 2712 columns and 8118 nonzeros
Presolve removed 31 rows and 558 columns
Presolve time: 0.01s
Presolved: 1950 rows, 2154 columns, 7560 nonzeros
Variable types: 0 continuous, 2154 integer (2154 binary)

Root relaxation: objective 0.000000e+00, 195 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 (195 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 -- 18

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012

Optimize a model with 1063 rows, 1407 columns and 4059 nonzeros
Presolve removed 31 rows and 279 columns
Presolve time: 0.00s
Presolved: 1032 rows, 1128 columns, 3780 nonzeros
Variable types: 0 continuous, 1128 integer (1128 binary)

Root relaxation: objective 0.000000e+00, 187 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 (187 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 -- 9

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012

Optimize a model with 553 rows, 682 columns and 1804 nonzeros
Presolve removed 31 rows and 124 columns
Presolve time: 0.00s
Presolved: 522 rows, 558 columns, 1680 nonzeros
Variable types: 0 continuous, 558 integer (558 binary)

Root relaxation: objective 0.000000e+00, 164 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 (164 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 16:19:14 2012

Optimize a model with 349 rows, 392 columns and 902 nonzeros
Presolve removed 169 rows and 212 columns
Presolve time: 0.00s
Presolved: 180 rows, 180 columns, 540 nonzeros
Variable types: 0 continuous, 180 integer (180 binary)

Root relaxation: objective 0.000000e+00, 95 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   73          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (292 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 -- 4

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012

Optimize a model with 451 rows, 537 columns and 1353 nonzeros
Presolve removed 31 rows and 93 columns
Presolve time: 0.00s
Presolved: 420 rows, 444 columns, 1260 nonzeros
Variable types: 0 continuous, 444 integer (444 binary)

Root relaxation: objective 0.000000e+00, 169 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 (169 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