current bounds on the number of colors: 0 -- 81

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

Optimize a model with 1521 rows, 3276 columns and 7560 nonzeros
Presolve removed 33 rows and 1320 columns
Presolve time: 0.02s
Presolved: 1488 rows, 1956 columns, 6240 nonzeros
Variable types: 0 continuous, 1956 integer (1956 binary)

Root relaxation: objective 0.000000e+00, 79 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 (79 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 -- 40

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

Optimize a model with 801 rows, 1656 columns and 3780 nonzeros
Presolve removed 33 rows and 660 columns
Presolve time: 0.01s
Presolved: 768 rows, 996 columns, 3120 nonzeros
Variable types: 0 continuous, 996 integer (996 binary)

Root relaxation: objective 0.000000e+00, 79 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 (79 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 -- 20

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

Optimize a model with 441 rows, 846 columns and 1890 nonzeros
Presolve removed 33 rows and 330 columns
Presolve time: 0.00s
Presolved: 408 rows, 516 columns, 1560 nonzeros
Variable types: 0 continuous, 516 integer (516 binary)

Root relaxation: objective 0.000000e+00, 75 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 (75 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 -- 10

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

Optimize a model with 261 rows, 441 columns and 945 nonzeros
Presolve removed 33 rows and 165 columns
Presolve time: 0.00s
Presolved: 228 rows, 276 columns, 780 nonzeros
Variable types: 0 continuous, 276 integer (276 binary)

Root relaxation: objective 0.000000e+00, 70 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 (70 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 16:14:16 2012

Optimize a model with 153 rows, 198 columns and 378 nonzeros
Presolve removed 93 rows and 132 columns
Presolve time: 0.00s
Presolved: 60 rows, 66 columns, 180 nonzeros
Variable types: 0 continuous, 66 integer (66 binary)

Root relaxation: objective 0.000000e+00, 27 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 (27 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 16:14:16 2012

Optimize a model with 117 rows, 117 columns and 189 nonzeros
Presolve removed 117 rows and 117 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