current bounds on the number of colors: 0 -- 50

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:21 2012

Optimize a model with 300 rows, 1260 columns and 2000 nonzeros
Presolve removed 32 rows and 800 columns
Presolve time: 0.00s
Presolved: 268 rows, 460 columns, 1200 nonzeros
Variable types: 0 continuous, 460 integer (460 binary)

Root relaxation: objective 0.000000e+00, 28 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 (28 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 -- 25

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:21 2012

Optimize a model with 170 rows, 610 columns and 960 nonzeros
Presolve removed 32 rows and 384 columns
Presolve time: 0.00s
Presolved: 138 rows, 226 columns, 576 nonzeros
Variable types: 0 continuous, 226 integer (226 binary)

Root relaxation: objective 0.000000e+00, 28 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 (28 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 -- 12

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:21 2012

Optimize a model with 110 rows, 310 columns and 480 nonzeros
Presolve removed 32 rows and 192 columns
Presolve time: 0.00s
Presolved: 78 rows, 118 columns, 288 nonzeros
Variable types: 0 continuous, 118 integer (118 binary)

Root relaxation: objective 0.000000e+00, 28 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 (28 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 -- 6

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:21 2012

Optimize a model with 80 rows, 160 columns and 240 nonzeros
Presolve removed 32 rows and 96 columns
Presolve time: 0.00s
Presolved: 48 rows, 64 columns, 144 nonzeros
Variable types: 0 continuous, 64 integer (64 binary)

Root relaxation: objective 0.000000e+00, 25 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 (25 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 -- 3

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:21 2012

Optimize a model with 60 rows, 60 columns and 80 nonzeros
Presolve removed 60 rows and 60 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 -


current bounds on the number of colors: 1 -- 3

Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:21 2012

Optimize a model with 70 rows, 110 columns and 160 nonzeros
Presolve removed 62 rows and 100 columns
Presolve time: 0.00s
Presolved: 8 rows, 10 columns, 24 nonzeros
Variable types: 0 continuous, 10 integer (10 binary)

Root relaxation: objective 0.000000e+00, 4 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 (4 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: 2