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

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:21:40 2012

Optimize a model with 6161 rows, 3392 columns and 21480 nonzeros
Presolve removed 3 rows and 120 columns
Presolve time: 0.04s
Presolved: 6158 rows, 3272 columns, 21360 nonzeros
Variable types: 0 continuous, 3272 integer (3272 binary)

Root relaxation: objective 0.000000e+00, 175 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 (268 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 Fri Dec 14 18:21:40 2012

Optimize a model with 3121 rows, 1772 columns and 10740 nonzeros
Presolve removed 3 rows and 60 columns
Presolve time: 0.01s
Presolved: 3118 rows, 1712 columns, 10680 nonzeros
Variable types: 0 continuous, 1712 integer (1712 binary)

Root relaxation: objective 0.000000e+00, 166 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 (166 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 Fri Dec 14 18:21:40 2012

Optimize a model with 1601 rows, 962 columns and 5370 nonzeros
Presolve removed 3 rows and 30 columns
Presolve time: 0.01s
Presolved: 1598 rows, 932 columns, 5340 nonzeros
Variable types: 0 continuous, 932 integer (932 binary)

Root relaxation: objective 0.000000e+00, 168 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 (271 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 Fri Dec 14 18:21:41 2012

Optimize a model with 841 rows, 557 columns and 2685 nonzeros
Presolve removed 3 rows and 15 columns
Presolve time: 0.00s
Presolved: 838 rows, 542 columns, 2670 nonzeros
Variable types: 0 continuous, 542 integer (542 binary)

Root relaxation: objective 0.000000e+00, 183 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 (283 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 -- 5

Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:21:41 2012

Optimize a model with 385 rows, 314 columns and 1074 nonzeros
Presolve removed 81 rows and 84 columns
Presolve time: 0.00s
Presolved: 304 rows, 230 columns, 912 nonzeros
Variable types: 0 continuous, 230 integer (230 binary)

Root relaxation: objective 0.000000e+00, 86 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   78          -    0.00000     -      -    0s
     0     0 infeasible    0               -    0.10000     -      -    0s

Explored 0 nodes (312 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 Fri Dec 14 18:21:41 2012

Optimize a model with 537 rows, 395 columns and 1611 nonzeros
Presolve removed 3 rows and 9 columns
Presolve time: 0.00s
Presolved: 534 rows, 386 columns, 1602 nonzeros
Variable types: 0 continuous, 386 integer (386 binary)

Root relaxation: objective 0.000000e+00, 177 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  122          -    0.00000     -      -    0s
H    0     0                       0.0000000    0.00000   0.0%     -    0s

Explored 0 nodes (519 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%


optimal solution found: number of colors: 3