current bounds on the number of colors: 0 -- 50
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:14:09 2012
Optimize a model with 15050 rows, 1850 columns and 46250 nonzeros
Presolve time: 0.06s
Presolved: 15050 rows, 1850 columns, 46250 nonzeros
Variable types: 0 continuous, 1850 integer (1850 binary)
Root relaxation: objective 0.000000e+00, 131 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 (485 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 -- 25
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:14:09 2012
Optimize a model with 7250 rows, 1200 columns and 22200 nonzeros
Presolve time: 0.02s
Presolved: 7250 rows, 1200 columns, 22200 nonzeros
Variable types: 0 continuous, 1200 integer (1200 binary)
Root relaxation: objective 0.000000e+00, 115 iterations, 0.01 seconds
Nodes | Current Node | Objective Bounds | Work
Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time
0 0 0.00000 0 10 - 0.00000 - - 0s
H 0 0 0.0000000 0.00000 0.0% - 0s
Explored 0 nodes (998 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%
current bounds on the number of colors: 0 -- 12
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:14:10 2012
Optimize a model with 3650 rows, 900 columns and 11100 nonzeros
Presolve time: 0.01s
Presolved: 3650 rows, 900 columns, 11100 nonzeros
Variable types: 0 continuous, 900 integer (900 binary)
Root relaxation: objective 0.000000e+00, 104 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 54 - 0.00000 - - 0s
0 0 0.00000 0 50 - 0.00000 - - 0s
0 0 infeasible 0 - 0.10000 - - 0s
Explored 0 nodes (2486 simplex iterations) in 0.25 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: 6 -- 12
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:14:10 2012
Optimize a model with 5450 rows, 1050 columns and 16650 nonzeros
Presolve time: 0.01s
Presolved: 5450 rows, 1050 columns, 16650 nonzeros
Variable types: 0 continuous, 1050 integer (1050 binary)
Root relaxation: objective 0.000000e+00, 115 iterations, 0.01 seconds
Nodes | Current Node | Objective Bounds | Work
Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time
0 0 0.00000 0 54 - 0.00000 - - 0s
0 0 0.00000 0 45 - 0.00000 - - 0s
0 0 0.00000 0 108 - 0.00000 - - 0s
0 0 0.00000 0 133 - 0.00000 - - 0s
0 0 0.00000 0 138 - 0.00000 - - 1s
0 0 0.00000 0 139 - 0.00000 - - 1s
0 0 0.00000 0 143 - 0.00000 - - 1s
0 0 0.00000 0 133 - 0.00000 - - 2s
0 2 0.00000 0 133 - 0.00000 - - 2s
536 20 0.00000 20 116 - 0.00000 - 74.3 5s
* 608 33 9 0.0000000 0.00000 0.0% 72.6 8s
Cutting planes:
Gomory: 19
Clique: 27
Zero half: 15
Explored 608 nodes (77114 simplex iterations) in 8.97 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: 6 -- 9
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:14:19 2012
Optimize a model with 4250 rows, 950 columns and 12950 nonzeros
Presolve time: 0.01s
Presolved: 4250 rows, 950 columns, 12950 nonzeros
Variable types: 0 continuous, 950 integer (950 binary)
Root relaxation: objective 0.000000e+00, 100 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 56 - 0.00000 - - 0s
0 0 0.00000 0 40 - 0.00000 - - 0s
0 0 0.00000 0 279 - 0.00000 - - 0s
0 0 0.00000 0 306 - 0.00000 - - 0s
0 0 0.00000 0 303 - 0.00000 - - 1s
0 0 0.00000 0 284 - 0.00000 - - 1s
0 0 0.00000 0 282 - 0.00000 - - 3s
0 0 0.00000 0 284 - 0.00000 - - 4s
0 0 0.00000 0 292 - 0.00000 - - 4s
0 0 0.00000 0 290 - 0.00000 - - 4s
0 2 0.00000 0 283 - 0.00000 - - 5s
Cutting planes:
Clique: 78
Zero half: 22
Explored 3 nodes (28367 simplex iterations) in 5.47 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: 7 -- 9
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:14:25 2012
Optimize a model with 4850 rows, 1000 columns and 14800 nonzeros
Presolve time: 0.01s
Presolved: 4850 rows, 1000 columns, 14800 nonzeros
Variable types: 0 continuous, 1000 integer (1000 binary)
Root relaxation: objective 0.000000e+00, 100 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 32 - 0.00000 - - 0s
0 0 0.00000 0 50 - 0.00000 - - 0s
0 0 0.00000 0 211 - 0.00000 - - 0s
0 0 0.00000 0 218 - 0.00000 - - 0s
0 0 0.00000 0 223 - 0.00000 - - 1s
0 0 0.00000 0 185 - 0.00000 - - 2s
0 0 0.00000 0 191 - 0.00000 - - 3s
0 0 0.00000 0 203 - 0.00000 - - 3s
0 0 0.00000 0 197 - 0.00000 - - 3s
0 2 0.00000 0 197 - 0.00000 - - 4s
Cutting planes:
Clique: 64
Zero half: 3
Explored 23 nodes (26426 simplex iterations) in 4.58 seconds
Thread count was 1 (of 16 available processors)
Model objective exceeds cutoff
Best objective -, best bound -, gap -
optimal solution found: number of colors: 9