current bounds on the number of colors: 0 -- 55
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:40:53 2012
Optimize a model with 20170 rows, 2230 columns and 61830 nonzeros
Presolve time: 0.08s
Presolved: 20170 rows, 2230 columns, 61830 nonzeros
Variable types: 0 continuous, 2230 integer (2230 binary)
Root relaxation: objective 0.000000e+00, 155 iterations, 0.02 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 (394 simplex iterations) in 0.13 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 -- 27
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:40:53 2012
Optimize a model with 9740 rows, 1460 columns and 29770 nonzeros
Presolve time: 0.03s
Presolved: 9740 rows, 1460 columns, 29770 nonzeros
Variable types: 0 continuous, 1460 integer (1460 binary)
Root relaxation: objective 0.000000e+00, 121 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 (1632 simplex iterations) in 0.15 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 -- 13
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:40:53 2012
Optimize a model with 4525 rows, 1075 columns and 13740 nonzeros
Presolve time: 0.01s
Presolved: 4525 rows, 1075 columns, 13740 nonzeros
Variable types: 0 continuous, 1075 integer (1075 binary)
Root relaxation: objective 0.000000e+00, 111 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 0.00000 0 62 - 0.00000 - - 0s
0 0 infeasible 0 - 0.10000 - - 0s
Explored 0 nodes (3537 simplex iterations) in 0.53 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 -- 13
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:40:54 2012
Optimize a model with 6760 rows, 1240 columns and 20610 nonzeros
Presolve time: 0.02s
Presolved: 6760 rows, 1240 columns, 20610 nonzeros
Variable types: 0 continuous, 1240 integer (1240 binary)
Root relaxation: objective 0.000000e+00, 123 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 48 - 0.00000 - - 0s
0 0 0.00000 0 32 - 0.00000 - - 0s
0 0 0.00000 0 202 - 0.00000 - - 1s
0 0 0.00000 0 252 - 0.00000 - - 1s
0 0 0.00000 0 189 - 0.00000 - - 2s
0 0 0.00000 0 217 - 0.00000 - - 3s
0 0 0.00000 0 257 - 0.00000 - - 4s
0 0 0.00000 0 275 - 0.00000 - - 5s
0 0 0.00000 0 274 - 0.00000 - - 6s
0 2 0.00000 0 274 - 0.00000 - - 7s
Cutting planes:
Clique: 99
Zero half: 4
Explored 37 nodes (43625 simplex iterations) in 7.97 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: 9 -- 13
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:41:02 2012
Optimize a model with 8250 rows, 1350 columns and 25190 nonzeros
Presolve time: 0.02s
Presolved: 8250 rows, 1350 columns, 25190 nonzeros
Variable types: 0 continuous, 1350 integer (1350 binary)
Root relaxation: objective 0.000000e+00, 125 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 26 - 0.00000 - - 0s
* 0 0 0 0.0000000 0.00000 0.0% - 0s
Cutting planes:
Gomory: 1
Clique: 19
MIR: 14
Zero half: 16
Explored 0 nodes (1715 simplex iterations) in 0.14 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: 9 -- 11
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:41:02 2012
Optimize a model with 7505 rows, 1295 columns and 22900 nonzeros
Presolve time: 0.02s
Presolved: 7505 rows, 1295 columns, 22900 nonzeros
Variable types: 0 continuous, 1295 integer (1295 binary)
Root relaxation: objective 0.000000e+00, 122 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 60 - 0.00000 - - 0s
0 0 0.00000 0 37 - 0.00000 - - 0s
0 0 0.00000 0 139 - 0.00000 - - 1s
0 0 0.00000 0 241 - 0.00000 - - 1s
0 0 0.00000 0 97 - 0.00000 - - 2s
0 0 0.00000 0 152 - 0.00000 - - 3s
0 0 0.00000 0 132 - 0.00000 - - 3s
0 0 0.00000 0 218 - 0.00000 - - 4s
0 0 0.00000 0 115 - 0.00000 - - 5s
0 0 0.00000 0 136 - 0.00000 - - 6s
0 0 0.00000 0 66 - 0.00000 - - 7s
0 0 0.00000 0 137 - 0.00000 - - 8s
0 0 0.00000 0 121 - 0.00000 - - 9s
0 2 0.00000 0 121 - 0.00000 - - 10s
506 28 infeasible 18 - 0.00000 - 81.9 15s
805 35 0.00000 23 129 - 0.00000 - 81.6 21s
809 37 0.00000 19 143 - 0.00000 - 81.2 26s
812 39 0.00000 19 153 - 0.00000 - 80.9 30s
900 29 0.00000 24 126 - 0.00000 - 131 35s
1312 20 0.00000 30 125 - 0.00000 - 132 40s
1743 17 infeasible 30 - 0.00000 - 135 45s
2205 23 infeasible 31 - 0.00000 - 135 50s
2679 23 0.00000 22 141 - 0.00000 - 134 55s
3112 12 infeasible 30 - 0.00000 - 135 60s
3525 21 0.00000 29 120 - 0.00000 - 137 65s
3938 18 0.00000 27 125 - 0.00000 - 138 70s
4416 8 0.00000 23 117 - 0.00000 - 137 75s
4891 7 0.00000 21 153 - 0.00000 - 137 80s
Cutting planes:
Gomory: 1
Clique: 40
Explored 5019 nodes (737670 simplex iterations) in 81.46 seconds
Thread count was 1 (of 16 available processors)
Model objective exceeds cutoff
Best objective -, best bound -, gap -
optimal solution found: number of colors: 11