current bounds on the number of colors: 0 -- 41
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:57 2012
Optimize a model with 1241 rows, 880 columns and 4420 nonzeros
Presolve removed 2 rows and 40 columns
Presolve time: 0.01s
Presolved: 1239 rows, 840 columns, 4380 nonzeros
Variable types: 0 continuous, 840 integer (840 binary)
Root relaxation: objective 0.000000e+00, 80 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 (80 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 Thu Dec 13 19:35:57 2012
Optimize a model with 641 rows, 470 columns and 2210 nonzeros
Presolve removed 2 rows and 20 columns
Presolve time: 0.00s
Presolved: 639 rows, 450 columns, 2190 nonzeros
Variable types: 0 continuous, 450 integer (450 binary)
Root relaxation: objective 0.000000e+00, 82 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 (123 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 Thu Dec 13 19:35:57 2012
Optimize a model with 341 rows, 265 columns and 1105 nonzeros
Presolve removed 2 rows and 10 columns
Presolve time: 0.00s
Presolved: 339 rows, 255 columns, 1095 nonzeros
Variable types: 0 continuous, 255 integer (255 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 0.0000000 0.00000 0.0% - 0s
Explored 0 nodes (151 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 Thu Dec 13 19:35:57 2012
Optimize a model with 161 rows, 142 columns and 442 nonzeros
Presolve removed 41 rows and 43 columns
Presolve time: 0.00s
Presolved: 120 rows, 99 columns, 360 nonzeros
Variable types: 0 continuous, 99 integer (99 binary)
Root relaxation: objective 0.000000e+00, 43 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 39 - 0.00000 - - 0s
0 0 infeasible 0 - 0.10000 - - 0s
Explored 0 nodes (136 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 Thu Dec 13 19:35:57 2012
Optimize a model with 221 rows, 183 columns and 663 nonzeros
Presolve removed 2 rows and 6 columns
Presolve time: 0.00s
Presolved: 219 rows, 177 columns, 657 nonzeros
Variable types: 0 continuous, 177 integer (177 binary)
Root relaxation: objective 0.000000e+00, 88 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 (143 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: 3