current bounds on the number of colors: 0 -- 57
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:47 2012
Optimize a model with 4173 rows, 1743 columns and 13944 nonzeros
Presolve removed 2 rows and 56 columns
Presolve time: 0.02s
Presolved: 4171 rows, 1687 columns, 13888 nonzeros
Variable types: 0 continuous, 1687 integer (1687 binary)
Root relaxation: objective 0.000000e+00, 127 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 (208 simplex iterations) in 0.03 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 -- 28
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:47 2012
Optimize a model with 2115 rows, 945 columns and 6972 nonzeros
Presolve removed 2 rows and 28 columns
Presolve time: 0.01s
Presolved: 2113 rows, 917 columns, 6944 nonzeros
Variable types: 0 continuous, 917 integer (917 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 0.0000000 0.00000 0.0% - 0s
Explored 0 nodes (199 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 -- 14
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:47 2012
Optimize a model with 1086 rows, 546 columns and 3486 nonzeros
Presolve removed 2 rows and 14 columns
Presolve time: 0.00s
Presolved: 1084 rows, 532 columns, 3472 nonzeros
Variable types: 0 continuous, 532 integer (532 binary)
Root relaxation: objective 0.000000e+00, 121 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 (211 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 -- 7
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:47 2012
Optimize a model with 498 rows, 318 columns and 1494 nonzeros
Presolve removed 2 rows and 6 columns
Presolve time: 0.00s
Presolved: 496 rows, 312 columns, 1488 nonzeros
Variable types: 0 continuous, 312 integer (312 binary)
Root relaxation: objective 0.000000e+00, 135 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 98 - 0.00000 - - 0s
0 0 0.00000 0 112 - 0.00000 - - 0s
0 0 infeasible 0 - 0.10000 - - 0s
Explored 0 nodes (1062 simplex iterations) in 0.04 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: 3 -- 7
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:47 2012
Optimize a model with 792 rows, 432 columns and 2490 nonzeros
Presolve removed 2 rows and 10 columns
Presolve time: 0.00s
Presolved: 790 rows, 422 columns, 2480 nonzeros
Variable types: 0 continuous, 422 integer (422 binary)
Root relaxation: objective 0.000000e+00, 130 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 8 - 0.00000 - - 0s
H 0 0 0.0000000 0.00000 0.0% - 0s
Explored 0 nodes (353 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: 3 -- 5
Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:47 2012
Optimize a model with 645 rows, 375 columns and 1992 nonzeros
Presolve removed 2 rows and 8 columns
Presolve time: 0.00s
Presolved: 643 rows, 367 columns, 1984 nonzeros
Variable types: 0 continuous, 367 integer (367 binary)
Root relaxation: objective 0.000000e+00, 122 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 36 - 0.00000 - - 0s
H 0 0 0.0000000 0.00000 0.0% - 0s
Explored 0 nodes (495 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: 4