current bounds on the number of colors: 0 -- 112 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:06 2012 Optimize a model with 34888 rows, 6893 columns and 110600 nonzeros Presolve time: 0.14s Presolved: 34888 rows, 6893 columns, 110600 nonzeros Variable types: 0 continuous, 6893 integer (6893 binary) Root relaxation: objective 0.000000e+00, 291 iterations, 0.04 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 (540 simplex iterations) in 0.23 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:07 2012 Optimize a model with 17500 rows, 3757 columns and 55300 nonzeros Presolve time: 0.07s Presolved: 17500 rows, 3757 columns, 55300 nonzeros Variable types: 0 continuous, 3757 integer (3757 binary) Root relaxation: objective 0.000000e+00, 275 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 (500 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:07 2012 Optimize a model with 8806 rows, 2189 columns and 27650 nonzeros Presolve time: 0.03s Presolved: 8806 rows, 2189 columns, 27650 nonzeros Variable types: 0 continuous, 2189 integer (2189 binary) Root relaxation: objective 0.000000e+00, 228 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 (460 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:07 2012 Optimize a model with 4459 rows, 1405 columns and 13825 nonzeros Presolve time: 0.01s Presolved: 4459 rows, 1405 columns, 13825 nonzeros Variable types: 0 continuous, 1405 integer (1405 binary) Root relaxation: objective 0.000000e+00, 233 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 (512 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:07 2012 Optimize a model with 1975 rows, 957 columns and 5925 nonzeros Presolve time: 0.00s Presolved: 1975 rows, 957 columns, 5925 nonzeros Variable types: 0 continuous, 957 integer (957 binary) Root relaxation: objective 0.000000e+00, 239 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 235 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3955 simplex iterations) in 0.38 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 20:09:08 2012 Optimize a model with 3217 rows, 1181 columns and 9875 nonzeros Presolve time: 0.01s Presolved: 3217 rows, 1181 columns, 9875 nonzeros Variable types: 0 continuous, 1181 integer (1181 binary) Root relaxation: objective 0.000000e+00, 245 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 0 216 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 0 0.00000 0 192 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 192 - 0.00000 - - 0s 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 0.00000 0 140 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 1 Zero half: 90 Explored 0 nodes (13525 simplex iterations) in 1.22 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 20:09:09 2012 Optimize a model with 2596 rows, 1069 columns and 7900 nonzeros Presolve time: 0.01s Presolved: 2596 rows, 1069 columns, 7900 nonzeros Variable types: 0 continuous, 1069 integer (1069 binary) Root relaxation: objective 0.000000e+00, 239 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 1s 0 0 0.00000 0 198 - 0.00000 - - 1s 0 0 0.00000 0 225 - 0.00000 - - 1s 0 0 0.00000 0 198 - 0.00000 - - 2s 0 0 0.00000 0 273 - 0.00000 - - 2s 0 0 0.00000 0 271 - 0.00000 - - 2s 0 2 0.00000 0 184 - 0.00000 - - 2s Cutting planes: Clique: 6 Zero half: 31 Explored 156 nodes (45618 simplex iterations) in 4.54 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5