current bounds on the number of colors: 0 -- 107 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:58 2012 Optimize a model with 33550 rows, 6302 columns and 106000 nonzeros Presolve time: 0.15s Presolved: 33550 rows, 6302 columns, 106000 nonzeros Variable types: 0 continuous, 6302 integer (6302 binary) Root relaxation: objective 0.000000e+00, 252 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 (496 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 -- 53 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:58 2012 Optimize a model with 16513 rows, 3413 columns and 52000 nonzeros Presolve time: 0.07s Presolved: 16513 rows, 3413 columns, 52000 nonzeros Variable types: 0 continuous, 3413 integer (3413 binary) Root relaxation: objective 0.000000e+00, 246 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 (466 simplex iterations) in 0.10 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 -- 26 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:59 2012 Optimize a model with 8310 rows, 2022 columns and 26000 nonzeros Presolve time: 0.03s Presolved: 8310 rows, 2022 columns, 26000 nonzeros Variable types: 0 continuous, 2022 integer (2022 binary) Root relaxation: objective 0.000000e+00, 218 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 (433 simplex iterations) in 0.04 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 19:59:59 2012 Optimize a model with 3893 rows, 1273 columns and 12000 nonzeros Presolve time: 0.01s Presolved: 3893 rows, 1273 columns, 12000 nonzeros Variable types: 0 continuous, 1273 integer (1273 binary) Root relaxation: objective 0.000000e+00, 231 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 0 100 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2182 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:59 2012 Optimize a model with 2000 rows, 952 columns and 6000 nonzeros Presolve time: 0.00s Presolved: 2000 rows, 952 columns, 6000 nonzeros Variable types: 0 continuous, 952 integer (952 binary) Root relaxation: objective 0.000000e+00, 227 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3653 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:00:00 2012 Optimize a model with 2631 rows, 1059 columns and 8000 nonzeros Presolve time: 0.01s Presolved: 2631 rows, 1059 columns, 8000 nonzeros Variable types: 0 continuous, 1059 integer (1059 binary) Root relaxation: objective 0.000000e+00, 246 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 0 210 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 329 - 0.00000 - - 0s 0 0 0.00000 0 319 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s 0 0 0.00000 0 319 - 0.00000 - - 1s 0 0 0.00000 0 316 - 0.00000 - - 1s 0 0 0.00000 0 325 - 0.00000 - - 2s 0 0 0.00000 0 319 - 0.00000 - - 2s 0 0 0.00000 0 315 - 0.00000 - - 2s 0 0 0.00000 0 317 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 2 0.00000 0 316 - 0.00000 - - 5s Cutting planes: Clique: 19 Zero half: 24 Explored 29 nodes (31890 simplex iterations) in 5.92 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:00:06 2012 Optimize a model with 3262 rows, 1166 columns and 10000 nonzeros Presolve time: 0.01s Presolved: 3262 rows, 1166 columns, 10000 nonzeros Variable types: 0 continuous, 1166 integer (1166 binary) Root relaxation: objective 0.000000e+00, 229 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 0 116 - 0.00000 - - 0s 0 0 0.00000 0 177 - 0.00000 - - 0s 0 0 0.00000 0 261 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 2 0.00000 0 269 - 0.00000 - - 1s 704 74 0.00000 19 265 - 0.00000 - 68.5 5s 712 79 0.00000 23 207 - 0.00000 - 67.7 10s * 903 20 35 0.0000000 0.00000 0.0% 113 14s Cutting planes: Clique: 6 Zero half: 6 Explored 904 nodes (115875 simplex iterations) in 14.62 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: 5