current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:47 2012 Optimize a model with 39537 rows, 7032 columns and 124600 nonzeros Presolve time: 0.15s Presolved: 39537 rows, 7032 columns, 124600 nonzeros Variable types: 0 continuous, 7032 integer (7032 binary) Root relaxation: objective 0.000000e+00, 272 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 (516 simplex iterations) in 0.25 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 20:11:48 2012 Optimize a model with 19825 rows, 3868 columns and 62300 nonzeros Presolve time: 0.08s Presolved: 19825 rows, 3868 columns, 62300 nonzeros Variable types: 0 continuous, 3868 integer (3868 binary) Root relaxation: objective 0.000000e+00, 290 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 (543 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:48 2012 Optimize a model with 9969 rows, 2286 columns and 31150 nonzeros Presolve time: 0.03s Presolved: 9969 rows, 2286 columns, 31150 nonzeros Variable types: 0 continuous, 2286 integer (2286 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 (454 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 20:11:49 2012 Optimize a model with 5041 rows, 1495 columns and 15575 nonzeros Presolve time: 0.01s Presolved: 5041 rows, 1495 columns, 15575 nonzeros Variable types: 0 continuous, 1495 integer (1495 binary) Root relaxation: objective 0.000000e+00, 254 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 (896 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:49 2012 Optimize a model with 2225 rows, 1043 columns and 6675 nonzeros Presolve time: 0.01s Presolved: 2225 rows, 1043 columns, 6675 nonzeros Variable types: 0 continuous, 1043 integer (1043 binary) Root relaxation: objective 0.000000e+00, 248 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3313 simplex iterations) in 0.41 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 20:11:49 2012 Optimize a model with 3633 rows, 1269 columns and 11125 nonzeros Presolve time: 0.01s Presolved: 3633 rows, 1269 columns, 11125 nonzeros Variable types: 0 continuous, 1269 integer (1269 binary) Root relaxation: objective 0.000000e+00, 241 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 0.00000 0 305 - 0.00000 - - 0s 0 0 0.00000 0 199 - 0.00000 - - 1s 0 0 0.00000 0 193 - 0.00000 - - 1s 0 0 0.00000 0 205 - 0.00000 - - 1s 0 0 0.00000 0 194 - 0.00000 - - 2s 0 0 0.00000 0 202 - 0.00000 - - 2s 0 0 0.00000 0 201 - 0.00000 - - 3s 0 0 0.00000 0 202 - 0.00000 - - 3s 0 0 0.00000 0 202 - 0.00000 - - 3s 0 2 0.00000 0 202 - 0.00000 - - 4s 48 22 0.00000 10 186 - 0.00000 - 142 5s 607 188 0.00000 12 142 - 0.00000 - 84.4 10s 614 193 0.00000 29 164 - 0.00000 - 83.4 15s 792 169 0.00000 23 247 - 0.00000 - 149 20s 1148 101 0.00000 29 237 - 0.00000 - 161 25s 1563 132 infeasible 33 - 0.00000 - 167 30s 1986 123 infeasible 27 - 0.00000 - 171 35s 2417 188 infeasible 24 - 0.00000 - 171 40s 2816 177 infeasible 29 - 0.00000 - 174 45s 3264 189 0.00000 22 172 - 0.00000 - 175 50s 3652 183 infeasible 36 - 0.00000 - 177 55s 4037 176 0.00000 28 236 - 0.00000 - 180 60s 4461 158 0.00000 22 251 - 0.00000 - 181 65s 4848 163 0.00000 26 232 - 0.00000 - 183 70s 5273 208 0.00000 22 267 - 0.00000 - 183 75s 5728 219 infeasible 28 - 0.00000 - 183 80s 6189 236 infeasible 30 - 0.00000 - 183 85s 6622 231 0.00000 34 247 - 0.00000 - 183 90s 7059 246 0.00000 26 237 - 0.00000 - 183 95s * 7333 2 33 0.0000000 0.00000 0.0% 185 99s Cutting planes: Gomory: 1 Clique: 2 Zero half: 4 Explored 7334 nodes (1390098 simplex iterations) in 99.11 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:13:28 2012 Optimize a model with 2929 rows, 1156 columns and 8900 nonzeros Presolve time: 0.01s Presolved: 2929 rows, 1156 columns, 8900 nonzeros Variable types: 0 continuous, 1156 integer (1156 binary) Root relaxation: objective 0.000000e+00, 240 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 197 - 0.00000 - - 0s 0 0 0.00000 0 339 - 0.00000 - - 0s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 0 0.00000 0 334 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 331 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 324 - 0.00000 - - 4s 0 0 0.00000 0 323 - 0.00000 - - 4s 0 0 0.00000 0 319 - 0.00000 - - 5s 0 0 0.00000 0 336 - 0.00000 - - 5s 0 0 0.00000 0 344 - 0.00000 - - 6s 0 0 0.00000 0 333 - 0.00000 - - 6s 0 2 0.00000 0 333 - 0.00000 - - 6s Cutting planes: Clique: 15 Zero half: 15 Explored 15 nodes (38054 simplex iterations) in 7.27 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