current bounds on the number of colors: 0 -- 132 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:22 2012 Optimize a model with 59070 rows, 9605 columns and 185526 nonzeros Presolve time: 0.18s Presolved: 59070 rows, 9605 columns, 185526 nonzeros Variable types: 0 continuous, 9605 integer (9605 binary) Root relaxation: objective 0.000000e+00, 326 iterations, 0.07 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 (745 simplex iterations) in 0.37 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 -- 66 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:23 2012 Optimize a model with 29601 rows, 5249 columns and 92763 nonzeros Presolve time: 0.14s Presolved: 29601 rows, 5249 columns, 92763 nonzeros Variable types: 0 continuous, 5249 integer (5249 binary) Root relaxation: objective 0.000000e+00, 317 iterations, 0.03 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 (593 simplex iterations) in 0.20 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 -- 33 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:23 2012 Optimize a model with 14420 rows, 3005 columns and 44976 nonzeros Presolve time: 0.05s Presolved: 14420 rows, 3005 columns, 44976 nonzeros Variable types: 0 continuous, 3005 integer (3005 binary) Root relaxation: objective 0.000000e+00, 272 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 (553 simplex iterations) in 0.08 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:24 2012 Optimize a model with 7276 rows, 1949 columns and 22488 nonzeros Presolve time: 0.02s Presolved: 7276 rows, 1949 columns, 22488 nonzeros Variable types: 0 continuous, 1949 integer (1949 binary) Root relaxation: objective 0.000000e+00, 276 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 (1241 simplex iterations) in 0.07 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:24 2012 Optimize a model with 3704 rows, 1421 columns and 11244 nonzeros Presolve time: 0.01s Presolved: 3704 rows, 1421 columns, 11244 nonzeros Variable types: 0 continuous, 1421 integer (1421 binary) Root relaxation: objective 0.000000e+00, 298 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 408 - 0.00000 - - 1s 0 0 0.00000 0 429 - 0.00000 - - 2s 0 0 0.00000 0 421 - 0.00000 - - 3s 0 0 0.00000 0 418 - 0.00000 - - 4s 0 0 0.00000 0 407 - 0.00000 - - 5s 0 0 0.00000 0 396 - 0.00000 - - 7s 0 0 0.00000 0 387 - 0.00000 - - 7s 0 0 0.00000 0 392 - 0.00000 - - 8s 0 0 0.00000 0 389 - 0.00000 - - 10s 0 0 0.00000 0 386 - 0.00000 - - 10s 0 0 0.00000 0 398 - 0.00000 - - 11s 0 0 0.00000 0 398 - 0.00000 - - 11s 0 2 0.00000 0 398 - 0.00000 - - 13s Cutting planes: Clique: 17 Zero half: 19 Explored 7 nodes (52123 simplex iterations) in 13.39 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:37 2012 Optimize a model with 5490 rows, 1685 columns and 16866 nonzeros Presolve time: 0.01s Presolved: 5490 rows, 1685 columns, 16866 nonzeros Variable types: 0 continuous, 1685 integer (1685 binary) Root relaxation: objective 0.000000e+00, 284 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 132 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 3 Clique: 40 Zero half: 87 Explored 0 nodes (4031 simplex iterations) in 0.33 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 04:06:38 2012 Optimize a model with 4597 rows, 1553 columns and 14055 nonzeros Presolve time: 0.01s Presolved: 4597 rows, 1553 columns, 14055 nonzeros Variable types: 0 continuous, 1553 integer (1553 binary) Root relaxation: objective 0.000000e+00, 275 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 0 258 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 389 - 0.00000 - - 1s 0 0 0.00000 0 379 - 0.00000 - - 1s 0 0 0.00000 0 379 - 0.00000 - - 1s 0 0 0.00000 0 365 - 0.00000 - - 2s 0 0 0.00000 0 364 - 0.00000 - - 3s 0 0 0.00000 0 363 - 0.00000 - - 3s 0 0 0.00000 0 362 - 0.00000 - - 4s 0 0 0.00000 0 330 - 0.00000 - - 5s 0 0 0.00000 0 287 - 0.00000 - - 6s 0 0 0.00000 0 329 - 0.00000 - - 7s 0 0 0.00000 0 307 - 0.00000 - - 8s 0 0 0.00000 0 363 - 0.00000 - - 9s 0 0 0.00000 0 375 - 0.00000 - - 9s 0 0 0.00000 0 375 - 0.00000 - - 10s 0 2 0.00000 0 375 - 0.00000 - - 11s 374 15 0.00000 13 295 - 0.00000 - 125 15s 605 30 0.00000 2 369 - 0.00000 - 121 20s 610 33 0.00000 18 349 - 0.00000 - 120 26s 612 34 0.00000 8 276 - 0.00000 - 120 30s 615 36 0.00000 2 279 - 0.00000 - 119 35s 620 40 infeasible 15 - 0.00000 - 194 40s 656 48 infeasible 30 - 0.00000 - 197 45s 812 39 0.00000 24 324 - 0.00000 - 216 50s 973 54 infeasible 33 - 0.00000 - 232 55s 1145 58 infeasible 31 - 0.00000 - 242 60s 1328 63 infeasible 29 - 0.00000 - 249 65s 1477 70 0.00000 28 309 - 0.00000 - 257 70s 1630 55 infeasible 31 - 0.00000 - 265 75s 1786 77 infeasible 34 - 0.00000 - 269 80s 1927 68 0.00000 27 311 - 0.00000 - 276 85s 2119 86 infeasible 28 - 0.00000 - 276 90s 2322 85 infeasible 32 - 0.00000 - 276 95s 2516 75 infeasible 32 - 0.00000 - 278 100s 2698 85 infeasible 31 - 0.00000 - 278 105s 2881 82 0.00000 32 288 - 0.00000 - 280 110s 3077 102 0.00000 33 292 - 0.00000 - 281 115s 3291 108 0.00000 35 298 - 0.00000 - 281 120s 3479 106 0.00000 33 280 - 0.00000 - 282 125s 3692 95 infeasible 29 - 0.00000 - 282 130s 3878 91 0.00000 19 331 - 0.00000 - 283 135s 4058 119 infeasible 33 - 0.00000 - 284 140s 4246 127 infeasible 32 - 0.00000 - 285 145s 4421 146 infeasible 32 - 0.00000 - 286 150s 4587 156 0.00000 34 309 - 0.00000 - 287 155s 4748 161 0.00000 27 318 - 0.00000 - 289 160s 4906 161 infeasible 33 - 0.00000 - 290 165s 5090 157 infeasible 36 - 0.00000 - 291 170s 5279 190 0.00000 32 327 - 0.00000 - 291 175s 5448 211 0.00000 26 303 - 0.00000 - 292 180s 5596 213 infeasible 36 - 0.00000 - 294 185s 5769 216 0.00000 29 276 - 0.00000 - 294 190s 5939 212 0.00000 27 313 - 0.00000 - 295 195s 6091 204 infeasible 33 - 0.00000 - 297 200s 6252 201 0.00000 30 295 - 0.00000 - 298 205s 6434 205 infeasible 32 - 0.00000 - 298 210s 6588 199 0.00000 28 289 - 0.00000 - 299 215s 6728 187 0.00000 29 298 - 0.00000 - 301 220s 6903 186 infeasible 30 - 0.00000 - 302 225s 7084 187 infeasible 31 - 0.00000 - 302 230s 7307 202 infeasible 35 - 0.00000 - 300 235s 7517 206 infeasible 31 - 0.00000 - 300 240s 7709 214 infeasible 32 - 0.00000 - 300 245s 7906 217 infeasible 38 - 0.00000 - 300 250s 8085 208 0.00000 29 300 - 0.00000 - 300 255s 8265 210 infeasible 28 - 0.00000 - 300 260s 8434 213 infeasible 30 - 0.00000 - 301 265s 8601 210 infeasible 32 - 0.00000 - 301 270s 8786 217 0.00000 32 313 - 0.00000 - 302 275s 8966 219 0.00000 31 282 - 0.00000 - 302 280s Cutting planes: Clique: 2 Zero half: 13 Explored 9056 nodes (2785700 simplex iterations) in 282.80 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective -, best bound 0.000000000000e+00, gap - optimal solution found: number of colors: 6