current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:29 2012 Optimize a model with 84037 rows, 18658 columns and 269310 nonzeros Presolve time: 0.27s Presolved: 84037 rows, 18658 columns, 269310 nonzeros Variable types: 0 continuous, 18658 integer (18658 binary) Root relaxation: objective 0.000000e+00, 718 iterations, 0.08 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 (1158 simplex iterations) in 0.47 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:30 2012 Optimize a model with 42113 rows, 9775 columns and 134655 nonzeros Presolve time: 0.15s Presolved: 42113 rows, 9775 columns, 134655 nonzeros Variable types: 0 continuous, 9775 integer (9775 binary) Root relaxation: objective 0.000000e+00, 544 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 (943 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:31 2012 Optimize a model with 20705 rows, 5239 columns and 65895 nonzeros Presolve time: 0.08s Presolved: 20705 rows, 5239 columns, 65895 nonzeros Variable types: 0 continuous, 5239 integer (5239 binary) Root relaxation: objective 0.000000e+00, 475 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 (1041 simplex iterations) in 0.14 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:32 2012 Optimize a model with 10001 rows, 2971 columns and 31515 nonzeros Presolve time: 0.03s Presolved: 10001 rows, 2971 columns, 31515 nonzeros Variable types: 0 continuous, 2971 integer (2971 binary) Root relaxation: objective 0.000000e+00, 395 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 (981 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:32 2012 Optimize a model with 4649 rows, 1837 columns and 14325 nonzeros Presolve time: 0.01s Presolved: 4649 rows, 1837 columns, 14325 nonzeros Variable types: 0 continuous, 1837 integer (1837 binary) Root relaxation: objective 0.000000e+00, 398 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 0 342 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 4 Clique: 124 Zero half: 387 Explored 0 nodes (4339 simplex iterations) in 0.35 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:32 2012 Optimize a model with 1973 rows, 1270 columns and 5730 nonzeros Presolve removed 189 rows and 189 columns Presolve time: 0.00s Presolved: 1784 rows, 1081 columns, 5352 nonzeros Variable types: 0 continuous, 1081 integer (1081 binary) Root relaxation: objective 0.000000e+00, 190 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 0 189 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (795 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:32 2012 Optimize a model with 2865 rows, 1459 columns and 8595 nonzeros Presolve time: 0.01s Presolved: 2865 rows, 1459 columns, 8595 nonzeros Variable types: 0 continuous, 1459 integer (1459 binary) Root relaxation: objective 0.000000e+00, 413 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 0 280 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 533 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 30 Zero half: 581 Explored 0 nodes (11026 simplex iterations) in 1.46 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:38:34 2012 Optimize a model with 3757 rows, 1648 columns and 11460 nonzeros Presolve time: 0.01s Presolved: 3757 rows, 1648 columns, 11460 nonzeros Variable types: 0 continuous, 1648 integer (1648 binary) Root relaxation: objective 0.000000e+00, 412 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 0 362 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 421 - 0.00000 - - 1s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 3s 0 0 0.00000 0 322 - 0.00000 - - 3s 0 0 0.00000 0 318 - 0.00000 - - 4s 0 0 0.00000 0 308 - 0.00000 - - 4s 0 0 0.00000 0 306 - 0.00000 - - 4s 0 0 0.00000 0 306 - 0.00000 - - 5s 0 0 0.00000 0 306 - 0.00000 - - 5s 0 2 0.00000 0 306 - 0.00000 - - 6s 598 62 0.00000 23 318 - 0.00000 - 115 10s 1111 69 0.00000 21 310 - 0.00000 - 108 17s 1113 70 0.00000 18 296 - 0.00000 - 108 20s 1117 73 0.00000 17 276 - 0.00000 - 108 26s 1216 101 0.00000 26 312 - 0.00000 - 154 30s 1511 127 infeasible 28 - 0.00000 - 169 35s 1819 191 infeasible 24 - 0.00000 - 179 40s 2142 224 0.00000 26 342 - 0.00000 - 186 45s 2451 241 0.00000 20 332 - 0.00000 - 192 50s 2747 265 infeasible 28 - 0.00000 - 197 55s 3099 323 0.00000 28 328 - 0.00000 - 199 60s 3409 351 infeasible 26 - 0.00000 - 202 65s 3730 360 0.00000 26 336 - 0.00000 - 204 70s 4037 363 infeasible 34 - 0.00000 - 206 75s 4318 352 infeasible 26 - 0.00000 - 209 80s 4606 348 infeasible 22 - 0.00000 - 212 85s 4902 328 infeasible 24 - 0.00000 - 214 90s 5186 330 infeasible 31 - 0.00000 - 216 95s 5485 323 infeasible 24 - 0.00000 - 218 100s 5770 336 0.00000 25 416 - 0.00000 - 219 105s 6022 320 0.00000 26 320 - 0.00000 - 221 110s 6339 311 0.00000 24 344 - 0.00000 - 221 115s 6616 322 0.00000 27 306 - 0.00000 - 223 120s 6907 323 infeasible 27 - 0.00000 - 223 125s 7216 318 0.00000 21 385 - 0.00000 - 224 130s 7558 332 infeasible 28 - 0.00000 - 223 135s 7907 327 infeasible 28 - 0.00000 - 223 140s 8182 310 infeasible 24 - 0.00000 - 224 145s 8489 299 infeasible 32 - 0.00000 - 224 150s 8795 283 0.00000 27 337 - 0.00000 - 225 155s 9134 306 0.00000 26 362 - 0.00000 - 224 160s 9490 294 infeasible 26 - 0.00000 - 223 165s 9816 286 infeasible 24 - 0.00000 - 224 170s 10148 268 0.00000 30 336 - 0.00000 - 224 175s 10471 251 infeasible 27 - 0.00000 - 224 180s 10798 238 infeasible 26 - 0.00000 - 224 185s 11083 223 infeasible 25 - 0.00000 - 224 190s 11390 226 0.00000 24 332 - 0.00000 - 225 195s 11692 228 infeasible 27 - 0.00000 - 225 200s 11983 221 infeasible 27 - 0.00000 - 225 205s 12283 221 infeasible 32 - 0.00000 - 226 210s 12565 215 infeasible 28 - 0.00000 - 226 215s 12873 205 0.00000 27 326 - 0.00000 - 227 220s 13198 196 0.00000 32 334 - 0.00000 - 226 225s 13473 165 infeasible 24 - 0.00000 - 227 230s 13760 158 infeasible 28 - 0.00000 - 227 235s 14055 151 0.00000 24 324 - 0.00000 - 227 240s 14311 129 0.00000 27 384 - 0.00000 - 228 245s 14565 121 infeasible 26 - 0.00000 - 228 250s 14796 104 0.00000 28 419 - 0.00000 - 229 255s 15075 105 infeasible 29 - 0.00000 - 229 260s 15363 95 infeasible 26 - 0.00000 - 229 265s 15715 97 0.00000 28 342 - 0.00000 - 229 270s 16000 94 infeasible 27 - 0.00000 - 229 275s 16261 93 0.00000 28 360 - 0.00000 - 230 280s 16512 84 0.00000 16 363 - 0.00000 - 230 285s 16825 84 infeasible 26 - 0.00000 - 230 290s Cutting planes: Zero half: 7 Explored 17032 nodes (3969358 simplex iterations) in 293.37 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: 5