current bounds on the number of colors: 0 -- 205 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:08:57 2012 Optimize a model with 107611 rows, 21963 columns and 343128 nonzeros Presolve time: 0.36s Presolved: 107611 rows, 21963 columns, 343128 nonzeros Variable types: 0 continuous, 21963 integer (21963 binary) Root relaxation: objective 0.000000e+00, 879 iterations, 0.11 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 (1344 simplex iterations) in 0.64 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 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:08:59 2012 Optimize a model with 53908 rows, 11508 columns and 171564 nonzeros Presolve time: 0.16s Presolved: 53908 rows, 11508 columns, 171564 nonzeros Variable types: 0 continuous, 11508 integer (11508 binary) Root relaxation: objective 0.000000e+00, 755 iterations, 0.06 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 (1263 simplex iterations) in 0.30 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:09:00 2012 Optimize a model with 26530 rows, 6178 columns and 84100 nonzeros Presolve time: 0.11s Presolved: 26530 rows, 6178 columns, 84100 nonzeros Variable types: 0 continuous, 6178 integer (6178 binary) Root relaxation: objective 0.000000e+00, 439 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 (861 simplex iterations) in 0.16 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:09:00 2012 Optimize a model with 12841 rows, 3513 columns and 40368 nonzeros Presolve time: 0.04s Presolved: 12841 rows, 3513 columns, 40368 nonzeros Variable types: 0 continuous, 3513 integer (3513 binary) Root relaxation: objective 0.000000e+00, 442 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 (860 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:09:01 2012 Optimize a model with 6523 rows, 2283 columns and 20184 nonzeros Presolve time: 0.02s Presolved: 6523 rows, 2283 columns, 20184 nonzeros Variable types: 0 continuous, 2283 integer (2283 binary) Root relaxation: objective 0.000000e+00, 441 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 (1914 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:09:01 2012 Optimize a model with 3364 rows, 1668 columns and 10092 nonzeros Presolve time: 0.01s Presolved: 3364 rows, 1668 columns, 10092 nonzeros Variable types: 0 continuous, 1668 integer (1668 binary) Root relaxation: objective 0.000000e+00, 453 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 0 410 - 0.00000 - - 0s 0 0 0.00000 0 406 - 0.00000 - - 0s 0 0 0.00000 0 573 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 27 Zero half: 1440 Explored 0 nodes (10103 simplex iterations) in 1.74 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 Sat Dec 15 11:09:03 2012 Optimize a model with 4417 rows, 1873 columns and 13456 nonzeros Presolve time: 0.01s Presolved: 4417 rows, 1873 columns, 13456 nonzeros Variable types: 0 continuous, 1873 integer (1873 binary) Root relaxation: objective 0.000000e+00, 454 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 0 392 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 1s 0 0 0.00000 0 478 - 0.00000 - - 1s 0 0 0.00000 0 368 - 0.00000 - - 2s 0 0 0.00000 0 366 - 0.00000 - - 3s 0 0 0.00000 0 362 - 0.00000 - - 3s 0 0 0.00000 0 344 - 0.00000 - - 4s 0 0 0.00000 0 365 - 0.00000 - - 5s 0 0 0.00000 0 340 - 0.00000 - - 5s 0 0 0.00000 0 352 - 0.00000 - - 6s 0 0 0.00000 0 329 - 0.00000 - - 7s 0 0 0.00000 0 334 - 0.00000 - - 7s 0 0 0.00000 0 334 - 0.00000 - - 8s 0 2 0.00000 0 334 - 0.00000 - - 9s 38 24 infeasible 19 - 0.00000 - 258 10s 447 80 0.00000 25 366 - 0.00000 - 166 15s 605 98 0.00000 23 374 - 0.00000 - 164 22s 607 99 0.00000 14 362 - 0.00000 - 164 25s 610 101 0.00000 23 391 - 0.00000 - 163 31s 612 102 0.00000 19 346 - 0.00000 - 162 36s 619 107 0.00000 12 431 - 0.00000 - 260 40s 781 97 infeasible 26 - 0.00000 - 268 45s 956 77 infeasible 23 - 0.00000 - 270 50s 1139 100 infeasible 29 - 0.00000 - 271 55s 1333 110 infeasible 25 - 0.00000 - 271 60s 1494 93 infeasible 30 - 0.00000 - 276 65s 1675 100 0.00000 22 377 - 0.00000 - 277 70s 1858 119 infeasible 27 - 0.00000 - 279 75s 2055 142 infeasible 27 - 0.00000 - 278 80s 2234 155 infeasible 27 - 0.00000 - 280 85s 2446 157 0.00000 24 390 - 0.00000 - 279 90s 2621 140 0.00000 25 401 - 0.00000 - 281 95s 2763 124 infeasible 26 - 0.00000 - 286 100s 2942 139 infeasible 28 - 0.00000 - 286 105s 3124 129 infeasible 27 - 0.00000 - 286 110s 3294 141 infeasible 27 - 0.00000 - 288 115s 3440 135 infeasible 26 - 0.00000 - 291 120s 3654 147 0.00000 23 370 - 0.00000 - 289 125s 3834 143 infeasible 28 - 0.00000 - 290 130s 3993 146 0.00000 24 376 - 0.00000 - 292 135s 4162 135 infeasible 26 - 0.00000 - 293 140s 4369 144 0.00000 26 384 - 0.00000 - 291 145s 4526 151 0.00000 28 436 - 0.00000 - 292 150s 4688 121 infeasible 26 - 0.00000 - 294 155s 4869 118 infeasible 27 - 0.00000 - 294 160s 5020 105 infeasible 25 - 0.00000 - 296 165s 5173 92 infeasible 26 - 0.00000 - 297 170s 5327 76 infeasible 22 - 0.00000 - 298 175s 5474 67 infeasible 22 - 0.00000 - 299 180s 5626 49 infeasible 30 - 0.00000 - 300 185s 5777 38 0.00000 25 380 - 0.00000 - 301 190s 5924 35 0.00000 26 372 - 0.00000 - 302 195s 6074 45 0.00000 26 378 - 0.00000 - 303 200s 6207 28 infeasible 23 - 0.00000 - 305 205s 6362 51 0.00000 20 358 - 0.00000 - 305 210s 6516 47 infeasible 31 - 0.00000 - 306 215s 6664 49 infeasible 27 - 0.00000 - 306 220s 6813 48 infeasible 21 - 0.00000 - 307 225s 6954 41 infeasible 27 - 0.00000 - 308 230s 7107 28 infeasible 21 - 0.00000 - 308 235s 7272 35 infeasible 24 - 0.00000 - 308 240s 7426 29 0.00000 22 438 - 0.00000 - 308 245s 7573 22 infeasible 22 - 0.00000 - 309 250s 7731 12 0.00000 19 502 - 0.00000 - 309 255s 7873 8 infeasible 22 - 0.00000 - 310 260s Cutting planes: Zero half: 14 Explored 7910 nodes (2514976 simplex iterations) in 261.52 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 Sat Dec 15 11:13:24 2012 Optimize a model with 5470 rows, 2078 columns and 16820 nonzeros Presolve time: 0.01s Presolved: 5470 rows, 2078 columns, 16820 nonzeros Variable types: 0 continuous, 2078 integer (2078 binary) Root relaxation: objective 0.000000e+00, 459 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 0 386 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2241 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% optimal solution found: number of colors: 5