current bounds on the number of colors: 0 -- 138 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 08:29:57 2012 Optimize a model with 66792 rows, 10488 columns and 209484 nonzeros Presolve time: 0.20s Presolved: 66792 rows, 10488 columns, 209484 nonzeros Variable types: 0 continuous, 10488 integer (10488 binary) Root relaxation: objective 0.000000e+00, 353 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 (671 simplex iterations) in 0.36 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 -- 69 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 08:29:58 2012 Optimize a model with 32982 rows, 5658 columns and 103224 nonzeros Presolve time: 0.15s Presolved: 32982 rows, 5658 columns, 103224 nonzeros Variable types: 0 continuous, 5658 integer (5658 binary) Root relaxation: objective 0.000000e+00, 417 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 (788 simplex iterations) in 0.24 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 -- 34 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 08:29:59 2012 Optimize a model with 16560 rows, 3312 columns and 51612 nonzeros Presolve time: 0.06s Presolved: 16560 rows, 3312 columns, 51612 nonzeros Variable types: 0 continuous, 3312 integer (3312 binary) Root relaxation: objective 0.000000e+00, 281 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 (578 simplex iterations) in 0.09 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 08:29:59 2012 Optimize a model with 7866 rows, 2070 columns and 24288 nonzeros Presolve time: 0.02s Presolved: 7866 rows, 2070 columns, 24288 nonzeros Variable types: 0 continuous, 2070 integer (2070 binary) Root relaxation: objective 0.000000e+00, 287 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 (1434 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 08:29:59 2012 Optimize a model with 4002 rows, 1518 columns and 12144 nonzeros Presolve time: 0.01s Presolved: 4002 rows, 1518 columns, 12144 nonzeros Variable types: 0 continuous, 1518 integer (1518 binary) Root relaxation: objective 0.000000e+00, 299 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 0 276 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 439 - 0.00000 - - 1s 0 0 0.00000 0 449 - 0.00000 - - 2s 0 0 0.00000 0 452 - 0.00000 - - 3s 0 0 0.00000 0 442 - 0.00000 - - 3s 0 0 0.00000 0 432 - 0.00000 - - 5s 0 0 0.00000 0 424 - 0.00000 - - 7s 0 0 0.00000 0 416 - 0.00000 - - 8s 0 0 0.00000 0 417 - 0.00000 - - 10s 0 0 0.00000 0 412 - 0.00000 - - 11s 0 0 0.00000 0 408 - 0.00000 - - 12s 0 0 0.00000 0 403 - 0.00000 - - 14s 0 0 0.00000 0 403 - 0.00000 - - 15s 0 0 0.00000 0 403 - 0.00000 - - 15s 0 2 0.00000 0 403 - 0.00000 - - 17s Cutting planes: Clique: 12 Zero half: 16 Explored 9 nodes (56812 simplex iterations) in 17.46 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 08:30:17 2012 Optimize a model with 5934 rows, 1794 columns and 18216 nonzeros Presolve time: 0.02s Presolved: 5934 rows, 1794 columns, 18216 nonzeros Variable types: 0 continuous, 1794 integer (1794 binary) Root relaxation: objective 0.000000e+00, 296 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 0 258 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 209 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 1s 0 0 0.00000 0 89 - 0.00000 - - 1s 0 0 0.00000 0 69 - 0.00000 - - 2s * 0 0 0 0.0000000 0.00000 0.0% - 2s Cutting planes: Clique: 3 Zero half: 49 Explored 0 nodes (21175 simplex iterations) in 2.55 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 08:30:19 2012 Optimize a model with 4968 rows, 1656 columns and 15180 nonzeros Presolve time: 0.01s Presolved: 4968 rows, 1656 columns, 15180 nonzeros Variable types: 0 continuous, 1656 integer (1656 binary) Root relaxation: objective 0.000000e+00, 288 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 0 268 - 0.00000 - - 0s 0 0 0.00000 0 272 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 1s 0 0 0.00000 0 354 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 276 - 0.00000 - - 3s 0 0 0.00000 0 308 - 0.00000 - - 4s 0 0 0.00000 0 374 - 0.00000 - - 5s 0 0 0.00000 0 337 - 0.00000 - - 6s 0 0 0.00000 0 294 - 0.00000 - - 7s 0 0 0.00000 0 280 - 0.00000 - - 7s 0 0 0.00000 0 305 - 0.00000 - - 8s 0 0 0.00000 0 305 - 0.00000 - - 9s 0 2 0.00000 0 305 - 0.00000 - - 10s 317 24 0.00000 18 307 - 0.00000 - 140 15s 603 43 0.00000 21 334 - 0.00000 - 139 20s 606 45 0.00000 11 264 - 0.00000 - 139 25s 609 47 0.00000 25 334 - 0.00000 - 138 30s 683 47 0.00000 24 334 - 0.00000 - 219 35s 821 56 infeasible 32 - 0.00000 - 237 40s 945 52 infeasible 27 - 0.00000 - 256 45s 1072 83 infeasible 25 - 0.00000 - 268 50s 1226 83 infeasible 27 - 0.00000 - 276 55s 1370 83 infeasible 28 - 0.00000 - 284 60s 1512 95 infeasible 29 - 0.00000 - 290 65s 1663 86 infeasible 22 - 0.00000 - 294 70s 1803 78 infeasible 26 - 0.00000 - 298 75s 1933 78 infeasible 28 - 0.00000 - 303 80s 2082 85 infeasible 34 - 0.00000 - 306 85s 2226 81 0.00000 18 359 - 0.00000 - 308 90s 2377 92 infeasible 27 - 0.00000 - 309 95s 2501 84 0.00000 25 339 - 0.00000 - 313 100s 2630 81 0.00000 30 307 - 0.00000 - 317 105s 2773 76 infeasible 23 - 0.00000 - 319 110s 2920 83 infeasible 34 - 0.00000 - 319 115s 3057 98 infeasible 32 - 0.00000 - 321 120s 3167 88 infeasible 26 - 0.00000 - 325 125s 3288 93 0.00000 27 299 - 0.00000 - 327 130s 3404 83 infeasible 23 - 0.00000 - 330 135s 3537 78 0.00000 19 341 - 0.00000 - 331 140s 3672 89 infeasible 29 - 0.00000 - 332 145s 3816 95 0.00000 25 320 - 0.00000 - 332 150s 3942 97 infeasible 26 - 0.00000 - 333 155s 4074 97 0.00000 23 308 - 0.00000 - 334 160s 4197 88 0.00000 27 336 - 0.00000 - 335 165s 4320 87 infeasible 28 - 0.00000 - 337 170s 4455 94 0.00000 24 236 - 0.00000 - 338 175s 4604 101 infeasible 30 - 0.00000 - 337 180s 4745 96 infeasible 28 - 0.00000 - 338 185s 4888 97 0.00000 24 238 - 0.00000 - 338 190s 5015 92 infeasible 28 - 0.00000 - 338 195s 5166 87 0.00000 26 295 - 0.00000 - 338 200s 5295 84 0.00000 25 335 - 0.00000 - 339 205s 5426 89 infeasible 27 - 0.00000 - 339 210s 5557 80 infeasible 22 - 0.00000 - 340 215s 5689 80 infeasible 25 - 0.00000 - 340 220s 5824 75 infeasible 29 - 0.00000 - 341 225s 5951 80 0.00000 27 321 - 0.00000 - 341 230s 6064 75 infeasible 27 - 0.00000 - 343 235s 6181 68 infeasible 32 - 0.00000 - 344 240s 6300 61 infeasible 26 - 0.00000 - 345 245s 6422 67 infeasible 28 - 0.00000 - 345 250s 6545 68 infeasible 29 - 0.00000 - 346 255s 6666 63 0.00000 23 333 - 0.00000 - 347 260s 6797 62 infeasible 25 - 0.00000 - 347 265s 6927 56 infeasible 24 - 0.00000 - 348 270s 7076 59 infeasible 25 - 0.00000 - 347 275s Cutting planes: Clique: 12 Zero half: 14 Explored 7111 nodes (2518537 simplex iterations) in 276.12 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