current bounds on the number of colors: 0 -- 211 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:57:37 2012 Optimize a model with 118756 rows, 23284 columns and 377790 nonzeros Presolve time: 0.41s Presolved: 118756 rows, 23284 columns, 377790 nonzeros Variable types: 0 continuous, 23284 integer (23284 binary) Root relaxation: objective 0.000000e+00, 541 iterations, 0.15 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 (1002 simplex iterations) in 0.72 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:57:39 2012 Optimize a model with 58919 rows, 12101 columns and 187096 nonzeros Presolve time: 0.18s Presolved: 58919 rows, 12101 columns, 187096 nonzeros Variable types: 0 continuous, 12101 integer (12101 binary) Root relaxation: objective 0.000000e+00, 763 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 (1278 simplex iterations) in 0.34 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:57:40 2012 Optimize a model with 29565 rows, 6615 columns and 93548 nonzeros Presolve time: 0.12s Presolved: 29565 rows, 6615 columns, 93548 nonzeros Variable types: 0 continuous, 6615 integer (6615 binary) Root relaxation: objective 0.000000e+00, 512 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 (942 simplex iterations) in 0.18 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:57:41 2012 Optimize a model with 14888 rows, 3872 columns and 46774 nonzeros Presolve time: 0.05s Presolved: 14888 rows, 3872 columns, 46774 nonzeros Variable types: 0 continuous, 3872 integer (3872 binary) Root relaxation: objective 0.000000e+00, 426 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 (844 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:57:41 2012 Optimize a model with 6985 rows, 2395 columns and 21588 nonzeros Presolve time: 0.02s Presolved: 6985 rows, 2395 columns, 21588 nonzeros Variable types: 0 continuous, 2395 integer (2395 binary) Root relaxation: objective 0.000000e+00, 471 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 (3165 simplex iterations) in 0.19 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 13:57:42 2012 Optimize a model with 3598 rows, 1762 columns and 10794 nonzeros Presolve time: 0.01s Presolved: 3598 rows, 1762 columns, 10794 nonzeros Variable types: 0 continuous, 1762 integer (1762 binary) Root relaxation: objective 0.000000e+00, 474 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 0 320 - 0.00000 - - 0s 0 0 0.00000 0 525 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (10957 simplex iterations) in 1.40 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 13:57:43 2012 Optimize a model with 4727 rows, 1973 columns and 14392 nonzeros Presolve time: 0.01s Presolved: 4727 rows, 1973 columns, 14392 nonzeros Variable types: 0 continuous, 1973 integer (1973 binary) Root relaxation: objective 0.000000e+00, 465 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 0 414 - 0.00000 - - 0s 0 0 0.00000 0 410 - 0.00000 - - 0s 0 0 0.00000 0 406 - 0.00000 - - 1s 0 0 0.00000 0 488 - 0.00000 - - 1s 0 0 0.00000 0 400 - 0.00000 - - 2s 0 0 0.00000 0 400 - 0.00000 - - 3s 0 0 0.00000 0 398 - 0.00000 - - 3s 0 0 0.00000 0 392 - 0.00000 - - 4s 0 0 0.00000 0 395 - 0.00000 - - 5s 0 0 0.00000 0 396 - 0.00000 - - 6s 0 0 0.00000 0 394 - 0.00000 - - 7s 0 0 0.00000 0 390 - 0.00000 - - 7s 0 0 0.00000 0 388 - 0.00000 - - 8s 0 0 0.00000 0 382 - 0.00000 - - 9s 0 0 0.00000 0 374 - 0.00000 - - 10s 0 0 0.00000 0 388 - 0.00000 - - 11s 0 0 0.00000 0 384 - 0.00000 - - 11s 0 2 0.00000 0 369 - 0.00000 - - 12s 72 28 0.00000 10 392 - 0.00000 - 287 15s 295 55 infeasible 13 - 0.00000 - 229 20s 528 68 infeasible 21 - 0.00000 - 223 25s 605 81 0.00000 13 396 - 0.00000 - 221 31s 607 82 0.00000 10 401 - 0.00000 - 220 36s 609 83 0.00000 14 383 - 0.00000 - 219 42s 610 84 0.00000 21 372 - 0.00000 - 219 45s 612 85 0.00000 12 380 - 0.00000 - 218 50s 614 87 0.00000 15 347 - 0.00000 - 218 55s 616 88 0.00000 14 320 - 0.00000 - 217 61s 620 91 infeasible 14 - 0.00000 - 376 65s 724 78 infeasible 24 - 0.00000 - 370 70s 855 29 infeasible 23 - 0.00000 - 367 75s 967 30 0.00000 21 507 - 0.00000 - 366 80s 1092 33 infeasible 22 - 0.00000 - 366 85s 1218 29 0.00000 25 459 - 0.00000 - 367 90s 1311 20 infeasible 24 - 0.00000 - 373 95s 1406 7 infeasible 22 - 0.00000 - 379 100s 1551 26 0.00000 19 396 - 0.00000 - 372 105s 1713 16 0.00000 24 424 - 0.00000 - 365 110s Cutting planes: Gomory: 1 Clique: 1 Zero half: 25 Explored 1782 nodes (737221 simplex iterations) in 113.94 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 13:59:37 2012 Optimize a model with 5856 rows, 2184 columns and 17990 nonzeros Presolve time: 0.02s Presolved: 5856 rows, 2184 columns, 17990 nonzeros Variable types: 0 continuous, 2184 integer (2184 binary) Root relaxation: objective 0.000000e+00, 465 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 0 388 - 0.00000 - - 0s 0 0 0.00000 0 378 - 0.00000 - - 0s 0 0 0.00000 0 496 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (11522 simplex iterations) in 1.37 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% optimal solution found: number of colors: 5