current bounds on the number of colors: 0 -- 209 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:07:44 2012 Optimize a model with 116273 rows, 22852 columns and 369928 nonzeros Presolve time: 0.40s Presolved: 116273 rows, 22852 columns, 369928 nonzeros Variable types: 0 continuous, 22852 integer (22852 binary) Root relaxation: objective 0.000000e+00, 538 iterations, 0.14 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 (985 simplex iterations) in 0.71 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:07:46 2012 Optimize a model with 58241 rows, 11984 columns and 184964 nonzeros Presolve time: 0.18s Presolved: 58241 rows, 11984 columns, 184964 nonzeros Variable types: 0 continuous, 11984 integer (11984 binary) Root relaxation: objective 0.000000e+00, 761 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 (1284 simplex iterations) in 0.32 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 13:07:47 2012 Optimize a model with 29225 rows, 6550 columns and 92482 nonzeros Presolve time: 0.12s Presolved: 29225 rows, 6550 columns, 92482 nonzeros Variable types: 0 continuous, 6550 integer (6550 binary) Root relaxation: objective 0.000000e+00, 520 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 (967 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 13:07:48 2012 Optimize a model with 14717 rows, 3833 columns and 46241 nonzeros Presolve time: 0.05s Presolved: 14717 rows, 3833 columns, 46241 nonzeros Variable types: 0 continuous, 3833 integer (3833 binary) Root relaxation: objective 0.000000e+00, 428 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 (803 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 13:07:48 2012 Optimize a model with 6905 rows, 2370 columns and 21342 nonzeros Presolve time: 0.02s Presolved: 6905 rows, 2370 columns, 21342 nonzeros Variable types: 0 continuous, 2370 integer (2370 binary) Root relaxation: objective 0.000000e+00, 457 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 0 138 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3032 simplex iterations) in 0.17 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 13:07:48 2012 Optimize a model with 3557 rows, 1743 columns and 10671 nonzeros Presolve time: 0.01s Presolved: 3557 rows, 1743 columns, 10671 nonzeros Variable types: 0 continuous, 1743 integer (1743 binary) Root relaxation: objective 0.000000e+00, 490 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 0 418 - 0.00000 - - 0s 0 0 0.00000 0 418 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5759 simplex iterations) in 0.89 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 13:07:49 2012 Optimize a model with 4673 rows, 1952 columns and 14228 nonzeros Presolve time: 0.01s Presolved: 4673 rows, 1952 columns, 14228 nonzeros Variable types: 0 continuous, 1952 integer (1952 binary) Root relaxation: objective 0.000000e+00, 460 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 0 412 - 0.00000 - - 0s 0 0 0.00000 0 410 - 0.00000 - - 0s 0 0 0.00000 0 392 - 0.00000 - - 1s 0 0 0.00000 0 491 - 0.00000 - - 1s 0 0 0.00000 0 388 - 0.00000 - - 2s 0 0 0.00000 0 392 - 0.00000 - - 3s 0 0 0.00000 0 390 - 0.00000 - - 4s 0 0 0.00000 0 390 - 0.00000 - - 5s 0 0 0.00000 0 388 - 0.00000 - - 5s 0 0 0.00000 0 382 - 0.00000 - - 6s 0 0 0.00000 0 372 - 0.00000 - - 7s 0 0 0.00000 0 372 - 0.00000 - - 8s 0 0 0.00000 0 370 - 0.00000 - - 9s 0 0 0.00000 0 372 - 0.00000 - - 9s 0 0 0.00000 0 372 - 0.00000 - - 10s 0 2 0.00000 0 372 - 0.00000 - - 11s 161 47 0.00000 18 384 - 0.00000 - 241 15s 445 50 0.00000 16 338 - 0.00000 - 206 20s 703 56 0.00000 7 392 - 0.00000 - 199 26s 705 58 0.00000 15 395 - 0.00000 - 199 31s 707 59 0.00000 7 362 - 0.00000 - 198 37s 708 60 0.00000 17 360 - 0.00000 - 198 40s 710 61 0.00000 12 346 - 0.00000 - 197 45s 713 63 0.00000 15 369 - 0.00000 - 196 52s 715 64 0.00000 15 367 - 0.00000 - 196 58s 716 65 0.00000 21 360 - 0.00000 - 196 61s 718 66 0.00000 15 417 - 0.00000 - 195 66s 725 69 0.00000 14 510 - 0.00000 - 337 70s 743 69 infeasible 23 - 0.00000 - 336 75s 826 40 0.00000 17 496 - 0.00000 - 340 80s Cutting planes: Clique: 1 Zero half: 21 Explored 885 nodes (372319 simplex iterations) in 83.00 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 13:09:13 2012 Optimize a model with 5789 rows, 2161 columns and 17785 nonzeros Presolve time: 0.02s Presolved: 5789 rows, 2161 columns, 17785 nonzeros Variable types: 0 continuous, 2161 integer (2161 binary) Root relaxation: objective 0.000000e+00, 473 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 0 382 - 0.00000 - - 0s 0 0 0.00000 0 370 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (11582 simplex iterations) in 1.47 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% optimal solution found: number of colors: 5