current bounds on the number of colors: 0 -- 207 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:02:09 2012 Optimize a model with 117112 rows, 22456 columns and 372036 nonzeros Presolve time: 0.40s Presolved: 117112 rows, 22456 columns, 372036 nonzeros Variable types: 0 continuous, 22456 integer (22456 binary) Root relaxation: objective 0.000000e+00, 579 iterations, 0.16 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 (1031 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:02:12 2012 Optimize a model with 58092 rows, 11692 columns and 184212 nonzeros Presolve time: 0.17s Presolved: 58092 rows, 11692 columns, 184212 nonzeros Variable types: 0 continuous, 11692 integer (11692 binary) Root relaxation: objective 0.000000e+00, 689 iterations, 0.05 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 (1142 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 12:02:13 2012 Optimize a model with 28582 rows, 6310 columns and 90300 nonzeros Presolve time: 0.12s Presolved: 28582 rows, 6310 columns, 90300 nonzeros Variable types: 0 continuous, 6310 integer (6310 binary) Root relaxation: objective 0.000000e+00, 467 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 (869 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:02:13 2012 Optimize a model with 13827 rows, 3619 columns and 43344 nonzeros Presolve time: 0.04s Presolved: 13827 rows, 3619 columns, 43344 nonzeros Variable types: 0 continuous, 3619 integer (3619 binary) Root relaxation: objective 0.000000e+00, 424 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 (807 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:02:13 2012 Optimize a model with 7017 rows, 2377 columns and 21672 nonzeros Presolve time: 0.02s Presolved: 7017 rows, 2377 columns, 21672 nonzeros Variable types: 0 continuous, 2377 integer (2377 binary) Root relaxation: objective 0.000000e+00, 438 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 0 222 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3250 simplex iterations) in 0.22 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 12:02:14 2012 Optimize a model with 3612 rows, 1756 columns and 10836 nonzeros Presolve time: 0.01s Presolved: 3612 rows, 1756 columns, 10836 nonzeros Variable types: 0 continuous, 1756 integer (1756 binary) Root relaxation: objective 0.000000e+00, 450 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 0 414 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (6628 simplex iterations) in 1.03 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 12:02:15 2012 Optimize a model with 4747 rows, 1963 columns and 14448 nonzeros Presolve time: 0.01s Presolved: 4747 rows, 1963 columns, 14448 nonzeros Variable types: 0 continuous, 1963 integer (1963 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 0 400 - 0.00000 - - 0s 0 0 0.00000 0 400 - 0.00000 - - 0s 0 0 0.00000 0 394 - 0.00000 - - 1s 0 0 0.00000 0 480 - 0.00000 - - 1s 0 0 0.00000 0 372 - 0.00000 - - 3s 0 0 0.00000 0 372 - 0.00000 - - 3s 0 0 0.00000 0 372 - 0.00000 - - 4s 0 0 0.00000 0 372 - 0.00000 - - 5s 0 0 0.00000 0 372 - 0.00000 - - 6s 0 2 0.00000 0 372 - 0.00000 - - 7s 108 40 0.00000 15 469 - 0.00000 - 252 10s 343 82 infeasible 21 - 0.00000 - 218 15s 571 108 infeasible 23 - 0.00000 - 217 20s 704 123 0.00000 10 572 - 0.00000 - 212 25s 706 124 0.00000 17 378 - 0.00000 - 212 31s 708 126 0.00000 25 364 - 0.00000 - 211 37s 709 126 0.00000 31 364 - 0.00000 - 211 40s 711 128 0.00000 22 358 - 0.00000 - 210 45s 713 129 0.00000 17 387 - 0.00000 - 210 51s 758 129 infeasible 21 - 0.00000 - 312 55s 883 90 0.00000 19 474 - 0.00000 - 316 60s 980 55 infeasible 23 - 0.00000 - 327 65s 1077 24 infeasible 23 - 0.00000 - 335 70s 1175 12 infeasible 22 - 0.00000 - 341 75s 1273 14 0.00000 20 406 - 0.00000 - 347 80s 1397 14 infeasible 21 - 0.00000 - 348 85s 1498 17 0.00000 19 453 - 0.00000 - 353 90s 1598 17 0.00000 26 475 - 0.00000 - 357 95s 1701 2 infeasible 19 - 0.00000 - 361 100s Cutting planes: Zero half: 23 Explored 1748 nodes (673608 simplex iterations) in 102.75 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 12:03:58 2012 Optimize a model with 5882 rows, 2170 columns and 18060 nonzeros Presolve time: 0.02s Presolved: 5882 rows, 2170 columns, 18060 nonzeros Variable types: 0 continuous, 2170 integer (2170 binary) Root relaxation: objective 0.000000e+00, 445 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 0 402 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 492 - 0.00000 - - 1s 0 0 0.00000 0 473 - 0.00000 - - 2s 0 0 0.00000 0 505 - 0.00000 - - 2s 0 0 0.00000 0 503 - 0.00000 - - 3s * 0 0 0 0.0000000 0.00000 0.0% - 4s Cutting planes: Clique: 3 Zero half: 205 Explored 0 nodes (23450 simplex iterations) in 4.04 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