current bounds on the number of colors: 0 -- 210 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:35:24 2012 Optimize a model with 117495 rows, 23167 columns and 373905 nonzeros Presolve time: 0.40s Presolved: 117495 rows, 23167 columns, 373905 nonzeros Variable types: 0 continuous, 23167 integer (23167 binary) Root relaxation: objective 0.000000e+00, 571 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 (1020 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 13:35:26 2012 Optimize a model with 58294 rows, 12037 columns and 185172 nonzeros Presolve time: 0.18s Presolved: 58294 rows, 12037 columns, 185172 nonzeros Variable types: 0 continuous, 12037 integer (12037 binary) Root relaxation: objective 0.000000e+00, 674 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 (1467 simplex iterations) in 0.37 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% current bounds on the number of colors: 0 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:35:27 2012 Optimize a model with 29252 rows, 6577 columns and 92586 nonzeros Presolve time: 0.12s Presolved: 29252 rows, 6577 columns, 92586 nonzeros Variable types: 0 continuous, 6577 integer (6577 binary) Root relaxation: objective 0.000000e+00, 470 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 (857 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 13:35:28 2012 Optimize a model with 14731 rows, 3847 columns and 46293 nonzeros Presolve time: 0.05s Presolved: 14731 rows, 3847 columns, 46293 nonzeros Variable types: 0 continuous, 3847 integer (3847 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 (849 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 13:35:28 2012 Optimize a model with 6912 rows, 2377 columns and 21366 nonzeros Presolve time: 0.02s Presolved: 6912 rows, 2377 columns, 21366 nonzeros Variable types: 0 continuous, 2377 integer (2377 binary) Root relaxation: objective 0.000000e+00, 451 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 32 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4196 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:35:29 2012 Optimize a model with 3561 rows, 1747 columns and 10683 nonzeros Presolve time: 0.01s Presolved: 3561 rows, 1747 columns, 10683 nonzeros Variable types: 0 continuous, 1747 integer (1747 binary) Root relaxation: objective 0.000000e+00, 468 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 0 414 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5377 simplex iterations) in 0.81 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 13:35:29 2012 Optimize a model with 4678 rows, 1957 columns and 14244 nonzeros Presolve time: 0.01s Presolved: 4678 rows, 1957 columns, 14244 nonzeros Variable types: 0 continuous, 1957 integer (1957 binary) Root relaxation: objective 0.000000e+00, 462 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 0 406 - 0.00000 - - 0s 0 0 0.00000 0 463 - 0.00000 - - 1s 0 0 0.00000 0 566 - 0.00000 - - 1s 0 0 0.00000 0 426 - 0.00000 - - 2s 0 0 0.00000 0 378 - 0.00000 - - 3s 0 0 0.00000 0 391 - 0.00000 - - 4s 0 0 0.00000 0 395 - 0.00000 - - 5s 0 0 0.00000 0 388 - 0.00000 - - 5s 0 0 0.00000 0 380 - 0.00000 - - 6s 0 0 0.00000 0 370 - 0.00000 - - 7s 0 0 0.00000 0 370 - 0.00000 - - 8s 0 0 0.00000 0 362 - 0.00000 - - 9s 0 0 0.00000 0 367 - 0.00000 - - 10s 0 0 0.00000 0 365 - 0.00000 - - 10s 0 2 0.00000 0 365 - 0.00000 - - 11s 175 18 0.00000 13 475 - 0.00000 - 217 15s 473 32 0.00000 13 400 - 0.00000 - 191 20s 703 30 0.00000 6 463 - 0.00000 - 189 25s 705 32 0.00000 10 395 - 0.00000 - 188 31s 707 33 0.00000 13 368 - 0.00000 - 188 35s 710 35 0.00000 9 385 - 0.00000 - 187 43s 711 36 0.00000 4 369 - 0.00000 - 187 45s 713 37 0.00000 14 354 - 0.00000 - 186 50s 715 38 0.00000 6 356 - 0.00000 - 186 56s 722 43 0.00000 12 372 - 0.00000 - 298 60s 760 40 infeasible 17 - 0.00000 - 300 65s 878 21 infeasible 19 - 0.00000 - 300 70s 988 9 infeasible 19 - 0.00000 - 310 75s Cutting planes: Gomory: 1 Zero half: 28 Explored 1006 nodes (381908 simplex iterations) in 76.12 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 13:36:46 2012 Optimize a model with 5795 rows, 2167 columns and 17805 nonzeros Presolve time: 0.02s Presolved: 5795 rows, 2167 columns, 17805 nonzeros Variable types: 0 continuous, 2167 integer (2167 binary) Root relaxation: objective 0.000000e+00, 462 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 0 398 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 456 - 0.00000 - - 1s 0 0 0.00000 0 524 - 0.00000 - - 1s 0 0 0.00000 0 404 - 0.00000 - - 2s 0 0 0.00000 0 438 - 0.00000 - - 3s 0 0 0.00000 0 352 - 0.00000 - - 4s 0 0 0.00000 0 418 - 0.00000 - - 4s 0 0 0.00000 0 418 - 0.00000 - - 5s H 0 0 0.0000000 0.00000 0.0% - 5s Cutting planes: Clique: 3 Zero half: 18 Explored 0 nodes (34781 simplex iterations) in 5.38 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