current bounds on the number of colors: 0 -- 209 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 13:09:17 2012 Optimize a model with 115649 rows, 22846 columns and 368056 nonzeros Presolve time: 0.39s Presolved: 115649 rows, 22846 columns, 368056 nonzeros Variable types: 0 continuous, 22846 integer (22846 binary) Root relaxation: objective 0.000000e+00, 549 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 (990 simplex iterations) in 0.69 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 13:09:19 2012 Optimize a model with 57929 rows, 11978 columns and 184028 nonzeros Presolve time: 0.17s Presolved: 57929 rows, 11978 columns, 184028 nonzeros Variable types: 0 continuous, 11978 integer (11978 binary) Root relaxation: objective 0.000000e+00, 728 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 (1219 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 13:09:20 2012 Optimize a model with 29069 rows, 6544 columns and 92014 nonzeros Presolve time: 0.12s Presolved: 29069 rows, 6544 columns, 92014 nonzeros Variable types: 0 continuous, 6544 integer (6544 binary) Root relaxation: objective 0.000000e+00, 509 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 (949 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 13:09:20 2012 Optimize a model with 14639 rows, 3827 columns and 46007 nonzeros Presolve time: 0.05s Presolved: 14639 rows, 3827 columns, 46007 nonzeros Variable types: 0 continuous, 3827 integer (3827 binary) Root relaxation: objective 0.000000e+00, 434 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 (856 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 13:09:20 2012 Optimize a model with 6869 rows, 2364 columns and 21234 nonzeros Presolve time: 0.02s Presolved: 6869 rows, 2364 columns, 21234 nonzeros Variable types: 0 continuous, 2364 integer (2364 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2367 simplex iterations) in 0.14 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 13:09:21 2012 Optimize a model with 3539 rows, 1737 columns and 10617 nonzeros Presolve time: 0.01s Presolved: 3539 rows, 1737 columns, 10617 nonzeros Variable types: 0 continuous, 1737 integer (1737 binary) Root relaxation: objective 0.000000e+00, 479 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 (5556 simplex iterations) in 0.83 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 13:09:22 2012 Optimize a model with 4649 rows, 1946 columns and 14156 nonzeros Presolve time: 0.01s Presolved: 4649 rows, 1946 columns, 14156 nonzeros Variable types: 0 continuous, 1946 integer (1946 binary) Root relaxation: objective 0.000000e+00, 461 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 0 396 - 0.00000 - - 0s 0 0 0.00000 0 406 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 1s 0 0 0.00000 0 513 - 0.00000 - - 1s 0 0 0.00000 0 372 - 0.00000 - - 2s 0 0 0.00000 0 374 - 0.00000 - - 3s 0 0 0.00000 0 370 - 0.00000 - - 4s 0 0 0.00000 0 364 - 0.00000 - - 5s 0 0 0.00000 0 368 - 0.00000 - - 6s 0 0 0.00000 0 364 - 0.00000 - - 6s 0 0 0.00000 0 346 - 0.00000 - - 7s 0 0 0.00000 0 346 - 0.00000 - - 8s 0 0 0.00000 0 346 - 0.00000 - - 8s 0 2 0.00000 0 346 - 0.00000 - - 10s 181 19 infeasible 13 - 0.00000 - 280 15s 428 23 0.00000 11 386 - 0.00000 - 246 20s 603 34 0.00000 8 382 - 0.00000 - 245 25s 605 36 0.00000 10 380 - 0.00000 - 244 30s 608 38 0.00000 7 348 - 0.00000 - 243 37s 609 38 0.00000 8 349 - 0.00000 - 243 40s 611 40 0.00000 13 336 - 0.00000 - 242 46s 612 40 0.00000 5 345 - 0.00000 - 241 50s 616 43 infeasible 16 - 0.00000 - 359 55s 750 17 0.00000 26 402 - 0.00000 - 357 60s 850 15 infeasible 22 - 0.00000 - 369 65s 975 6 0.00000 20 392 - 0.00000 - 370 70s Cutting planes: Zero half: 10 Explored 1002 nodes (430118 simplex iterations) in 71.35 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 13:10:33 2012 Optimize a model with 5759 rows, 2155 columns and 17695 nonzeros Presolve time: 0.02s Presolved: 5759 rows, 2155 columns, 17695 nonzeros Variable types: 0 continuous, 2155 integer (2155 binary) Root relaxation: objective 0.000000e+00, 452 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 0 410 - 0.00000 - - 0s 0 0 0.00000 0 378 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 1s 0 0 0.00000 0 390 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Gomory: 1 Clique: 1 Zero half: 253 Explored 0 nodes (13018 simplex iterations) in 1.46 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