current bounds on the number of colors: 0 -- 215 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:27:38 2012 Optimize a model with 125298 rows, 24174 columns and 398254 nonzeros Presolve time: 0.43s Presolved: 125298 rows, 24174 columns, 398254 nonzeros Variable types: 0 continuous, 24174 integer (24174 binary) Root relaxation: objective 0.000000e+00, 575 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 (1027 simplex iterations) in 0.76 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 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:27:40 2012 Optimize a model with 62172 rows, 12564 columns and 197266 nonzeros Presolve time: 0.18s Presolved: 62172 rows, 12564 columns, 197266 nonzeros Variable types: 0 continuous, 12564 integer (12564 binary) Root relaxation: objective 0.000000e+00, 636 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 (1094 simplex iterations) in 0.31 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:27:41 2012 Optimize a model with 30609 rows, 6759 columns and 96772 nonzeros Presolve time: 0.13s Presolved: 30609 rows, 6759 columns, 96772 nonzeros Variable types: 0 continuous, 6759 integer (6759 binary) Root relaxation: objective 0.000000e+00, 460 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 (879 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 15:27:42 2012 Optimize a model with 15412 rows, 3964 columns and 48386 nonzeros Presolve time: 0.05s Presolved: 15412 rows, 3964 columns, 48386 nonzeros Variable types: 0 continuous, 3964 integer (3964 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (822 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 15:27:42 2012 Optimize a model with 7229 rows, 2459 columns and 22332 nonzeros Presolve time: 0.02s Presolved: 7229 rows, 2459 columns, 22332 nonzeros Variable types: 0 continuous, 2459 integer (2459 binary) Root relaxation: objective 0.000000e+00, 456 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 (2473 simplex iterations) in 0.13 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 15:27:42 2012 Optimize a model with 3722 rows, 1814 columns and 11166 nonzeros Presolve time: 0.01s Presolved: 3722 rows, 1814 columns, 11166 nonzeros Variable types: 0 continuous, 1814 integer (1814 binary) Root relaxation: objective 0.000000e+00, 516 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 0 426 - 0.00000 - - 0s 0 0 0.00000 0 426 - 0.00000 - - 0s 0 0 0.00000 0 587 - 0.00000 - - 1s 0 0 0.00000 0 595 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 2s Cutting planes: Zero half: 1599 Explored 0 nodes (9955 simplex iterations) in 2.03 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 15:27:44 2012 Optimize a model with 4891 rows, 2029 columns and 14888 nonzeros Presolve time: 0.01s Presolved: 4891 rows, 2029 columns, 14888 nonzeros Variable types: 0 continuous, 2029 integer (2029 binary) Root relaxation: objective 0.000000e+00, 459 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 0 426 - 0.00000 - - 0s 0 0 0.00000 0 420 - 0.00000 - - 0s 0 0 0.00000 0 404 - 0.00000 - - 1s 0 0 0.00000 0 416 - 0.00000 - - 1s 0 0 0.00000 0 406 - 0.00000 - - 2s 0 0 0.00000 0 386 - 0.00000 - - 3s 0 0 0.00000 0 398 - 0.00000 - - 4s 0 0 0.00000 0 378 - 0.00000 - - 5s 0 0 0.00000 0 380 - 0.00000 - - 5s 0 0 0.00000 0 374 - 0.00000 - - 6s 0 0 0.00000 0 374 - 0.00000 - - 7s 0 0 0.00000 0 389 - 0.00000 - - 8s 0 0 0.00000 0 372 - 0.00000 - - 8s 0 2 0.00000 0 372 - 0.00000 - - 9s 7 7 0.00000 5 529 - 0.00000 - 687 10s 337 47 0.00000 24 386 - 0.00000 - 166 15s 609 79 0.00000 8 404 - 0.00000 - 160 20s 612 81 0.00000 20 374 - 0.00000 - 159 26s 614 83 0.00000 16 371 - 0.00000 - 159 31s 616 84 0.00000 4 352 - 0.00000 - 158 37s 617 85 0.00000 3 354 - 0.00000 - 158 40s 621 89 0.00000 11 395 - 0.00000 - 264 45s 642 89 infeasible 19 - 0.00000 - 265 50s 762 47 infeasible 22 - 0.00000 - 272 55s 866 15 0.00000 21 441 - 0.00000 - 284 60s 997 21 0.00000 22 404 - 0.00000 - 289 65s 1127 17 infeasible 22 - 0.00000 - 298 70s 1257 5 0.00000 16 446 - 0.00000 - 303 75s 1382 6 infeasible 20 - 0.00000 - 306 80s Cutting planes: Gomory: 1 Clique: 1 Zero half: 19 Explored 1467 nodes (507729 simplex iterations) in 83.25 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 15:29:08 2012 Optimize a model with 6060 rows, 2244 columns and 18610 nonzeros Presolve time: 0.02s Presolved: 6060 rows, 2244 columns, 18610 nonzeros Variable types: 0 continuous, 2244 integer (2244 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 0 404 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 378 - 0.00000 - - 1s 0 0 0.00000 0 384 - 0.00000 - - 1s 0 0 0.00000 0 378 - 0.00000 - - 1s 0 0 0.00000 0 364 - 0.00000 - - 1s 0 0 0.00000 0 354 - 0.00000 - - 2s 0 0 0.00000 0 340 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 330 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 312 - 0.00000 - - 4s 0 0 0.00000 0 296 - 0.00000 - - 4s 0 0 0.00000 0 292 - 0.00000 - - 4s 0 0 0.00000 0 294 - 0.00000 - - 5s 0 0 0.00000 0 274 - 0.00000 - - 5s 0 0 0.00000 0 270 - 0.00000 - - 6s 0 0 0.00000 0 266 - 0.00000 - - 6s 0 0 0.00000 0 238 - 0.00000 - - 6s 0 0 0.00000 0 228 - 0.00000 - - 7s 0 0 0.00000 0 224 - 0.00000 - - 8s 0 0 0.00000 0 218 - 0.00000 - - 8s 0 0 0.00000 0 194 - 0.00000 - - 8s 0 0 0.00000 0 186 - 0.00000 - - 9s 0 0 0.00000 0 166 - 0.00000 - - 9s 0 0 0.00000 0 172 - 0.00000 - - 10s 0 0 0.00000 0 307 - 0.00000 - - 10s 0 0 0.00000 0 457 - 0.00000 - - 11s 0 0 0.00000 0 457 - 0.00000 - - 12s 0 2 0.00000 0 457 - 0.00000 - - 13s H 72 3 0.0000000 0.00000 0.0% 130 14s Cutting planes: Zero half: 16 Explored 72 nodes (109761 simplex iterations) in 14.85 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