current bounds on the number of colors: 0 -- 200 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:10:39 2012 Optimize a model with 102500 rows, 21023 columns and 326900 nonzeros Presolve time: 0.34s Presolved: 102500 rows, 21023 columns, 326900 nonzeros Variable types: 0 continuous, 21023 integer (21023 binary) Root relaxation: objective 0.000000e+00, 774 iterations, 0.08 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 (1228 simplex iterations) in 0.57 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 -- 100 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:10:40 2012 Optimize a model with 51350 rows, 11023 columns and 163450 nonzeros Presolve time: 0.17s Presolved: 51350 rows, 11023 columns, 163450 nonzeros Variable types: 0 continuous, 11023 integer (11023 binary) Root relaxation: objective 0.000000e+00, 690 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 (1129 simplex iterations) in 0.29 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:10:41 2012 Optimize a model with 25775 rows, 6023 columns and 81725 nonzeros Presolve time: 0.11s Presolved: 25775 rows, 6023 columns, 81725 nonzeros Variable types: 0 continuous, 6023 integer (6023 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (867 simplex iterations) in 0.15 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 09:10:42 2012 Optimize a model with 12476 rows, 3423 columns and 39228 nonzeros Presolve time: 0.04s Presolved: 12476 rows, 3423 columns, 39228 nonzeros Variable types: 0 continuous, 3423 integer (3423 binary) Root relaxation: objective 0.000000e+00, 420 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 (819 simplex iterations) in 0.07 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 09:10:42 2012 Optimize a model with 6338 rows, 2223 columns and 19614 nonzeros Presolve time: 0.02s Presolved: 6338 rows, 2223 columns, 19614 nonzeros Variable types: 0 continuous, 2223 integer (2223 binary) Root relaxation: objective 0.000000e+00, 432 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 (1461 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:10:42 2012 Optimize a model with 3269 rows, 1623 columns and 9807 nonzeros Presolve time: 0.01s Presolved: 3269 rows, 1623 columns, 9807 nonzeros Variable types: 0 continuous, 1623 integer (1623 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 0.00000 0 400 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5437 simplex iterations) in 0.84 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 09:10:43 2012 Optimize a model with 4292 rows, 1823 columns and 13076 nonzeros Presolve time: 0.01s Presolved: 4292 rows, 1823 columns, 13076 nonzeros Variable types: 0 continuous, 1823 integer (1823 binary) Root relaxation: objective 0.000000e+00, 441 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 0 390 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 1s 0 0 0.00000 0 536 - 0.00000 - - 1s 0 0 0.00000 0 340 - 0.00000 - - 2s 0 0 0.00000 0 363 - 0.00000 - - 2s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 340 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 5s 0 0 0.00000 0 324 - 0.00000 - - 6s 0 0 0.00000 0 328 - 0.00000 - - 6s 0 0 0.00000 0 328 - 0.00000 - - 7s 0 2 0.00000 0 328 - 0.00000 - - 8s 118 26 0.00000 19 348 - 0.00000 - 195 10s 513 59 0.00000 16 385 - 0.00000 - 165 15s 605 77 0.00000 18 356 - 0.00000 - 163 22s 607 78 0.00000 19 338 - 0.00000 - 163 25s 610 80 0.00000 17 320 - 0.00000 - 162 30s 613 82 0.00000 18 473 - 0.00000 - 161 37s 615 83 0.00000 13 311 - 0.00000 - 161 42s 616 84 0.00000 14 330 - 0.00000 - 161 45s 618 85 0.00000 3 431 - 0.00000 - 160 50s 627 89 0.00000 17 464 - 0.00000 - 309 55s 732 61 infeasible 26 - 0.00000 - 309 60s 858 17 infeasible 30 - 0.00000 - 320 65s 1012 18 infeasible 28 - 0.00000 - 319 70s 1173 19 0.00000 22 466 - 0.00000 - 317 75s 1316 16 0.00000 20 457 - 0.00000 - 322 80s 1460 4 infeasible 23 - 0.00000 - 325 85s Cutting planes: Clique: 1 Zero half: 4 Explored 1469 nodes (530599 simplex iterations) in 85.47 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 09:12:09 2012 Optimize a model with 5315 rows, 2023 columns and 16345 nonzeros Presolve time: 0.01s Presolved: 5315 rows, 2023 columns, 16345 nonzeros Variable types: 0 continuous, 2023 integer (2023 binary) Root relaxation: objective 0.000000e+00, 419 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 0 372 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2312 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% optimal solution found: number of colors: 5