current bounds on the number of colors: 0 -- 183 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:51 2012 Optimize a model with 75713 rows, 17483 columns and 243243 nonzeros Presolve time: 0.24s Presolved: 75713 rows, 17483 columns, 243243 nonzeros Variable types: 0 continuous, 17483 integer (17483 binary) Root relaxation: objective 0.000000e+00, 723 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 (1123 simplex iterations) in 0.43 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:52 2012 Optimize a model with 37533 rows, 9065 columns and 120285 nonzeros Presolve time: 0.15s Presolved: 37533 rows, 9065 columns, 120285 nonzeros Variable types: 0 continuous, 9065 integer (9065 binary) Root relaxation: objective 0.000000e+00, 562 iterations, 0.03 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 (947 simplex iterations) in 0.23 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:53 2012 Optimize a model with 18443 rows, 4856 columns and 58806 nonzeros Presolve time: 0.07s Presolved: 18443 rows, 4856 columns, 58806 nonzeros Variable types: 0 continuous, 4856 integer (4856 binary) Root relaxation: objective 0.000000e+00, 378 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 (696 simplex iterations) in 0.11 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:53 2012 Optimize a model with 9313 rows, 2843 columns and 29403 nonzeros Presolve time: 0.03s Presolved: 9313 rows, 2843 columns, 29403 nonzeros Variable types: 0 continuous, 2843 integer (2843 binary) Root relaxation: objective 0.000000e+00, 393 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 (714 simplex iterations) in 0.05 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:53 2012 Optimize a model with 4333 rows, 1745 columns and 13365 nonzeros Presolve time: 0.01s Presolved: 4333 rows, 1745 columns, 13365 nonzeros Variable types: 0 continuous, 1745 integer (1745 binary) Root relaxation: objective 0.000000e+00, 409 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 0 258 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3096 simplex iterations) in 0.21 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:54 2012 Optimize a model with 1843 rows, 1196 columns and 5346 nonzeros Presolve removed 183 rows and 183 columns Presolve time: 0.00s Presolved: 1660 rows, 1013 columns, 4980 nonzeros Variable types: 0 continuous, 1013 integer (1013 binary) Root relaxation: objective 0.000000e+00, 191 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 183 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (793 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:54 2012 Optimize a model with 2673 rows, 1379 columns and 8019 nonzeros Presolve time: 0.01s Presolved: 2673 rows, 1379 columns, 8019 nonzeros Variable types: 0 continuous, 1379 integer (1379 binary) Root relaxation: objective 0.000000e+00, 414 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 0 360 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4768 simplex iterations) in 0.52 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:16:54 2012 Optimize a model with 3503 rows, 1562 columns and 10692 nonzeros Presolve time: 0.01s Presolved: 3503 rows, 1562 columns, 10692 nonzeros Variable types: 0 continuous, 1562 integer (1562 binary) Root relaxation: objective 0.000000e+00, 393 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 0 356 - 0.00000 - - 0s 0 0 0.00000 0 349 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 1s 0 0 0.00000 0 377 - 0.00000 - - 1s 0 0 0.00000 0 412 - 0.00000 - - 2s 0 0 0.00000 0 397 - 0.00000 - - 3s 0 0 0.00000 0 422 - 0.00000 - - 3s 0 0 0.00000 0 422 - 0.00000 - - 4s 0 2 0.00000 0 422 - 0.00000 - - 4s 6 4 0.00000 4 412 - 0.00000 - 649 5s 605 92 0.00000 13 336 - 0.00000 - 99.3 10s 609 94 0.00000 15 402 - 0.00000 - 98.6 16s 673 95 0.00000 25 314 - 0.00000 - 163 20s 962 19 0.00000 24 324 - 0.00000 - 190 25s 1307 30 infeasible 32 - 0.00000 - 197 30s 1653 46 infeasible 26 - 0.00000 - 203 35s 1990 45 infeasible 29 - 0.00000 - 209 40s 2324 31 0.00000 25 322 - 0.00000 - 212 45s 2606 25 0.00000 24 386 - 0.00000 - 218 50s 2881 26 0.00000 30 316 - 0.00000 - 224 55s 3181 20 infeasible 25 - 0.00000 - 226 60s 3488 27 infeasible 27 - 0.00000 - 227 65s 3769 12 0.00000 21 369 - 0.00000 - 230 70s 4065 14 0.00000 27 355 - 0.00000 - 231 75s 4381 18 infeasible 32 - 0.00000 - 230 80s 4699 12 0.00000 31 307 - 0.00000 - 230 85s 5030 25 infeasible 29 - 0.00000 - 231 90s 5323 12 infeasible 31 - 0.00000 - 232 95s Cutting planes: Gomory: 1 Zero half: 17 Explored 5426 nodes (1291366 simplex iterations) in 96.89 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5