current bounds on the number of colors: 0 -- 181 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:15:29 2012 Optimize a model with 80191 rows, 17179 columns and 256320 nonzeros Presolve time: 0.25s Presolved: 80191 rows, 17179 columns, 256320 nonzeros Variable types: 0 continuous, 17179 integer (17179 binary) Root relaxation: objective 0.000000e+00, 766 iterations, 0.09 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 (1201 simplex iterations) in 0.45 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 -- 90 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:15:30 2012 Optimize a model with 40186 rows, 9034 columns and 128160 nonzeros Presolve time: 0.16s Presolved: 40186 rows, 9034 columns, 128160 nonzeros Variable types: 0 continuous, 9034 integer (9034 binary) Root relaxation: objective 0.000000e+00, 614 iterations, 0.04 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 0.25 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 01:15:31 2012 Optimize a model with 19739 rows, 4871 columns and 62656 nonzeros Presolve time: 0.08s Presolved: 19739 rows, 4871 columns, 62656 nonzeros Variable types: 0 continuous, 4871 integer (4871 binary) Root relaxation: objective 0.000000e+00, 372 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 (697 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 01:15:32 2012 Optimize a model with 9960 rows, 2880 columns and 31328 nonzeros Presolve time: 0.03s Presolved: 9960 rows, 2880 columns, 31328 nonzeros Variable types: 0 continuous, 2880 integer (2880 binary) Root relaxation: objective 0.000000e+00, 387 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 (720 simplex iterations) in 0.06 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 01:15:32 2012 Optimize a model with 4626 rows, 1794 columns and 14240 nonzeros Presolve time: 0.01s Presolved: 4626 rows, 1794 columns, 14240 nonzeros Variable types: 0 continuous, 1794 integer (1794 binary) Root relaxation: objective 0.000000e+00, 382 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 0 348 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1734 simplex iterations) in 0.10 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 01:15:32 2012 Optimize a model with 1959 rows, 1251 columns and 5696 nonzeros Presolve removed 181 rows and 181 columns Presolve time: 0.00s Presolved: 1778 rows, 1070 columns, 5334 nonzeros Variable types: 0 continuous, 1070 integer (1070 binary) Root relaxation: objective 0.000000e+00, 187 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 0 181 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (777 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 01:15:32 2012 Optimize a model with 2848 rows, 1432 columns and 8544 nonzeros Presolve time: 0.01s Presolved: 2848 rows, 1432 columns, 8544 nonzeros Variable types: 0 continuous, 1432 integer (1432 binary) Root relaxation: objective 0.000000e+00, 400 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 0 290 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 0s 0 0 0.00000 0 481 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 12 Zero half: 1037 Explored 0 nodes (11238 simplex iterations) in 1.31 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 01:15:33 2012 Optimize a model with 3737 rows, 1613 columns and 11392 nonzeros Presolve time: 0.01s Presolved: 3737 rows, 1613 columns, 11392 nonzeros Variable types: 0 continuous, 1613 integer (1613 binary) Root relaxation: objective 0.000000e+00, 404 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 0 336 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 412 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 320 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 3s 0 0 0.00000 0 318 - 0.00000 - - 3s 0 0 0.00000 0 318 - 0.00000 - - 3s 0 2 0.00000 0 318 - 0.00000 - - 4s 33 25 0.00000 22 286 - 0.00000 - 226 5s 628 77 infeasible 15 - 0.00000 - 135 10s 707 107 0.00000 12 320 - 0.00000 - 133 16s 710 109 0.00000 14 314 - 0.00000 - 133 20s 714 112 0.00000 15 283 - 0.00000 - 132 26s 716 113 0.00000 14 315 - 0.00000 - 132 30s 743 119 infeasible 26 - 0.00000 - 241 35s 1056 54 0.00000 29 314 - 0.00000 - 234 40s 1374 43 infeasible 27 - 0.00000 - 231 45s 1680 27 infeasible 33 - 0.00000 - 231 50s 1985 26 infeasible 27 - 0.00000 - 230 55s 2292 35 0.00000 28 326 - 0.00000 - 228 60s 2583 44 0.00000 27 350 - 0.00000 - 228 65s 2857 42 infeasible 28 - 0.00000 - 229 70s 3144 29 infeasible 30 - 0.00000 - 229 75s 3386 21 infeasible 29 - 0.00000 - 232 80s 3670 5 infeasible 31 - 0.00000 - 231 85s Cutting planes: Zero half: 12 Explored 3816 nodes (919256 simplex iterations) in 88.10 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