current bounds on the number of colors: 0 -- 191 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:35:59 2012 Optimize a model with 84836 rows, 19036 columns and 272080 nonzeros Presolve time: 0.27s Presolved: 84836 rows, 19036 columns, 272080 nonzeros Variable types: 0 continuous, 19036 integer (19036 binary) Root relaxation: objective 0.000000e+00, 840 iterations, 0.10 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 (1309 simplex iterations) in 0.50 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:36:00 2012 Optimize a model with 42068 rows, 9868 columns and 134608 nonzeros Presolve time: 0.15s Presolved: 42068 rows, 9868 columns, 134608 nonzeros Variable types: 0 continuous, 9868 integer (9868 binary) Root relaxation: objective 0.000000e+00, 635 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 (1116 simplex iterations) in 0.26 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:36:01 2012 Optimize a model with 20684 rows, 5284 columns and 65872 nonzeros Presolve time: 0.08s Presolved: 20684 rows, 5284 columns, 65872 nonzeros Variable types: 0 continuous, 5284 integer (5284 binary) Root relaxation: objective 0.000000e+00, 401 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 (955 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:36:01 2012 Optimize a model with 9992 rows, 2992 columns and 31504 nonzeros Presolve time: 0.03s Presolved: 9992 rows, 2992 columns, 31504 nonzeros Variable types: 0 continuous, 2992 integer (2992 binary) Root relaxation: objective 0.000000e+00, 388 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 (719 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 05:36:02 2012 Optimize a model with 4646 rows, 1846 columns and 14320 nonzeros Presolve time: 0.01s Presolved: 4646 rows, 1846 columns, 14320 nonzeros Variable types: 0 continuous, 1846 integer (1846 binary) Root relaxation: objective 0.000000e+00, 453 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 0 350 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2037 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 05:36:02 2012 Optimize a model with 1973 rows, 1273 columns and 5728 nonzeros Presolve removed 191 rows and 191 columns Presolve time: 0.00s Presolved: 1782 rows, 1082 columns, 5346 nonzeros Variable types: 0 continuous, 1082 integer (1082 binary) Root relaxation: objective 0.000000e+00, 196 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 0 191 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (824 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 05:36:02 2012 Optimize a model with 2864 rows, 1464 columns and 8592 nonzeros Presolve time: 0.01s Presolved: 2864 rows, 1464 columns, 8592 nonzeros Variable types: 0 continuous, 1464 integer (1464 binary) Root relaxation: objective 0.000000e+00, 427 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 0 378 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5167 simplex iterations) in 0.61 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 05:36:03 2012 Optimize a model with 3755 rows, 1655 columns and 11456 nonzeros Presolve time: 0.01s Presolved: 3755 rows, 1655 columns, 11456 nonzeros Variable types: 0 continuous, 1655 integer (1655 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 0.00000 0 358 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 381 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 335 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 320 - 0.00000 - - 3s 0 0 0.00000 0 322 - 0.00000 - - 4s 0 0 0.00000 0 322 - 0.00000 - - 4s 0 2 0.00000 0 320 - 0.00000 - - 4s 8 8 0.00000 5 326 - 0.00000 - 388 5s 680 125 0.00000 14 344 - 0.00000 - 124 10s 707 133 0.00000 16 338 - 0.00000 - 124 16s 710 135 0.00000 15 319 - 0.00000 - 123 20s 753 144 0.00000 22 330 - 0.00000 - 191 25s 1033 100 infeasible 31 - 0.00000 - 201 30s 1322 72 infeasible 31 - 0.00000 - 206 35s 1614 77 0.00000 28 340 - 0.00000 - 209 40s 1907 90 0.00000 34 320 - 0.00000 - 210 45s 2149 70 infeasible 25 - 0.00000 - 217 50s 2392 61 0.00000 28 332 - 0.00000 - 222 55s 2626 81 infeasible 37 - 0.00000 - 226 60s 2863 54 0.00000 31 398 - 0.00000 - 230 65s 3116 41 infeasible 26 - 0.00000 - 232 70s 3409 38 infeasible 30 - 0.00000 - 231 75s 3708 31 infeasible 30 - 0.00000 - 230 80s 3980 25 0.00000 21 447 - 0.00000 - 230 85s 4258 23 infeasible 31 - 0.00000 - 230 90s 4507 20 0.00000 27 356 - 0.00000 - 231 95s 4774 29 infeasible 39 - 0.00000 - 232 100s 5000 3 infeasible 22 - 0.00000 - 234 105s Cutting planes: Clique: 1 Zero half: 14 Explored 5040 nodes (1220782 simplex iterations) in 106.18 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