current bounds on the number of colors: 0 -- 187 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:59:08 2012 Optimize a model with 80725 rows, 18257 columns and 259005 nonzeros Presolve time: 0.25s Presolved: 80725 rows, 18257 columns, 259005 nonzeros Variable types: 0 continuous, 18257 integer (18257 binary) Root relaxation: objective 0.000000e+00, 716 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 (1163 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:59:10 2012 Optimize a model with 40023 rows, 9468 columns and 128110 nonzeros Presolve time: 0.16s Presolved: 40023 rows, 9468 columns, 128110 nonzeros Variable types: 0 continuous, 9468 integer (9468 binary) Root relaxation: objective 0.000000e+00, 504 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 (910 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:59:11 2012 Optimize a model with 20105 rows, 5167 columns and 64055 nonzeros Presolve time: 0.08s Presolved: 20105 rows, 5167 columns, 64055 nonzeros Variable types: 0 continuous, 5167 integer (5167 binary) Root relaxation: objective 0.000000e+00, 422 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 (774 simplex iterations) in 0.12 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 03:59:11 2012 Optimize a model with 9713 rows, 2923 columns and 30635 nonzeros Presolve time: 0.03s Presolved: 9713 rows, 2923 columns, 30635 nonzeros Variable types: 0 continuous, 2923 integer (2923 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 (731 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 03:59:11 2012 Optimize a model with 4517 rows, 1801 columns and 13925 nonzeros Presolve time: 0.01s Presolved: 4517 rows, 1801 columns, 13925 nonzeros Variable types: 0 continuous, 1801 integer (1801 binary) Root relaxation: objective 0.000000e+00, 415 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 0 354 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2028 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 03:59:11 2012 Optimize a model with 1919 rows, 1240 columns and 5570 nonzeros Presolve removed 187 rows and 187 columns Presolve time: 0.00s Presolved: 1732 rows, 1053 columns, 5196 nonzeros Variable types: 0 continuous, 1053 integer (1053 binary) Root relaxation: objective 0.000000e+00, 198 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 0 187 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (820 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 03:59:11 2012 Optimize a model with 2785 rows, 1427 columns and 8355 nonzeros Presolve time: 0.01s Presolved: 2785 rows, 1427 columns, 8355 nonzeros Variable types: 0 continuous, 1427 integer (1427 binary) Root relaxation: objective 0.000000e+00, 437 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 0 368 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5288 simplex iterations) in 0.63 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 03:59:12 2012 Optimize a model with 3651 rows, 1614 columns and 11140 nonzeros Presolve time: 0.01s Presolved: 3651 rows, 1614 columns, 11140 nonzeros Variable types: 0 continuous, 1614 integer (1614 binary) Root relaxation: objective 0.000000e+00, 423 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 0 366 - 0.00000 - - 0s 0 0 0.00000 0 354 - 0.00000 - - 0s 0 0 0.00000 0 354 - 0.00000 - - 0s 0 0 0.00000 0 437 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 1s 0 0 0.00000 0 336 - 0.00000 - - 2s 0 0 0.00000 0 338 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 2 0.00000 0 332 - 0.00000 - - 4s 89 26 0.00000 20 266 - 0.00000 - 161 5s 704 36 0.00000 7 479 - 0.00000 - 123 10s 708 39 0.00000 17 314 - 0.00000 - 122 15s 712 41 0.00000 20 284 - 0.00000 - 121 20s 716 44 0.00000 4 416 - 0.00000 - 121 25s 906 34 0.00000 29 334 - 0.00000 - 204 30s 1243 49 infeasible 26 - 0.00000 - 207 35s 1606 70 infeasible 31 - 0.00000 - 207 40s 2008 66 0.00000 24 292 - 0.00000 - 204 45s 2372 72 infeasible 24 - 0.00000 - 203 50s 2654 94 infeasible 23 - 0.00000 - 208 55s 2986 89 infeasible 29 - 0.00000 - 209 60s 3314 79 infeasible 26 - 0.00000 - 210 65s 3633 60 infeasible 26 - 0.00000 - 211 70s 3954 49 infeasible 24 - 0.00000 - 212 75s 4271 42 0.00000 23 330 - 0.00000 - 212 80s 4581 38 0.00000 21 401 - 0.00000 - 213 85s 4978 53 0.00000 26 403 - 0.00000 - 211 90s 5300 63 infeasible 30 - 0.00000 - 212 95s 5583 64 0.00000 22 386 - 0.00000 - 214 100s 5984 71 infeasible 32 - 0.00000 - 213 105s 6340 89 infeasible 31 - 0.00000 - 212 110s 6658 91 infeasible 26 - 0.00000 - 213 115s 6957 98 0.00000 29 335 - 0.00000 - 215 120s 7253 108 0.00000 25 326 - 0.00000 - 216 125s 7515 88 infeasible 29 - 0.00000 - 218 130s 7846 109 infeasible 33 - 0.00000 - 218 135s 8161 90 0.00000 26 332 - 0.00000 - 218 140s 8481 84 infeasible 24 - 0.00000 - 218 145s 8784 63 infeasible 24 - 0.00000 - 219 150s 9068 53 0.00000 21 423 - 0.00000 - 220 155s 9413 48 0.00000 37 324 - 0.00000 - 219 160s 9761 34 infeasible 28 - 0.00000 - 219 165s 10050 7 infeasible 32 - 0.00000 - 220 170s Cutting planes: Gomory: 1 Zero half: 10 Explored 10120 nodes (2259500 simplex iterations) in 171.16 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