current bounds on the number of colors: 0 -- 124 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:06:06 2012 Optimize a model with 47182 rows, 8447 columns and 148862 nonzeros Presolve time: 0.16s Presolved: 47182 rows, 8447 columns, 148862 nonzeros Variable types: 0 continuous, 8447 integer (8447 binary) Root relaxation: objective 0.000000e+00, 328 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 (711 simplex iterations) in 0.31 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 -- 62 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:06:07 2012 Optimize a model with 23653 rows, 4603 columns and 74431 nonzeros Presolve time: 0.10s Presolved: 23653 rows, 4603 columns, 74431 nonzeros Variable types: 0 continuous, 4603 integer (4603 binary) Root relaxation: objective 0.000000e+00, 302 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 (570 simplex iterations) in 0.16 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 -- 31 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:06:08 2012 Optimize a model with 11509 rows, 2619 columns and 36015 nonzeros Presolve time: 0.04s Presolved: 11509 rows, 2619 columns, 36015 nonzeros Variable types: 0 continuous, 2619 integer (2619 binary) Root relaxation: objective 0.000000e+00, 253 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 (502 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:06:08 2012 Optimize a model with 5437 rows, 1627 columns and 16807 nonzeros Presolve time: 0.01s Presolved: 5437 rows, 1627 columns, 16807 nonzeros Variable types: 0 continuous, 1627 integer (1627 binary) Root relaxation: objective 0.000000e+00, 258 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 (985 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:06:08 2012 Optimize a model with 2401 rows, 1131 columns and 7203 nonzeros Presolve time: 0.01s Presolved: 2401 rows, 1131 columns, 7203 nonzeros Variable types: 0 continuous, 1131 integer (1131 binary) Root relaxation: objective 0.000000e+00, 273 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 0 248 - 0.00000 - - 0s 0 0 0.00000 0 260 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4316 simplex iterations) in 0.51 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:06:08 2012 Optimize a model with 3919 rows, 1379 columns and 12005 nonzeros Presolve time: 0.01s Presolved: 3919 rows, 1379 columns, 12005 nonzeros Variable types: 0 continuous, 1379 integer (1379 binary) Root relaxation: objective 0.000000e+00, 266 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 0 242 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 1s 0 0 0.00000 0 336 - 0.00000 - - 1s 0 0 0.00000 0 194 - 0.00000 - - 1s 0 0 0.00000 0 186 - 0.00000 - - 2s 0 0 0.00000 0 258 - 0.00000 - - 2s 0 0 0.00000 0 250 - 0.00000 - - 2s 0 0 0.00000 0 278 - 0.00000 - - 3s 0 0 0.00000 0 262 - 0.00000 - - 3s 0 0 0.00000 0 325 - 0.00000 - - 4s 0 0 0.00000 0 325 - 0.00000 - - 4s 0 2 0.00000 0 325 - 0.00000 - - 5s 705 80 0.00000 27 210 - 0.00000 - 80.8 10s 711 84 0.00000 27 130 - 0.00000 - 80.1 15s 736 96 0.00000 23 279 - 0.00000 - 131 20s 1110 64 infeasible 37 - 0.00000 - 149 25s 1494 50 0.00000 32 274 - 0.00000 - 161 30s 1877 45 infeasible 34 - 0.00000 - 168 35s 2312 86 0.00000 31 256 - 0.00000 - 170 40s 2737 83 infeasible 34 - 0.00000 - 172 45s 3189 83 0.00000 29 200 - 0.00000 - 174 50s 3642 85 0.00000 31 188 - 0.00000 - 174 55s 4082 101 infeasible 36 - 0.00000 - 176 60s 4543 128 infeasible 32 - 0.00000 - 177 65s 4974 125 0.00000 36 235 - 0.00000 - 178 70s * 5151 2 38 0.0000000 0.00000 0.0% 178 71s Cutting planes: Clique: 1 Zero half: 15 Explored 5152 nodes (952547 simplex iterations) in 71.69 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:07:20 2012 Optimize a model with 3160 rows, 1255 columns and 9604 nonzeros Presolve time: 0.01s Presolved: 3160 rows, 1255 columns, 9604 nonzeros Variable types: 0 continuous, 1255 integer (1255 binary) Root relaxation: objective 0.000000e+00, 273 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 297 - 0.00000 - - 0s 0 0 0.00000 0 355 - 0.00000 - - 1s 0 0 0.00000 0 364 - 0.00000 - - 1s 0 0 0.00000 0 358 - 0.00000 - - 2s 0 0 0.00000 0 355 - 0.00000 - - 2s 0 0 0.00000 0 353 - 0.00000 - - 3s 0 0 0.00000 0 355 - 0.00000 - - 4s 0 0 0.00000 0 355 - 0.00000 - - 4s 0 2 0.00000 0 355 - 0.00000 - - 5s Cutting planes: Clique: 14 Zero half: 18 Explored 21 nodes (31021 simplex iterations) in 5.91 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