current bounds on the number of colors: 0 -- 117 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:09 2012 Optimize a model with 38281 rows, 7444 columns and 121278 nonzeros Presolve time: 0.15s Presolved: 38281 rows, 7444 columns, 121278 nonzeros Variable types: 0 continuous, 7444 integer (7444 binary) Root relaxation: objective 0.000000e+00, 306 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 (663 simplex iterations) in 0.27 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:10 2012 Optimize a model with 19199 rows, 4051 columns and 60639 nonzeros Presolve time: 0.08s Presolved: 19199 rows, 4051 columns, 60639 nonzeros Variable types: 0 continuous, 4051 integer (4051 binary) Root relaxation: objective 0.000000e+00, 279 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 (512 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:10 2012 Optimize a model with 9329 rows, 2296 columns and 29274 nonzeros Presolve time: 0.03s Presolved: 9329 rows, 2296 columns, 29274 nonzeros Variable types: 0 continuous, 2296 integer (2296 binary) Root relaxation: objective 0.000000e+00, 241 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 (486 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:10 2012 Optimize a model with 4723 rows, 1477 columns and 14637 nonzeros Presolve time: 0.01s Presolved: 4723 rows, 1477 columns, 14637 nonzeros Variable types: 0 continuous, 1477 integer (1477 binary) Root relaxation: objective 0.000000e+00, 250 iterations, 0.00 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 (862 simplex iterations) in 0.04 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 20:37:10 2012 Optimize a model with 2091 rows, 1009 columns and 6273 nonzeros Presolve time: 0.01s Presolved: 2091 rows, 1009 columns, 6273 nonzeros Variable types: 0 continuous, 1009 integer (1009 binary) Root relaxation: objective 0.000000e+00, 259 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3749 simplex iterations) in 0.38 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 20:37:11 2012 Optimize a model with 3407 rows, 1243 columns and 10455 nonzeros Presolve time: 0.01s Presolved: 3407 rows, 1243 columns, 10455 nonzeros Variable types: 0 continuous, 1243 integer (1243 binary) Root relaxation: objective 0.000000e+00, 251 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 2 Zero half: 3 Explored 0 nodes (11353 simplex iterations) in 1.16 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:37:12 2012 Optimize a model with 2749 rows, 1126 columns and 8364 nonzeros Presolve time: 0.01s Presolved: 2749 rows, 1126 columns, 8364 nonzeros Variable types: 0 continuous, 1126 integer (1126 binary) Root relaxation: objective 0.000000e+00, 275 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 1s 0 0 0.00000 0 335 - 0.00000 - - 1s 0 0 0.00000 0 323 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 1s 0 0 0.00000 0 309 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 316 - 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 0 319 - 0.00000 - - 4s 0 0 0.00000 0 310 - 0.00000 - - 4s 0 0 0.00000 0 302 - 0.00000 - - 4s 0 0 0.00000 0 301 - 0.00000 - - 5s 0 0 0.00000 0 294 - 0.00000 - - 5s 0 0 0.00000 0 304 - 0.00000 - - 5s 0 0 0.00000 0 304 - 0.00000 - - 6s 0 2 0.00000 0 304 - 0.00000 - - 6s Cutting planes: Clique: 15 Zero half: 24 Explored 75 nodes (53738 simplex iterations) in 7.77 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