current bounds on the number of colors: 0 -- 119 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:53:04 2012 Optimize a model with 41419 rows, 7721 columns and 130921 nonzeros Presolve time: 0.16s Presolved: 41419 rows, 7721 columns, 130921 nonzeros Variable types: 0 continuous, 7721 integer (7721 binary) Root relaxation: objective 0.000000e+00, 307 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 (564 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:53:04 2012 Optimize a model with 20419 rows, 4151 columns and 64351 nonzeros Presolve time: 0.09s Presolved: 20419 rows, 4151 columns, 64351 nonzeros Variable types: 0 continuous, 4151 integer (4151 binary) Root relaxation: objective 0.000000e+00, 287 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 (546 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 20:53:05 2012 Optimize a model with 9919 rows, 2366 columns and 31066 nonzeros Presolve time: 0.03s Presolved: 9919 rows, 2366 columns, 31066 nonzeros Variable types: 0 continuous, 2366 integer (2366 binary) Root relaxation: objective 0.000000e+00, 244 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 (470 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 20:53:05 2012 Optimize a model with 5019 rows, 1533 columns and 15533 nonzeros Presolve time: 0.01s Presolved: 5019 rows, 1533 columns, 15533 nonzeros Variable types: 0 continuous, 1533 integer (1533 binary) Root relaxation: objective 0.000000e+00, 273 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 (1258 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:53:05 2012 Optimize a model with 2219 rows, 1057 columns and 6657 nonzeros Presolve time: 0.01s Presolved: 2219 rows, 1057 columns, 6657 nonzeros Variable types: 0 continuous, 1057 integer (1057 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 0 204 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4004 simplex iterations) in 0.39 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 20:53:05 2012 Optimize a model with 3619 rows, 1295 columns and 11095 nonzeros Presolve time: 0.01s Presolved: 3619 rows, 1295 columns, 11095 nonzeros Variable types: 0 continuous, 1295 integer (1295 binary) Root relaxation: objective 0.000000e+00, 249 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 0 228 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 305 - 0.00000 - - 0s 0 0 0.00000 0 313 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 1s 0 2 0.00000 0 313 - 0.00000 - - 1s 703 113 0.00000 19 296 - 0.00000 - 65.6 5s 710 118 0.00000 9 239 - 0.00000 - 64.9 10s 717 123 infeasible 11 - 0.00000 - 107 15s * 779 96 32 0.0000000 0.00000 0.0% 110 15s Cutting planes: Gomory: 1 Clique: 4 Zero half: 6 Explored 780 nodes (98400 simplex iterations) in 15.68 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 20:53:21 2012 Optimize a model with 2919 rows, 1176 columns and 8876 nonzeros Presolve time: 0.01s Presolved: 2919 rows, 1176 columns, 8876 nonzeros Variable types: 0 continuous, 1176 integer (1176 binary) Root relaxation: objective 0.000000e+00, 252 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 0 236 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 357 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 1s 0 0 0.00000 0 346 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 1s 0 0 0.00000 0 351 - 0.00000 - - 1s 0 0 0.00000 0 345 - 0.00000 - - 2s 0 0 0.00000 0 346 - 0.00000 - - 2s 0 0 0.00000 0 327 - 0.00000 - - 3s 0 0 0.00000 0 328 - 0.00000 - - 3s 0 0 0.00000 0 325 - 0.00000 - - 4s 0 0 0.00000 0 320 - 0.00000 - - 4s 0 0 0.00000 0 319 - 0.00000 - - 5s 0 0 0.00000 0 332 - 0.00000 - - 5s 0 0 0.00000 0 332 - 0.00000 - - 6s 0 2 0.00000 0 332 - 0.00000 - - 6s Cutting planes: Clique: 21 Zero half: 19 Explored 65 nodes (44745 simplex iterations) in 7.84 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