current bounds on the number of colors: 0 -- 115 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:20:53 2012 Optimize a model with 38020 rows, 7220 columns and 120270 nonzeros Presolve time: 0.15s Presolved: 38020 rows, 7220 columns, 120270 nonzeros Variable types: 0 continuous, 7220 integer (7220 binary) Root relaxation: objective 0.000000e+00, 310 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 (557 simplex iterations) in 0.24 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:20:54 2012 Optimize a model with 18735 rows, 3885 columns and 59080 nonzeros Presolve time: 0.08s Presolved: 18735 rows, 3885 columns, 59080 nonzeros Variable types: 0 continuous, 3885 integer (3885 binary) Root relaxation: objective 0.000000e+00, 282 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 (655 simplex iterations) in 0.13 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:20:54 2012 Optimize a model with 9425 rows, 2275 columns and 29540 nonzeros Presolve time: 0.03s Presolved: 9425 rows, 2275 columns, 29540 nonzeros Variable types: 0 continuous, 2275 integer (2275 binary) Root relaxation: objective 0.000000e+00, 231 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 (453 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 20:20:55 2012 Optimize a model with 4770 rows, 1470 columns and 14770 nonzeros Presolve time: 0.01s Presolved: 4770 rows, 1470 columns, 14770 nonzeros Variable types: 0 continuous, 1470 integer (1470 binary) Root relaxation: objective 0.000000e+00, 245 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 (976 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 20:20:55 2012 Optimize a model with 2110 rows, 1010 columns and 6330 nonzeros Presolve time: 0.01s Presolved: 2110 rows, 1010 columns, 6330 nonzeros Variable types: 0 continuous, 1010 integer (1010 binary) Root relaxation: objective 0.000000e+00, 258 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3248 simplex iterations) in 0.34 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 20:20:55 2012 Optimize a model with 3440 rows, 1240 columns and 10550 nonzeros Presolve time: 0.01s Presolved: 3440 rows, 1240 columns, 10550 nonzeros Variable types: 0 continuous, 1240 integer (1240 binary) Root relaxation: objective 0.000000e+00, 245 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 163 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 2 Zero half: 9 Explored 0 nodes (7640 simplex iterations) in 0.73 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 20:20:56 2012 Optimize a model with 2775 rows, 1125 columns and 8440 nonzeros Presolve time: 0.01s Presolved: 2775 rows, 1125 columns, 8440 nonzeros Variable types: 0 continuous, 1125 integer (1125 binary) Root relaxation: objective 0.000000e+00, 256 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 335 - 0.00000 - - 0s 0 0 0.00000 0 330 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 1s 0 0 0.00000 0 319 - 0.00000 - - 1s 0 0 0.00000 0 317 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 264 - 0.00000 - - 3s 0 0 0.00000 0 311 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 0 0.00000 0 319 - 0.00000 - - 5s 0 0 0.00000 0 319 - 0.00000 - - 5s 0 2 0.00000 0 318 - 0.00000 - - 5s Cutting planes: Clique: 7 Zero half: 30 Explored 19 nodes (33700 simplex iterations) in 6.12 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