current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:42:59 2012 Optimize a model with 41595 rows, 7665 columns and 131393 nonzeros Presolve time: 0.16s Presolved: 41595 rows, 7665 columns, 131393 nonzeros Variable types: 0 continuous, 7665 integer (7665 binary) Root relaxation: objective 0.000000e+00, 291 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 (560 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:00 2012 Optimize a model with 20505 rows, 4125 columns and 64583 nonzeros Presolve time: 0.09s Presolved: 20505 rows, 4125 columns, 64583 nonzeros Variable types: 0 continuous, 4125 integer (4125 binary) Root relaxation: objective 0.000000e+00, 311 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 (730 simplex iterations) in 0.14 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 20:43:00 2012 Optimize a model with 9960 rows, 2355 columns and 31178 nonzeros Presolve time: 0.03s Presolved: 9960 rows, 2355 columns, 31178 nonzeros Variable types: 0 continuous, 2355 integer (2355 binary) Root relaxation: objective 0.000000e+00, 240 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 (460 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 20:43:00 2012 Optimize a model with 5039 rows, 1529 columns and 15589 nonzeros Presolve time: 0.01s Presolved: 5039 rows, 1529 columns, 15589 nonzeros Variable types: 0 continuous, 1529 integer (1529 binary) Root relaxation: objective 0.000000e+00, 247 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 (978 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 20:43:01 2012 Optimize a model with 2227 rows, 1057 columns and 6681 nonzeros Presolve time: 0.01s Presolved: 2227 rows, 1057 columns, 6681 nonzeros Variable types: 0 continuous, 1057 integer (1057 binary) Root relaxation: objective 0.000000e+00, 265 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 0 234 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3737 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 20:43:01 2012 Optimize a model with 3633 rows, 1293 columns and 11135 nonzeros Presolve time: 0.01s Presolved: 3633 rows, 1293 columns, 11135 nonzeros Variable types: 0 continuous, 1293 integer (1293 binary) Root relaxation: objective 0.000000e+00, 248 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 0 241 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 0 0.00000 0 274 - 0.00000 - - 1s 0 0 0.00000 0 274 - 0.00000 - - 1s 0 2 0.00000 0 274 - 0.00000 - - 1s 704 121 0.00000 18 260 - 0.00000 - 62.5 5s 713 127 0.00000 18 215 - 0.00000 - 61.7 10s 719 131 0.00000 15 224 - 0.00000 - 61.2 15s * 791 105 37 0.0000000 0.00000 0.0% 119 18s Cutting planes: Clique: 2 Zero half: 12 Explored 792 nodes (108005 simplex iterations) in 18.72 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 20:43:20 2012 Optimize a model with 2930 rows, 1175 columns and 8908 nonzeros Presolve time: 0.01s Presolved: 2930 rows, 1175 columns, 8908 nonzeros Variable types: 0 continuous, 1175 integer (1175 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 337 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 1s 0 0 0.00000 0 348 - 0.00000 - - 1s 0 0 0.00000 0 343 - 0.00000 - - 1s 0 0 0.00000 0 335 - 0.00000 - - 2s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 343 - 0.00000 - - 3s 0 0 0.00000 0 342 - 0.00000 - - 3s 0 0 0.00000 0 340 - 0.00000 - - 3s 0 0 0.00000 0 342 - 0.00000 - - 4s 0 0 0.00000 0 342 - 0.00000 - - 4s 0 2 0.00000 0 342 - 0.00000 - - 5s Cutting planes: Clique: 16 Zero half: 35 Explored 32 nodes (36000 simplex iterations) in 6.01 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