current bounds on the number of colors: 0 -- 114 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:15:07 2012 Optimize a model with 35796 rows, 7124 columns and 113544 nonzeros Presolve time: 0.14s Presolved: 35796 rows, 7124 columns, 113544 nonzeros Variable types: 0 continuous, 7124 integer (7124 binary) Root relaxation: objective 0.000000e+00, 265 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 (522 simplex iterations) in 0.23 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 20:15:08 2012 Optimize a model with 17642 rows, 3818 columns and 55776 nonzeros Presolve time: 0.07s Presolved: 17642 rows, 3818 columns, 55776 nonzeros Variable types: 0 continuous, 3818 integer (3818 binary) Root relaxation: objective 0.000000e+00, 275 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 (505 simplex iterations) in 0.11 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 20:15:08 2012 Optimize a model with 8878 rows, 2222 columns and 27888 nonzeros Presolve time: 0.03s Presolved: 8878 rows, 2222 columns, 27888 nonzeros Variable types: 0 continuous, 2222 integer (2222 binary) Root relaxation: objective 0.000000e+00, 237 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 (598 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 20:15:08 2012 Optimize a model with 4496 rows, 1424 columns and 13944 nonzeros Presolve time: 0.01s Presolved: 4496 rows, 1424 columns, 13944 nonzeros Variable types: 0 continuous, 1424 integer (1424 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (818 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 20:15:08 2012 Optimize a model with 1992 rows, 968 columns and 5976 nonzeros Presolve time: 0.00s Presolved: 1992 rows, 968 columns, 5976 nonzeros Variable types: 0 continuous, 968 integer (968 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 0 228 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3543 simplex iterations) in 0.31 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 20:15:09 2012 Optimize a model with 3244 rows, 1196 columns and 9960 nonzeros Presolve time: 0.01s Presolved: 3244 rows, 1196 columns, 9960 nonzeros Variable types: 0 continuous, 1196 integer (1196 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 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 280 - 0.00000 - - 0s 0 0 0.00000 0 271 - 0.00000 - - 0s 0 0 0.00000 0 310 - 0.00000 - - 1s 0 0 0.00000 0 169 - 0.00000 - - 1s 0 2 0.00000 0 169 - 0.00000 - - 1s * 61 0 25 0.0000000 0.00000 0.0% 68.2 1s Explored 62 nodes (18563 simplex iterations) in 1.89 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 20:15:11 2012 Optimize a model with 2618 rows, 1082 columns and 7968 nonzeros Presolve time: 0.01s Presolved: 2618 rows, 1082 columns, 7968 nonzeros Variable types: 0 continuous, 1082 integer (1082 binary) Root relaxation: objective 0.000000e+00, 241 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 0 212 - 0.00000 - - 0s 0 0 0.00000 0 247 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 0s 0 0 0.00000 0 307 - 0.00000 - - 1s 0 0 0.00000 0 216 - 0.00000 - - 1s 0 0 0.00000 0 280 - 0.00000 - - 2s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 0 0.00000 0 301 - 0.00000 - - 3s 0 0 0.00000 0 301 - 0.00000 - - 3s 0 2 0.00000 0 301 - 0.00000 - - 3s 104 2 0.00000 5 248 - 0.00000 - 178 5s Cutting planes: Clique: 7 Zero half: 25 Explored 109 nodes (44054 simplex iterations) in 5.06 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