current bounds on the number of colors: 0 -- 107 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:15 2012 Optimize a model with 29628 rows, 6228 columns and 94234 nonzeros Presolve time: 0.15s Presolved: 29628 rows, 6228 columns, 94234 nonzeros Variable types: 0 continuous, 6228 integer (6228 binary) Root relaxation: objective 0.000000e+00, 316 iterations, 0.02 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 (535 simplex iterations) in 0.20 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 -- 53 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:15 2012 Optimize a model with 14589 rows, 3339 columns and 46228 nonzeros Presolve time: 0.06s Presolved: 14589 rows, 3339 columns, 46228 nonzeros Variable types: 0 continuous, 3339 integer (3339 binary) Root relaxation: objective 0.000000e+00, 233 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 (443 simplex iterations) in 0.09 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 -- 26 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:15 2012 Optimize a model with 7348 rows, 1948 columns and 23114 nonzeros Presolve time: 0.02s Presolved: 7348 rows, 1948 columns, 23114 nonzeros Variable types: 0 continuous, 1948 integer (1948 binary) Root relaxation: objective 0.000000e+00, 218 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 (417 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:15 2012 Optimize a model with 3449 rows, 1199 columns and 10668 nonzeros Presolve time: 0.01s Presolved: 3449 rows, 1199 columns, 10668 nonzeros Variable types: 0 continuous, 1199 integer (1199 binary) Root relaxation: objective 0.000000e+00, 224 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 (880 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:16 2012 Optimize a model with 1778 rows, 878 columns and 5334 nonzeros Presolve time: 0.00s Presolved: 1778 rows, 878 columns, 5334 nonzeros Variable types: 0 continuous, 878 integer (878 binary) Root relaxation: objective 0.000000e+00, 234 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3246 simplex iterations) in 0.27 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:16 2012 Optimize a model with 2335 rows, 985 columns and 7112 nonzeros Presolve time: 0.01s Presolved: 2335 rows, 985 columns, 7112 nonzeros Variable types: 0 continuous, 985 integer (985 binary) Root relaxation: objective 0.000000e+00, 227 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 0 199 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 1s 0 0 0.00000 0 170 - 0.00000 - - 1s 0 0 0.00000 0 309 - 0.00000 - - 1s 0 0 0.00000 0 291 - 0.00000 - - 2s 0 0 0.00000 0 275 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 271 - 0.00000 - - 2s 0 0 0.00000 0 273 - 0.00000 - - 3s 0 0 0.00000 0 273 - 0.00000 - - 3s 0 2 0.00000 0 273 - 0.00000 - - 3s Cutting planes: Clique: 1 Zero half: 22 Explored 137 nodes (45805 simplex iterations) in 4.66 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:59:21 2012 Optimize a model with 2892 rows, 1092 columns and 8890 nonzeros Presolve time: 0.01s Presolved: 2892 rows, 1092 columns, 8890 nonzeros Variable types: 0 continuous, 1092 integer (1092 binary) Root relaxation: objective 0.000000e+00, 232 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 0 210 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 151 MIR: 5 Zero half: 277 Explored 0 nodes (2374 simplex iterations) in 0.15 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% optimal solution found: number of colors: 5