current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:13 2012 Optimize a model with 28917 rows, 5767 columns and 91647 nonzeros Presolve time: 0.14s Presolved: 28917 rows, 5767 columns, 91647 nonzeros Variable types: 0 continuous, 5767 integer (5767 binary) Root relaxation: objective 0.000000e+00, 267 iterations, 0.03 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 (491 simplex iterations) in 0.21 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 -- 51 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:13 2012 Optimize a model with 14227 rows, 3115 columns and 44925 nonzeros Presolve time: 0.06s Presolved: 14227 rows, 3115 columns, 44925 nonzeros Variable types: 0 continuous, 3115 integer (3115 binary) Root relaxation: objective 0.000000e+00, 256 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 (650 simplex iterations) in 0.10 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 -- 25 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:14 2012 Optimize a model with 6882 rows, 1789 columns and 21564 nonzeros Presolve time: 0.02s Presolved: 6882 rows, 1789 columns, 21564 nonzeros Variable types: 0 continuous, 1789 integer (1789 binary) Root relaxation: objective 0.000000e+00, 207 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:14 2012 Optimize a model with 3492 rows, 1177 columns and 10782 nonzeros Presolve time: 0.01s Presolved: 3492 rows, 1177 columns, 10782 nonzeros Variable types: 0 continuous, 1177 integer (1177 binary) Root relaxation: objective 0.000000e+00, 217 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 (1310 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:14 2012 Optimize a model with 1797 rows, 871 columns and 5391 nonzeros Presolve time: 0.00s Presolved: 1797 rows, 871 columns, 5391 nonzeros Variable types: 0 continuous, 871 integer (871 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 0 202 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2600 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 19:54:14 2012 Optimize a model with 2362 rows, 973 columns and 7188 nonzeros Presolve time: 0.01s Presolved: 2362 rows, 973 columns, 7188 nonzeros Variable types: 0 continuous, 973 integer (973 binary) Root relaxation: objective 0.000000e+00, 226 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 0 202 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 1s 0 0 0.00000 0 297 - 0.00000 - - 1s 0 0 0.00000 0 291 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 0 0.00000 0 285 - 0.00000 - - 2s 0 0 0.00000 0 285 - 0.00000 - - 3s 0 0 0.00000 0 285 - 0.00000 - - 3s 0 2 0.00000 0 285 - 0.00000 - - 3s Cutting planes: Clique: 17 Zero half: 12 Explored 30 nodes (27100 simplex iterations) in 3.94 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 19:54:18 2012 Optimize a model with 2927 rows, 1075 columns and 8985 nonzeros Presolve time: 0.01s Presolved: 2927 rows, 1075 columns, 8985 nonzeros Variable types: 0 continuous, 1075 integer (1075 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 0.00000 0 198 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 212 MIR: 9 Zero half: 246 Explored 0 nodes (1877 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% optimal solution found: number of colors: 5