current bounds on the number of colors: 0 -- 93 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:48 2012 Optimize a model with 20149 rows, 4714 columns and 64446 nonzeros Presolve time: 0.12s Presolved: 20149 rows, 4714 columns, 64446 nonzeros Variable types: 0 continuous, 4714 integer (4714 binary) Root relaxation: objective 0.000000e+00, 331 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 (542 simplex iterations) in 0.16 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 -- 46 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:49 2012 Optimize a model with 10121 rows, 2575 columns and 32223 nonzeros Presolve time: 0.04s Presolved: 10121 rows, 2575 columns, 32223 nonzeros Variable types: 0 continuous, 2575 integer (2575 binary) Root relaxation: objective 0.000000e+00, 214 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 (392 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:49 2012 Optimize a model with 4889 rows, 1459 columns and 15411 nonzeros Presolve time: 0.01s Presolved: 4889 rows, 1459 columns, 15411 nonzeros Variable types: 0 continuous, 1459 integer (1459 binary) Root relaxation: objective 0.000000e+00, 193 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 (363 simplex iterations) in 0.03 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:49 2012 Optimize a model with 2273 rows, 901 columns and 7005 nonzeros Presolve time: 0.01s Presolved: 2273 rows, 901 columns, 7005 nonzeros Variable types: 0 continuous, 901 integer (901 binary) Root relaxation: objective 0.000000e+00, 195 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 (825 simplex iterations) in 0.02 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:49 2012 Optimize a model with 965 rows, 622 columns and 2802 nonzeros Presolve removed 93 rows and 93 columns Presolve time: 0.00s Presolved: 872 rows, 529 columns, 2616 nonzeros Variable types: 0 continuous, 529 integer (529 binary) Root relaxation: objective 0.000000e+00, 95 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 93 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (405 simplex iterations) in 0.01 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:49 2012 Optimize a model with 1401 rows, 715 columns and 4203 nonzeros Presolve time: 0.00s Presolved: 1401 rows, 715 columns, 4203 nonzeros Variable types: 0 continuous, 715 integer (715 binary) Root relaxation: objective 0.000000e+00, 204 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 0 128 - 0.00000 - - 0s 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2845 simplex iterations) in 0.16 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:49 2012 Optimize a model with 1837 rows, 808 columns and 5604 nonzeros Presolve time: 0.00s Presolved: 1837 rows, 808 columns, 5604 nonzeros Variable types: 0 continuous, 808 integer (808 binary) Root relaxation: objective 0.000000e+00, 220 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 0 186 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 0.00000 0 140 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 0.00000 0 239 - 0.00000 - - 0s 0 0 0.00000 0 237 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 1s 0 0 0.00000 0 237 - 0.00000 - - 1s 0 0 0.00000 0 227 - 0.00000 - - 1s 0 2 0.00000 0 227 - 0.00000 - - 1s Cutting planes: Clique: 8 Zero half: 25 Explored 387 nodes (45908 simplex iterations) in 3.08 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