current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:28 2012 Optimize a model with 23276 rows, 5324 columns and 74382 nonzeros Presolve time: 0.13s Presolved: 23276 rows, 5324 columns, 74382 nonzeros Variable types: 0 continuous, 5324 integer (5324 binary) Root relaxation: objective 0.000000e+00, 330 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 (581 simplex iterations) in 0.18 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 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:29 2012 Optimize a model with 11451 rows, 2849 columns and 36432 nonzeros Presolve time: 0.05s Presolved: 11451 rows, 2849 columns, 36432 nonzeros Variable types: 0 continuous, 2849 integer (2849 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 (431 simplex iterations) in 0.07 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 -- 24 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:29 2012 Optimize a model with 5775 rows, 1661 columns and 18216 nonzeros Presolve time: 0.02s Presolved: 5775 rows, 1661 columns, 18216 nonzeros Variable types: 0 continuous, 1661 integer (1661 binary) Root relaxation: objective 0.000000e+00, 211 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 (400 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:29 2012 Optimize a model with 2937 rows, 1067 columns and 9108 nonzeros Presolve time: 0.01s Presolved: 2937 rows, 1067 columns, 9108 nonzeros Variable types: 0 continuous, 1067 integer (1067 binary) Root relaxation: objective 0.000000e+00, 236 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 (914 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:29 2012 Optimize a model with 1518 rows, 770 columns and 4554 nonzeros Presolve time: 0.00s Presolved: 1518 rows, 770 columns, 4554 nonzeros Variable types: 0 continuous, 770 integer (770 binary) Root relaxation: objective 0.000000e+00, 233 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 0.00000 0 245 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2912 simplex iterations) in 0.24 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 19:51:29 2012 Optimize a model with 1991 rows, 869 columns and 6072 nonzeros Presolve time: 0.00s Presolved: 1991 rows, 869 columns, 6072 nonzeros Variable types: 0 continuous, 869 integer (869 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 132 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 1s 0 0 0.00000 0 255 - 0.00000 - - 1s 0 0 0.00000 0 233 - 0.00000 - - 1s 0 0 0.00000 0 241 - 0.00000 - - 1s 0 0 0.00000 0 241 - 0.00000 - - 1s 0 2 0.00000 0 241 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 17 Explored 443 nodes (55147 simplex iterations) in 3.61 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 19:51:33 2012 Optimize a model with 2464 rows, 968 columns and 7590 nonzeros Presolve time: 0.01s Presolved: 2464 rows, 968 columns, 7590 nonzeros Variable types: 0 continuous, 968 integer (968 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 0 109 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2344 simplex iterations) in 0.13 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