current bounds on the number of colors: 0 -- 93 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:06 2012 Optimize a model with 21575 rows, 4745 columns and 68724 nonzeros Presolve time: 0.12s Presolved: 21575 rows, 4745 columns, 68724 nonzeros Variable types: 0 continuous, 4745 integer (4745 binary) Root relaxation: objective 0.000000e+00, 252 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 (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 -- 46 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:07 2012 Optimize a model with 10834 rows, 2606 columns and 34362 nonzeros Presolve time: 0.04s Presolved: 10834 rows, 2606 columns, 34362 nonzeros Variable types: 0 continuous, 2606 integer (2606 binary) Root relaxation: objective 0.000000e+00, 190 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 (393 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 19:47:07 2012 Optimize a model with 5230 rows, 1490 columns and 16434 nonzeros Presolve time: 0.02s Presolved: 5230 rows, 1490 columns, 16434 nonzeros Variable types: 0 continuous, 1490 integer (1490 binary) Root relaxation: objective 0.000000e+00, 199 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 (385 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 19:47:07 2012 Optimize a model with 2428 rows, 932 columns and 7470 nonzeros Presolve time: 0.01s Presolved: 2428 rows, 932 columns, 7470 nonzeros Variable types: 0 continuous, 932 integer (932 binary) Root relaxation: objective 0.000000e+00, 203 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 0 119 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1265 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:07 2012 Optimize a model with 1027 rows, 653 columns and 2988 nonzeros Presolve removed 93 rows and 93 columns Presolve time: 0.00s Presolved: 934 rows, 560 columns, 2802 nonzeros Variable types: 0 continuous, 560 integer (560 binary) Root relaxation: objective 0.000000e+00, 99 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 (398 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 19:47:07 2012 Optimize a model with 1494 rows, 746 columns and 4482 nonzeros Presolve time: 0.00s Presolved: 1494 rows, 746 columns, 4482 nonzeros Variable types: 0 continuous, 746 integer (746 binary) Root relaxation: objective 0.000000e+00, 219 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 0 184 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2395 simplex iterations) in 0.21 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 19:47:07 2012 Optimize a model with 1961 rows, 839 columns and 5976 nonzeros Presolve time: 0.00s Presolved: 1961 rows, 839 columns, 5976 nonzeros Variable types: 0 continuous, 839 integer (839 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 0 176 - 0.00000 - - 0s 0 0 0.00000 0 262 - 0.00000 - - 0s 0 0 0.00000 0 261 - 0.00000 - - 0s 0 0 0.00000 0 262 - 0.00000 - - 0s 0 0 0.00000 0 251 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s 0 0 0.00000 0 256 - 0.00000 - - 1s 0 0 0.00000 0 255 - 0.00000 - - 1s 0 0 0.00000 0 264 - 0.00000 - - 1s 0 0 0.00000 0 259 - 0.00000 - - 1s 0 0 0.00000 0 248 - 0.00000 - - 1s 0 0 0.00000 0 239 - 0.00000 - - 2s 0 0 0.00000 0 255 - 0.00000 - - 2s 0 0 0.00000 0 255 - 0.00000 - - 2s 0 2 0.00000 0 255 - 0.00000 - - 2s Cutting planes: Clique: 9 Zero half: 13 Explored 17 nodes (23853 simplex iterations) in 2.82 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