current bounds on the number of colors: 0 -- 114 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:08 2012 Optimize a model with 36708 rows, 7140 columns and 116280 nonzeros Presolve time: 0.15s Presolved: 36708 rows, 7140 columns, 116280 nonzeros Variable types: 0 continuous, 7140 integer (7140 binary) Root relaxation: objective 0.000000e+00, 287 iterations, 0.04 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 (529 simplex iterations) in 0.24 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:09 2012 Optimize a model with 18090 rows, 3834 columns and 57120 nonzeros Presolve time: 0.08s Presolved: 18090 rows, 3834 columns, 57120 nonzeros Variable types: 0 continuous, 3834 integer (3834 binary) Root relaxation: objective 0.000000e+00, 263 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 (527 simplex iterations) in 0.11 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:09 2012 Optimize a model with 9102 rows, 2238 columns and 28560 nonzeros Presolve time: 0.03s Presolved: 9102 rows, 2238 columns, 28560 nonzeros Variable types: 0 continuous, 2238 integer (2238 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 (453 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:09 2012 Optimize a model with 4608 rows, 1440 columns and 14280 nonzeros Presolve time: 0.01s Presolved: 4608 rows, 1440 columns, 14280 nonzeros Variable types: 0 continuous, 1440 integer (1440 binary) Root relaxation: objective 0.000000e+00, 239 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 (771 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:09 2012 Optimize a model with 2040 rows, 984 columns and 6120 nonzeros Presolve time: 0.00s Presolved: 2040 rows, 984 columns, 6120 nonzeros Variable types: 0 continuous, 984 integer (984 binary) Root relaxation: objective 0.000000e+00, 254 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 0 228 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3197 simplex iterations) in 0.29 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:10 2012 Optimize a model with 3324 rows, 1212 columns and 10200 nonzeros Presolve time: 0.01s Presolved: 3324 rows, 1212 columns, 10200 nonzeros Variable types: 0 continuous, 1212 integer (1212 binary) Root relaxation: objective 0.000000e+00, 239 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 0 212 - 0.00000 - - 0s 0 0 0.00000 0 253 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 0s 0 0 0.00000 0 163 - 0.00000 - - 1s 0 0 0.00000 0 193 - 0.00000 - - 1s 0 0 0.00000 0 223 - 0.00000 - - 1s 0 0 0.00000 0 271 - 0.00000 - - 1s 0 0 0.00000 0 227 - 0.00000 - - 2s 0 2 0.00000 0 227 - 0.00000 - - 2s * 191 2 25 0.0000000 0.00000 0.0% 54.6 2s Cutting planes: Clique: 5 Zero half: 2 Explored 192 nodes (32285 simplex iterations) in 2.75 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:13 2012 Optimize a model with 2682 rows, 1098 columns and 8160 nonzeros Presolve time: 0.01s Presolved: 2682 rows, 1098 columns, 8160 nonzeros Variable types: 0 continuous, 1098 integer (1098 binary) Root relaxation: objective 0.000000e+00, 254 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 0s 0 0 0.00000 0 310 - 0.00000 - - 1s 0 0 0.00000 0 305 - 0.00000 - - 1s 0 0 0.00000 0 307 - 0.00000 - - 1s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 313 - 0.00000 - - 2s 0 0 0.00000 0 252 - 0.00000 - - 3s 0 0 0.00000 0 297 - 0.00000 - - 3s 0 0 0.00000 0 297 - 0.00000 - - 3s 0 2 0.00000 0 297 - 0.00000 - - 4s 49 5 infeasible 9 - 0.00000 - 195 5s Cutting planes: Gomory: 1 Clique: 11 Zero half: 27 Explored 57 nodes (37064 simplex iterations) in 5.11 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