current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:14 2012 Optimize a model with 41949 rows, 7671 columns and 132455 nonzeros Presolve time: 0.16s Presolved: 41949 rows, 7671 columns, 132455 nonzeros Variable types: 0 continuous, 7671 integer (7671 binary) Root relaxation: objective 0.000000e+00, 316 iterations, 0.05 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 (637 simplex iterations) in 0.26 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:15 2012 Optimize a model with 20679 rows, 4131 columns and 65105 nonzeros Presolve time: 0.09s Presolved: 20679 rows, 4131 columns, 65105 nonzeros Variable types: 0 continuous, 4131 integer (4131 binary) Root relaxation: objective 0.000000e+00, 282 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 (550 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% current bounds on the number of colors: 0 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:15 2012 Optimize a model with 10044 rows, 2361 columns and 31430 nonzeros Presolve time: 0.03s Presolved: 10044 rows, 2361 columns, 31430 nonzeros Variable types: 0 continuous, 2361 integer (2361 binary) Root relaxation: objective 0.000000e+00, 243 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 (623 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:15 2012 Optimize a model with 5081 rows, 1535 columns and 15715 nonzeros Presolve time: 0.01s Presolved: 5081 rows, 1535 columns, 15715 nonzeros Variable types: 0 continuous, 1535 integer (1535 binary) Root relaxation: objective 0.000000e+00, 240 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 (991 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:15 2012 Optimize a model with 2245 rows, 1063 columns and 6735 nonzeros Presolve time: 0.01s Presolved: 2245 rows, 1063 columns, 6735 nonzeros Variable types: 0 continuous, 1063 integer (1063 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 0 236 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3000 simplex iterations) in 0.36 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 20:45:16 2012 Optimize a model with 3663 rows, 1299 columns and 11225 nonzeros Presolve time: 0.01s Presolved: 3663 rows, 1299 columns, 11225 nonzeros Variable types: 0 continuous, 1299 integer (1299 binary) Root relaxation: objective 0.000000e+00, 256 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 199 - 0.00000 - - 0s 0 0 0.00000 0 281 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 1s 0 0 0.00000 0 246 - 0.00000 - - 1s 0 0 0.00000 0 268 - 0.00000 - - 2s 0 0 0.00000 0 245 - 0.00000 - - 2s 0 0 0.00000 0 271 - 0.00000 - - 3s 0 0 0.00000 0 275 - 0.00000 - - 3s 0 0 0.00000 0 275 - 0.00000 - - 3s 0 2 0.00000 0 275 - 0.00000 - - 4s 289 47 0.00000 33 154 - 0.00000 - 67.0 5s 609 64 0.00000 26 313 - 0.00000 - 57.5 10s 929 118 0.00000 23 241 - 0.00000 - 114 15s * 946 2 34 0.0000000 0.00000 0.0% 114 15s Cutting planes: Gomory: 6 Clique: 5 Zero half: 3 Explored 947 nodes (138791 simplex iterations) in 15.17 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 20:45:31 2012 Optimize a model with 2954 rows, 1181 columns and 8980 nonzeros Presolve time: 0.01s Presolved: 2954 rows, 1181 columns, 8980 nonzeros Variable types: 0 continuous, 1181 integer (1181 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 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 0s 0 0 0.00000 0 335 - 0.00000 - - 1s 0 0 0.00000 0 359 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 1s 0 0 0.00000 0 339 - 0.00000 - - 2s 0 0 0.00000 0 338 - 0.00000 - - 3s 0 0 0.00000 0 343 - 0.00000 - - 4s 0 0 0.00000 0 352 - 0.00000 - - 4s 0 0 0.00000 0 347 - 0.00000 - - 5s 0 0 0.00000 0 338 - 0.00000 - - 5s 0 0 0.00000 0 337 - 0.00000 - - 6s 0 0 0.00000 0 333 - 0.00000 - - 7s 0 0 0.00000 0 327 - 0.00000 - - 7s 0 0 0.00000 0 324 - 0.00000 - - 8s 0 0 0.00000 0 346 - 0.00000 - - 8s 0 0 0.00000 0 343 - 0.00000 - - 8s 0 2 0.00000 0 343 - 0.00000 - - 9s Cutting planes: Clique: 15 Zero half: 22 Explored 18 nodes (50473 simplex iterations) in 9.89 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