current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:27 2012 Optimize a model with 41713 rows, 7667 columns and 131747 nonzeros Presolve time: 0.16s Presolved: 41713 rows, 7667 columns, 131747 nonzeros Variable types: 0 continuous, 7667 integer (7667 binary) Root relaxation: objective 0.000000e+00, 289 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 (549 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 20:43:27 2012 Optimize a model with 20563 rows, 4127 columns and 64757 nonzeros Presolve time: 0.09s Presolved: 20563 rows, 4127 columns, 64757 nonzeros Variable types: 0 continuous, 4127 integer (4127 binary) Root relaxation: objective 0.000000e+00, 288 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 (540 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% current bounds on the number of colors: 0 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:43:28 2012 Optimize a model with 9988 rows, 2357 columns and 31262 nonzeros Presolve time: 0.03s Presolved: 9988 rows, 2357 columns, 31262 nonzeros Variable types: 0 continuous, 2357 integer (2357 binary) Root relaxation: objective 0.000000e+00, 242 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 (466 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 20:43:28 2012 Optimize a model with 5053 rows, 1531 columns and 15631 nonzeros Presolve time: 0.01s Presolved: 5053 rows, 1531 columns, 15631 nonzeros Variable types: 0 continuous, 1531 integer (1531 binary) Root relaxation: objective 0.000000e+00, 244 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 (1131 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 20:43:28 2012 Optimize a model with 2233 rows, 1059 columns and 6699 nonzeros Presolve time: 0.01s Presolved: 2233 rows, 1059 columns, 6699 nonzeros Variable types: 0 continuous, 1059 integer (1059 binary) Root relaxation: objective 0.000000e+00, 265 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 0 192 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4286 simplex iterations) in 0.45 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 20:43:29 2012 Optimize a model with 3643 rows, 1295 columns and 11165 nonzeros Presolve time: 0.01s Presolved: 3643 rows, 1295 columns, 11165 nonzeros Variable types: 0 continuous, 1295 integer (1295 binary) Root relaxation: objective 0.000000e+00, 260 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 174 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 1s 0 0 0.00000 0 205 - 0.00000 - - 1s 0 0 0.00000 0 236 - 0.00000 - - 2s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 254 - 0.00000 - - 3s 0 0 0.00000 0 279 - 0.00000 - - 3s 0 0 0.00000 0 313 - 0.00000 - - 4s 0 0 0.00000 0 313 - 0.00000 - - 4s 0 2 0.00000 0 313 - 0.00000 - - 4s 16 14 0.00000 11 241 - 0.00000 - 216 5s 607 98 0.00000 3 274 - 0.00000 - 69.0 10s 851 55 infeasible 30 - 0.00000 - 113 15s 1468 56 infeasible 31 - 0.00000 - 128 20s * 1534 0 37 0.0000000 0.00000 0.0% 130 20s Cutting planes: Gomory: 1 Clique: 8 Zero half: 3 Explored 1535 nodes (234444 simplex iterations) in 20.61 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 20:43:49 2012 Optimize a model with 2938 rows, 1177 columns and 8932 nonzeros Presolve time: 0.01s Presolved: 2938 rows, 1177 columns, 8932 nonzeros Variable types: 0 continuous, 1177 integer (1177 binary) Root relaxation: objective 0.000000e+00, 258 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 0 166 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 0s 0 0 0.00000 0 339 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 1s 0 0 0.00000 0 333 - 0.00000 - - 1s 0 0 0.00000 0 337 - 0.00000 - - 2s 0 0 0.00000 0 335 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 340 - 0.00000 - - 4s 0 0 0.00000 0 339 - 0.00000 - - 4s 0 0 0.00000 0 339 - 0.00000 - - 4s 0 0 0.00000 0 338 - 0.00000 - - 4s 0 2 0.00000 0 338 - 0.00000 - - 5s Cutting planes: Clique: 20 Zero half: 19 Explored 49 nodes (42655 simplex iterations) in 6.55 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