current bounds on the number of colors: 0 -- 119 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:53:30 2012 Optimize a model with 41537 rows, 7723 columns and 131275 nonzeros Presolve time: 0.15s Presolved: 41537 rows, 7723 columns, 131275 nonzeros Variable types: 0 continuous, 7723 integer (7723 binary) Root relaxation: objective 0.000000e+00, 290 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 (556 simplex iterations) in 0.25 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 20:53:31 2012 Optimize a model with 20477 rows, 4153 columns and 64525 nonzeros Presolve time: 0.09s Presolved: 20477 rows, 4153 columns, 64525 nonzeros Variable types: 0 continuous, 4153 integer (4153 binary) Root relaxation: objective 0.000000e+00, 306 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 (572 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 20:53:31 2012 Optimize a model with 9947 rows, 2368 columns and 31150 nonzeros Presolve time: 0.03s Presolved: 9947 rows, 2368 columns, 31150 nonzeros Variable types: 0 continuous, 2368 integer (2368 binary) Root relaxation: objective 0.000000e+00, 238 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 (483 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 20:53:31 2012 Optimize a model with 5033 rows, 1535 columns and 15575 nonzeros Presolve time: 0.01s Presolved: 5033 rows, 1535 columns, 15575 nonzeros Variable types: 0 continuous, 1535 integer (1535 binary) Root relaxation: objective 0.000000e+00, 265 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 (1094 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 20:53:31 2012 Optimize a model with 2225 rows, 1059 columns and 6675 nonzeros Presolve time: 0.01s Presolved: 2225 rows, 1059 columns, 6675 nonzeros Variable types: 0 continuous, 1059 integer (1059 binary) Root relaxation: objective 0.000000e+00, 272 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 0 232 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4325 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 20:53:32 2012 Optimize a model with 3629 rows, 1297 columns and 11125 nonzeros Presolve time: 0.01s Presolved: 3629 rows, 1297 columns, 11125 nonzeros Variable types: 0 continuous, 1297 integer (1297 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 1s 0 0 0.00000 0 281 - 0.00000 - - 1s 0 0 0.00000 0 281 - 0.00000 - - 1s 0 2 0.00000 0 281 - 0.00000 - - 2s * 536 0 30 0.0000000 0.00000 0.0% 78.9 4s Cutting planes: Clique: 5 Zero half: 30 Explored 537 nodes (57405 simplex iterations) in 4.11 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:53:36 2012 Optimize a model with 2927 rows, 1178 columns and 8900 nonzeros Presolve time: 0.01s Presolved: 2927 rows, 1178 columns, 8900 nonzeros Variable types: 0 continuous, 1178 integer (1178 binary) Root relaxation: objective 0.000000e+00, 269 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 327 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 346 - 0.00000 - - 3s 0 0 0.00000 0 346 - 0.00000 - - 3s 0 2 0.00000 0 346 - 0.00000 - - 4s 29 5 0.00000 4 313 - 0.00000 - 290 5s Cutting planes: Clique: 15 Zero half: 26 Explored 105 nodes (44263 simplex iterations) in 6.22 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