current bounds on the number of colors: 0 -- 116 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:27:52 2012 Optimize a model with 39208 rows, 7402 columns and 124004 nonzeros Presolve time: 0.15s Presolved: 39208 rows, 7402 columns, 124004 nonzeros Variable types: 0 continuous, 7402 integer (7402 binary) Root relaxation: objective 0.000000e+00, 318 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 (569 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:27:53 2012 Optimize a model with 19662 rows, 4038 columns and 62002 nonzeros Presolve time: 0.08s Presolved: 19662 rows, 4038 columns, 62002 nonzeros Variable types: 0 continuous, 4038 integer (4038 binary) Root relaxation: objective 0.000000e+00, 289 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 (531 simplex iterations) in 0.12 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 20:27:53 2012 Optimize a model with 9552 rows, 2298 columns and 29932 nonzeros Presolve time: 0.03s Presolved: 9552 rows, 2298 columns, 29932 nonzeros Variable types: 0 continuous, 2298 integer (2298 binary) Root relaxation: objective 0.000000e+00, 234 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 (463 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 20:27:53 2012 Optimize a model with 4834 rows, 1486 columns and 14966 nonzeros Presolve time: 0.01s Presolved: 4834 rows, 1486 columns, 14966 nonzeros Variable types: 0 continuous, 1486 integer (1486 binary) Root relaxation: objective 0.000000e+00, 249 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 (1079 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 20:27:53 2012 Optimize a model with 2138 rows, 1022 columns and 6414 nonzeros Presolve time: 0.01s Presolved: 2138 rows, 1022 columns, 6414 nonzeros Variable types: 0 continuous, 1022 integer (1022 binary) Root relaxation: objective 0.000000e+00, 252 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 0 232 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3448 simplex iterations) in 0.38 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 20:27:54 2012 Optimize a model with 3486 rows, 1254 columns and 10690 nonzeros Presolve time: 0.01s Presolved: 3486 rows, 1254 columns, 10690 nonzeros Variable types: 0 continuous, 1254 integer (1254 binary) Root relaxation: objective 0.000000e+00, 245 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 1s 0 0 0.00000 0 262 - 0.00000 - - 1s 0 0 0.00000 0 270 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 2 0.00000 0 292 - 0.00000 - - 2s * 351 1 24 0.0000000 0.00000 0.0% 72.1 4s Cutting planes: Clique: 6 Zero half: 20 Explored 352 nodes (47058 simplex iterations) in 4.20 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 20:27:58 2012 Optimize a model with 2812 rows, 1138 columns and 8552 nonzeros Presolve time: 0.01s Presolved: 2812 rows, 1138 columns, 8552 nonzeros Variable types: 0 continuous, 1138 integer (1138 binary) Root relaxation: objective 0.000000e+00, 248 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 0 150 - 0.00000 - - 0s 0 0 0.00000 0 341 - 0.00000 - - 0s 0 0 0.00000 0 315 - 0.00000 - - 0s 0 0 0.00000 0 333 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 1s 0 0 0.00000 0 351 - 0.00000 - - 2s 0 0 0.00000 0 337 - 0.00000 - - 2s 0 0 0.00000 0 327 - 0.00000 - - 3s 0 0 0.00000 0 336 - 0.00000 - - 3s 0 0 0.00000 0 330 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 4s 0 0 0.00000 0 328 - 0.00000 - - 5s 0 0 0.00000 0 326 - 0.00000 - - 5s 0 2 0.00000 0 326 - 0.00000 - - 5s Cutting planes: Gomory: 2 Clique: 11 Zero half: 26 Explored 93 nodes (46939 simplex iterations) in 7.24 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