current bounds on the number of colors: 0 -- 122 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:40:22 2012 Optimize a model with 43920 rows, 8160 columns and 138836 nonzeros Presolve time: 0.17s Presolved: 43920 rows, 8160 columns, 138836 nonzeros Variable types: 0 continuous, 8160 integer (8160 binary) Root relaxation: objective 0.000000e+00, 298 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 0.27 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 -- 61 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:40:22 2012 Optimize a model with 21662 rows, 4378 columns and 68280 nonzeros Presolve time: 0.09s Presolved: 21662 rows, 4378 columns, 68280 nonzeros Variable types: 0 continuous, 4378 integer (4378 binary) Root relaxation: objective 0.000000e+00, 293 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 (542 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 -- 30 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:40:23 2012 Optimize a model with 10892 rows, 2548 columns and 34140 nonzeros Presolve time: 0.04s Presolved: 10892 rows, 2548 columns, 34140 nonzeros Variable types: 0 continuous, 2548 integer (2548 binary) Root relaxation: objective 0.000000e+00, 254 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 (479 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:40:23 2012 Optimize a model with 5148 rows, 1572 columns and 15932 nonzeros Presolve time: 0.01s Presolved: 5148 rows, 1572 columns, 15932 nonzeros Variable types: 0 continuous, 1572 integer (1572 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (924 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 21:40:23 2012 Optimize a model with 2276 rows, 1084 columns and 6828 nonzeros Presolve time: 0.01s Presolved: 2276 rows, 1084 columns, 6828 nonzeros Variable types: 0 continuous, 1084 integer (1084 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 0 244 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4152 simplex iterations) in 0.39 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 21:40:24 2012 Optimize a model with 3712 rows, 1328 columns and 11380 nonzeros Presolve time: 0.01s Presolved: 3712 rows, 1328 columns, 11380 nonzeros Variable types: 0 continuous, 1328 integer (1328 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 0 230 - 0.00000 - - 0s 0 0 0.00000 0 310 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 1s 0 0 0.00000 0 261 - 0.00000 - - 1s 0 0 0.00000 0 346 - 0.00000 - - 2s 0 0 0.00000 0 259 - 0.00000 - - 2s 0 0 0.00000 0 277 - 0.00000 - - 3s 0 0 0.00000 0 259 - 0.00000 - - 3s 0 2 0.00000 0 254 - 0.00000 - - 3s * 281 2 27 0.0000000 0.00000 0.0% 79.1 4s Cutting planes: Clique: 4 Zero half: 1 Explored 282 nodes (47823 simplex iterations) in 4.75 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 21:40:28 2012 Optimize a model with 2994 rows, 1206 columns and 9104 nonzeros Presolve time: 0.01s Presolved: 2994 rows, 1206 columns, 9104 nonzeros Variable types: 0 continuous, 1206 integer (1206 binary) Root relaxation: objective 0.000000e+00, 278 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 0 242 - 0.00000 - - 0s 0 0 0.00000 0 242 - 0.00000 - - 0s 0 0 0.00000 0 307 - 0.00000 - - 0s 0 0 0.00000 0 363 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 336 - 0.00000 - - 2s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 341 - 0.00000 - - 3s 0 0 0.00000 0 341 - 0.00000 - - 3s 0 2 0.00000 0 341 - 0.00000 - - 4s 26 2 0.00000 5 342 - 0.00000 - 360 5s Cutting planes: Clique: 12 Zero half: 29 Explored 29 nodes (34673 simplex iterations) in 5.09 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