current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:44:20 2012 Optimize a model with 40887 rows, 7653 columns and 129269 nonzeros Presolve time: 0.15s Presolved: 40887 rows, 7653 columns, 129269 nonzeros Variable types: 0 continuous, 7653 integer (7653 binary) Root relaxation: objective 0.000000e+00, 302 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 (740 simplex iterations) in 0.29 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 20:44:21 2012 Optimize a model with 20157 rows, 4113 columns and 63539 nonzeros Presolve time: 0.09s Presolved: 20157 rows, 4113 columns, 63539 nonzeros Variable types: 0 continuous, 4113 integer (4113 binary) Root relaxation: objective 0.000000e+00, 275 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 (603 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 20:44:21 2012 Optimize a model with 9792 rows, 2343 columns and 30674 nonzeros Presolve time: 0.03s Presolved: 9792 rows, 2343 columns, 30674 nonzeros Variable types: 0 continuous, 2343 integer (2343 binary) Root relaxation: objective 0.000000e+00, 236 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 (609 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 20:44:22 2012 Optimize a model with 4955 rows, 1517 columns and 15337 nonzeros Presolve time: 0.01s Presolved: 4955 rows, 1517 columns, 15337 nonzeros Variable types: 0 continuous, 1517 integer (1517 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (891 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 20:44:22 2012 Optimize a model with 2191 rows, 1045 columns and 6573 nonzeros Presolve time: 0.01s Presolved: 2191 rows, 1045 columns, 6573 nonzeros Variable types: 0 continuous, 1045 integer (1045 binary) Root relaxation: objective 0.000000e+00, 267 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 0 210 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4551 simplex iterations) in 0.49 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 20:44:22 2012 Optimize a model with 3573 rows, 1281 columns and 10955 nonzeros Presolve time: 0.01s Presolved: 3573 rows, 1281 columns, 10955 nonzeros Variable types: 0 continuous, 1281 integer (1281 binary) Root relaxation: objective 0.000000e+00, 247 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 175 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 0s 0 0 0.00000 0 148 - 0.00000 - - 1s 0 0 0.00000 0 171 - 0.00000 - - 1s 0 0 0.00000 0 154 - 0.00000 - - 1s 0 0 0.00000 0 195 - 0.00000 - - 1s 0 0 0.00000 0 133 - 0.00000 - - 2s 0 0 0.00000 0 144 - 0.00000 - - 2s 0 0 0.00000 0 175 - 0.00000 - - 2s 0 0 0.00000 0 175 - 0.00000 - - 3s 0 2 0.00000 0 175 - 0.00000 - - 3s 502 77 0.00000 20 188 - 0.00000 - 60.3 5s 709 86 0.00000 23 254 - 0.00000 - 57.1 10s * 999 3 36 0.0000000 0.00000 0.0% 103 13s Cutting planes: Zero half: 6 Explored 1000 nodes (132959 simplex iterations) in 13.82 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 20:44:36 2012 Optimize a model with 2882 rows, 1163 columns and 8764 nonzeros Presolve time: 0.01s Presolved: 2882 rows, 1163 columns, 8764 nonzeros Variable types: 0 continuous, 1163 integer (1163 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 335 - 0.00000 - - 1s 0 0 0.00000 0 322 - 0.00000 - - 1s 0 0 0.00000 0 317 - 0.00000 - - 2s 0 0 0.00000 0 323 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 2 0.00000 0 326 - 0.00000 - - 4s 37 3 0.00000 4 318 - 0.00000 - 231 5s Cutting planes: Clique: 16 Zero half: 15 Explored 71 nodes (37624 simplex iterations) in 5.52 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