current bounds on the number of colors: 0 -- 114 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:28 2012 Optimize a model with 36822 rows, 7142 columns and 116622 nonzeros Presolve time: 0.15s Presolved: 36822 rows, 7142 columns, 116622 nonzeros Variable types: 0 continuous, 7142 integer (7142 binary) Root relaxation: objective 0.000000e+00, 287 iterations, 0.04 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 (536 simplex iterations) in 0.24 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:29 2012 Optimize a model with 18146 rows, 3836 columns and 57288 nonzeros Presolve time: 0.08s Presolved: 18146 rows, 3836 columns, 57288 nonzeros Variable types: 0 continuous, 3836 integer (3836 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 (465 simplex iterations) in 0.11 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: 0 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:29 2012 Optimize a model with 9130 rows, 2240 columns and 28644 nonzeros Presolve time: 0.03s Presolved: 9130 rows, 2240 columns, 28644 nonzeros Variable types: 0 continuous, 2240 integer (2240 binary) Root relaxation: objective 0.000000e+00, 239 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 (445 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 20:14:30 2012 Optimize a model with 4622 rows, 1442 columns and 14322 nonzeros Presolve time: 0.01s Presolved: 4622 rows, 1442 columns, 14322 nonzeros Variable types: 0 continuous, 1442 integer (1442 binary) Root relaxation: objective 0.000000e+00, 238 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 (826 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 20:14:30 2012 Optimize a model with 2046 rows, 986 columns and 6138 nonzeros Presolve time: 0.00s Presolved: 2046 rows, 986 columns, 6138 nonzeros Variable types: 0 continuous, 986 integer (986 binary) Root relaxation: objective 0.000000e+00, 240 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 0 228 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3079 simplex iterations) in 0.34 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 20:14:30 2012 Optimize a model with 3334 rows, 1214 columns and 10230 nonzeros Presolve time: 0.01s Presolved: 3334 rows, 1214 columns, 10230 nonzeros Variable types: 0 continuous, 1214 integer (1214 binary) Root relaxation: objective 0.000000e+00, 237 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 0 243 - 0.00000 - - 0s 0 0 0.00000 0 219 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 0s 0 0 0.00000 0 187 - 0.00000 - - 1s 0 0 0.00000 0 179 - 0.00000 - - 1s 0 0 0.00000 0 160 - 0.00000 - - 1s 0 0 0.00000 0 147 - 0.00000 - - 1s 0 0 0.00000 0 172 - 0.00000 - - 2s 0 0 0.00000 0 191 - 0.00000 - - 2s 0 0 0.00000 0 191 - 0.00000 - - 2s 0 2 0.00000 0 191 - 0.00000 - - 2s * 282 3 30 0.0000000 0.00000 0.0% 56.0 3s Cutting planes: Clique: 5 Zero half: 6 Explored 283 nodes (41949 simplex iterations) in 3.85 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 20:14:34 2012 Optimize a model with 2690 rows, 1100 columns and 8184 nonzeros Presolve time: 0.01s Presolved: 2690 rows, 1100 columns, 8184 nonzeros Variable types: 0 continuous, 1100 integer (1100 binary) Root relaxation: objective 0.000000e+00, 255 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 128 - 0.00000 - - 0s 0 0 0.00000 0 307 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 319 - 0.00000 - - 2s 0 0 0.00000 0 313 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 308 - 0.00000 - - 3s 0 0 0.00000 0 328 - 0.00000 - - 4s 0 0 0.00000 0 325 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 5s 0 2 0.00000 0 326 - 0.00000 - - 5s Cutting planes: Gomory: 1 Clique: 7 Zero half: 20 Explored 5 nodes (34145 simplex iterations) in 5.64 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