current bounds on the number of colors: 0 -- 117 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:36:32 2012 Optimize a model with 39499 rows, 7465 columns and 124932 nonzeros Presolve time: 0.15s Presolved: 39499 rows, 7465 columns, 124932 nonzeros Variable types: 0 continuous, 7465 integer (7465 binary) Root relaxation: objective 0.000000e+00, 300 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 (582 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 20:36:33 2012 Optimize a model with 19808 rows, 4072 columns and 62466 nonzeros Presolve time: 0.09s Presolved: 19808 rows, 4072 columns, 62466 nonzeros Variable types: 0 continuous, 4072 integer (4072 binary) Root relaxation: objective 0.000000e+00, 283 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 (533 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 20:36:33 2012 Optimize a model with 9623 rows, 2317 columns and 30156 nonzeros Presolve time: 0.03s Presolved: 9623 rows, 2317 columns, 30156 nonzeros Variable types: 0 continuous, 2317 integer (2317 binary) Root relaxation: objective 0.000000e+00, 245 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 (469 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 20:36:34 2012 Optimize a model with 4870 rows, 1498 columns and 15078 nonzeros Presolve time: 0.01s Presolved: 4870 rows, 1498 columns, 15078 nonzeros Variable types: 0 continuous, 1498 integer (1498 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (950 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 20:36:34 2012 Optimize a model with 2154 rows, 1030 columns and 6462 nonzeros Presolve time: 0.01s Presolved: 2154 rows, 1030 columns, 6462 nonzeros Variable types: 0 continuous, 1030 integer (1030 binary) Root relaxation: objective 0.000000e+00, 257 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 0 232 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3347 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 20:36:34 2012 Optimize a model with 3512 rows, 1264 columns and 10770 nonzeros Presolve time: 0.01s Presolved: 3512 rows, 1264 columns, 10770 nonzeros Variable types: 0 continuous, 1264 integer (1264 binary) Root relaxation: objective 0.000000e+00, 243 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 0s 0 0 0.00000 0 275 - 0.00000 - - 1s 0 0 0.00000 0 275 - 0.00000 - - 1s 0 2 0.00000 0 275 - 0.00000 - - 1s 605 163 0.00000 22 253 - 0.00000 - 63.2 5s 612 167 0.00000 17 253 - 0.00000 - 62.5 10s 621 173 0.00000 25 228 - 0.00000 - 61.6 15s * 901 78 34 0.0000000 0.00000 0.0% 122 18s Cutting planes: Clique: 2 Zero half: 16 Explored 902 nodes (123541 simplex iterations) in 18.99 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 20:36:53 2012 Optimize a model with 2833 rows, 1147 columns and 8616 nonzeros Presolve time: 0.01s Presolved: 2833 rows, 1147 columns, 8616 nonzeros Variable types: 0 continuous, 1147 integer (1147 binary) Root relaxation: objective 0.000000e+00, 257 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 0 206 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 351 - 0.00000 - - 1s 0 0 0.00000 0 337 - 0.00000 - - 1s 0 0 0.00000 0 330 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 318 - 0.00000 - - 3s 0 0 0.00000 0 320 - 0.00000 - - 4s 0 0 0.00000 0 319 - 0.00000 - - 4s 0 2 0.00000 0 319 - 0.00000 - - 4s 3 5 0.00000 3 322 - 0.00000 - 773 5s Cutting planes: Clique: 21 Zero half: 11 Explored 41 nodes (34019 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