current bounds on the number of colors: 0 -- 116 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:30:03 2012 Optimize a model with 38860 rows, 7396 columns and 122960 nonzeros Presolve time: 0.15s Presolved: 38860 rows, 7396 columns, 122960 nonzeros Variable types: 0 continuous, 7396 integer (7396 binary) Root relaxation: objective 0.000000e+00, 305 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 (662 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:30:03 2012 Optimize a model with 19488 rows, 4032 columns and 61480 nonzeros Presolve time: 0.08s Presolved: 19488 rows, 4032 columns, 61480 nonzeros Variable types: 0 continuous, 4032 integer (4032 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 (519 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 20:30:04 2012 Optimize a model with 9468 rows, 2292 columns and 29680 nonzeros Presolve time: 0.03s Presolved: 9468 rows, 2292 columns, 29680 nonzeros Variable types: 0 continuous, 2292 integer (2292 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 (473 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 20:30:04 2012 Optimize a model with 4792 rows, 1480 columns and 14840 nonzeros Presolve time: 0.01s Presolved: 4792 rows, 1480 columns, 14840 nonzeros Variable types: 0 continuous, 1480 integer (1480 binary) Root relaxation: objective 0.000000e+00, 254 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 (1071 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 20:30:04 2012 Optimize a model with 2120 rows, 1016 columns and 6360 nonzeros Presolve time: 0.01s Presolved: 2120 rows, 1016 columns, 6360 nonzeros Variable types: 0 continuous, 1016 integer (1016 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 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 259 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3768 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 20:30:05 2012 Optimize a model with 3456 rows, 1248 columns and 10600 nonzeros Presolve time: 0.01s Presolved: 3456 rows, 1248 columns, 10600 nonzeros Variable types: 0 continuous, 1248 integer (1248 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 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 134 - 0.00000 - - 0s 0 0 0.00000 0 189 - 0.00000 - - 0s 0 0 0.00000 0 278 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 1s 0 0 0.00000 0 148 - 0.00000 - - 1s 0 0 0.00000 0 166 - 0.00000 - - 1s 0 0 0.00000 0 289 - 0.00000 - - 2s 0 0 0.00000 0 243 - 0.00000 - - 2s 0 0 0.00000 0 257 - 0.00000 - - 2s 0 0 0.00000 0 257 - 0.00000 - - 2s 0 2 0.00000 0 257 - 0.00000 - - 3s 618 99 infeasible 39 - 0.00000 - 62.6 5s * 692 2 39 0.0000000 0.00000 0.0% 60.8 5s Cutting planes: Clique: 5 Zero half: 28 Explored 693 nodes (69234 simplex iterations) in 5.13 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:30:10 2012 Optimize a model with 2788 rows, 1132 columns and 8480 nonzeros Presolve time: 0.01s Presolved: 2788 rows, 1132 columns, 8480 nonzeros Variable types: 0 continuous, 1132 integer (1132 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 0 230 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 341 - 0.00000 - - 0s 0 0 0.00000 0 335 - 0.00000 - - 1s 0 0 0.00000 0 333 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 1s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 333 - 0.00000 - - 2s 0 0 0.00000 0 329 - 0.00000 - - 3s 0 0 0.00000 0 335 - 0.00000 - - 3s 0 0 0.00000 0 337 - 0.00000 - - 4s 0 0 0.00000 0 337 - 0.00000 - - 4s 0 2 0.00000 0 337 - 0.00000 - - 5s Cutting planes: Clique: 14 Zero half: 24 Explored 31 nodes (31379 simplex iterations) in 5.74 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