current bounds on the number of colors: 0 -- 115 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:03 2012 Optimize a model with 37507 rows, 7211 columns and 118731 nonzeros Presolve time: 0.15s Presolved: 37507 rows, 7211 columns, 118731 nonzeros Variable types: 0 continuous, 7211 integer (7211 binary) Root relaxation: objective 0.000000e+00, 294 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 (547 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 20:21:03 2012 Optimize a model with 18483 rows, 3876 columns and 58324 nonzeros Presolve time: 0.08s Presolved: 18483 rows, 3876 columns, 58324 nonzeros Variable types: 0 continuous, 3876 integer (3876 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 (537 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 20:21:04 2012 Optimize a model with 9299 rows, 2266 columns and 29162 nonzeros Presolve time: 0.03s Presolved: 9299 rows, 2266 columns, 29162 nonzeros Variable types: 0 continuous, 2266 integer (2266 binary) Root relaxation: objective 0.000000e+00, 235 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 (468 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 20:21:04 2012 Optimize a model with 4707 rows, 1461 columns and 14581 nonzeros Presolve time: 0.01s Presolved: 4707 rows, 1461 columns, 14581 nonzeros Variable types: 0 continuous, 1461 integer (1461 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (521 simplex iterations) in 0.03 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 20:21:04 2012 Optimize a model with 2083 rows, 1001 columns and 6249 nonzeros Presolve time: 0.01s Presolved: 2083 rows, 1001 columns, 6249 nonzeros Variable types: 0 continuous, 1001 integer (1001 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 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3989 simplex iterations) in 0.35 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 20:21:04 2012 Optimize a model with 3395 rows, 1231 columns and 10415 nonzeros Presolve time: 0.01s Presolved: 3395 rows, 1231 columns, 10415 nonzeros Variable types: 0 continuous, 1231 integer (1231 binary) Root relaxation: objective 0.000000e+00, 239 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 243 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (5025 simplex iterations) in 0.44 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 20:21:05 2012 Optimize a model with 2739 rows, 1116 columns and 8332 nonzeros Presolve time: 0.01s Presolved: 2739 rows, 1116 columns, 8332 nonzeros Variable types: 0 continuous, 1116 integer (1116 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 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 0.00000 0 353 - 0.00000 - - 0s 0 0 0.00000 0 227 - 0.00000 - - 1s 0 0 0.00000 0 281 - 0.00000 - - 1s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 319 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 315 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 2 0.00000 0 267 - 0.00000 - - 4s Cutting planes: Gomory: 1 Clique: 5 Zero half: 25 Explored 29 nodes (34675 simplex iterations) in 4.94 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