current bounds on the number of colors: 0 -- 119 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:53:56 2012 Optimize a model with 42658 rows, 7742 columns and 134638 nonzeros Presolve time: 0.16s Presolved: 42658 rows, 7742 columns, 134638 nonzeros Variable types: 0 continuous, 7742 integer (7742 binary) Root relaxation: objective 0.000000e+00, 288 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 (690 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 20:53:56 2012 Optimize a model with 21028 rows, 4172 columns and 66178 nonzeros Presolve time: 0.09s Presolved: 21028 rows, 4172 columns, 66178 nonzeros Variable types: 0 continuous, 4172 integer (4172 binary) Root relaxation: objective 0.000000e+00, 279 iterations, 0.02 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 (535 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 20:53:57 2012 Optimize a model with 10213 rows, 2387 columns and 31948 nonzeros Presolve time: 0.03s Presolved: 10213 rows, 2387 columns, 31948 nonzeros Variable types: 0 continuous, 2387 integer (2387 binary) Root relaxation: objective 0.000000e+00, 240 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 (487 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 20:53:57 2012 Optimize a model with 5166 rows, 1554 columns and 15974 nonzeros Presolve time: 0.01s Presolved: 5166 rows, 1554 columns, 15974 nonzeros Variable types: 0 continuous, 1554 integer (1554 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 0.00000 0 88 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1516 simplex iterations) in 0.07 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 20:53:57 2012 Optimize a model with 2282 rows, 1078 columns and 6846 nonzeros Presolve time: 0.01s Presolved: 2282 rows, 1078 columns, 6846 nonzeros Variable types: 0 continuous, 1078 integer (1078 binary) Root relaxation: objective 0.000000e+00, 269 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3203 simplex iterations) in 0.37 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 20:53:58 2012 Optimize a model with 3724 rows, 1316 columns and 11410 nonzeros Presolve time: 0.01s Presolved: 3724 rows, 1316 columns, 11410 nonzeros Variable types: 0 continuous, 1316 integer (1316 binary) Root relaxation: objective 0.000000e+00, 250 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 0 284 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 273 - 0.00000 - - 0s 0 0 0.00000 0 276 - 0.00000 - - 1s 0 0 0.00000 0 263 - 0.00000 - - 1s 0 0 0.00000 0 210 - 0.00000 - - 2s 0 0 0.00000 0 244 - 0.00000 - - 2s 0 0 0.00000 0 235 - 0.00000 - - 3s 0 2 0.00000 0 235 - 0.00000 - - 3s 187 87 0.00000 32 178 - 0.00000 - 112 5s 607 222 0.00000 5 241 - 0.00000 - 85.4 10s 632 237 0.00000 19 252 - 0.00000 - 130 15s * 1047 73 37 0.0000000 0.00000 0.0% 138 19s Cutting planes: Clique: 2 Zero half: 4 Explored 1048 nodes (168418 simplex iterations) in 19.24 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:54:17 2012 Optimize a model with 3003 rows, 1197 columns and 9128 nonzeros Presolve time: 0.01s Presolved: 3003 rows, 1197 columns, 9128 nonzeros Variable types: 0 continuous, 1197 integer (1197 binary) Root relaxation: objective 0.000000e+00, 271 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 0 236 - 0.00000 - - 0s 0 0 0.00000 0 140 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 1s 0 0 0.00000 0 334 - 0.00000 - - 2s 0 0 0.00000 0 340 - 0.00000 - - 3s 0 0 0.00000 0 335 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 0 0.00000 0 347 - 0.00000 - - 4s 0 0 0.00000 0 347 - 0.00000 - - 4s 0 2 0.00000 0 347 - 0.00000 - - 5s Cutting planes: Clique: 10 Zero half: 26 Explored 23 nodes (33026 simplex iterations) in 6.09 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