current bounds on the number of colors: 0 -- 112 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:49 2012 Optimize a model with 36008 rows, 6913 columns and 113960 nonzeros Presolve time: 0.14s Presolved: 36008 rows, 6913 columns, 113960 nonzeros Variable types: 0 continuous, 6913 integer (6913 binary) Root relaxation: objective 0.000000e+00, 293 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 (694 simplex iterations) in 0.26 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:50 2012 Optimize a model with 18060 rows, 3777 columns and 56980 nonzeros Presolve time: 0.08s Presolved: 18060 rows, 3777 columns, 56980 nonzeros Variable types: 0 continuous, 3777 integer (3777 binary) Root relaxation: objective 0.000000e+00, 286 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 (536 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 20:08:50 2012 Optimize a model with 9086 rows, 2209 columns and 28490 nonzeros Presolve time: 0.03s Presolved: 9086 rows, 2209 columns, 28490 nonzeros Variable types: 0 continuous, 2209 integer (2209 binary) Root relaxation: objective 0.000000e+00, 227 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 (433 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 20:08:50 2012 Optimize a model with 4599 rows, 1425 columns and 14245 nonzeros Presolve time: 0.01s Presolved: 4599 rows, 1425 columns, 14245 nonzeros Variable types: 0 continuous, 1425 integer (1425 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (819 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 20:08:51 2012 Optimize a model with 2035 rows, 977 columns and 6105 nonzeros Presolve time: 0.00s Presolved: 2035 rows, 977 columns, 6105 nonzeros Variable types: 0 continuous, 977 integer (977 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2800 simplex iterations) in 0.27 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 20:08:51 2012 Optimize a model with 3317 rows, 1201 columns and 10175 nonzeros Presolve time: 0.01s Presolved: 3317 rows, 1201 columns, 10175 nonzeros Variable types: 0 continuous, 1201 integer (1201 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 0 212 - 0.00000 - - 0s 0 0 0.00000 0 170 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 280 - 0.00000 - - 0s 0 0 0.00000 0 133 - 0.00000 - - 0s 0 0 0.00000 0 141 - 0.00000 - - 1s 0 0 0.00000 0 107 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 2 Zero half: 32 Explored 0 nodes (16207 simplex iterations) in 1.43 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 20:08:52 2012 Optimize a model with 2676 rows, 1089 columns and 8140 nonzeros Presolve time: 0.01s Presolved: 2676 rows, 1089 columns, 8140 nonzeros Variable types: 0 continuous, 1089 integer (1089 binary) Root relaxation: objective 0.000000e+00, 241 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 301 - 0.00000 - - 1s 0 0 0.00000 0 297 - 0.00000 - - 2s 0 0 0.00000 0 294 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 2s 0 0 0.00000 0 305 - 0.00000 - - 3s 0 0 0.00000 0 303 - 0.00000 - - 3s 0 0 0.00000 0 304 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 4s 0 2 0.00000 0 309 - 0.00000 - - 5s Cutting planes: Clique: 15 Zero half: 32 Explored 67 nodes (42955 simplex iterations) in 6.28 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