current bounds on the number of colors: 0 -- 110 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:57 2012 Optimize a model with 33165 rows, 6651 columns and 105215 nonzeros Presolve time: 0.15s Presolved: 33165 rows, 6651 columns, 105215 nonzeros Variable types: 0 continuous, 6651 integer (6651 binary) Root relaxation: objective 0.000000e+00, 436 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 (726 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:57 2012 Optimize a model with 16337 rows, 3571 columns and 51651 nonzeros Presolve time: 0.07s Presolved: 16337 rows, 3571 columns, 51651 nonzeros Variable types: 0 continuous, 3571 integer (3571 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 (645 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:58 2012 Optimize a model with 7923 rows, 2031 columns and 24869 nonzeros Presolve time: 0.02s Presolved: 7923 rows, 2031 columns, 24869 nonzeros Variable types: 0 continuous, 2031 integer (2031 binary) Root relaxation: objective 0.000000e+00, 224 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 (410 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:58 2012 Optimize a model with 3716 rows, 1261 columns and 11478 nonzeros Presolve time: 0.01s Presolved: 3716 rows, 1261 columns, 11478 nonzeros Variable types: 0 continuous, 1261 integer (1261 binary) Root relaxation: objective 0.000000e+00, 244 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 (1617 simplex iterations) in 0.09 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:58 2012 Optimize a model with 1913 rows, 931 columns and 5739 nonzeros Presolve time: 0.00s Presolved: 1913 rows, 931 columns, 5739 nonzeros Variable types: 0 continuous, 931 integer (931 binary) Root relaxation: objective 0.000000e+00, 253 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 0 218 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3161 simplex iterations) in 0.33 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:03:58 2012 Optimize a model with 2514 rows, 1041 columns and 7652 nonzeros Presolve time: 0.01s Presolved: 2514 rows, 1041 columns, 7652 nonzeros Variable types: 0 continuous, 1041 integer (1041 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 0 216 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 299 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 0 0.00000 0 303 - 0.00000 - - 1s 0 0 0.00000 0 295 - 0.00000 - - 2s 0 0 0.00000 0 278 - 0.00000 - - 2s 0 0 0.00000 0 286 - 0.00000 - - 2s 0 0 0.00000 0 285 - 0.00000 - - 3s 0 0 0.00000 0 307 - 0.00000 - - 3s 0 0 0.00000 0 293 - 0.00000 - - 3s 0 2 0.00000 0 290 - 0.00000 - - 4s Cutting planes: Clique: 11 Zero half: 25 Explored 49 nodes (34732 simplex iterations) in 4.77 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:04:03 2012 Optimize a model with 3115 rows, 1151 columns and 9565 nonzeros Presolve time: 0.01s Presolved: 3115 rows, 1151 columns, 9565 nonzeros Variable types: 0 continuous, 1151 integer (1151 binary) Root relaxation: objective 0.000000e+00, 238 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 0 186 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 0s 0 0 0.00000 0 259 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Clique: 6 Zero half: 7 Explored 0 nodes (6086 simplex iterations) in 0.55 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% optimal solution found: number of colors: 5