current bounds on the number of colors: 0 -- 114 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:18 2012 Optimize a model with 36252 rows, 7132 columns and 114912 nonzeros Presolve time: 0.15s Presolved: 36252 rows, 7132 columns, 114912 nonzeros Variable types: 0 continuous, 7132 integer (7132 binary) Root relaxation: objective 0.000000e+00, 297 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 (657 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:19 2012 Optimize a model with 17866 rows, 3826 columns and 56448 nonzeros Presolve time: 0.08s Presolved: 17866 rows, 3826 columns, 56448 nonzeros Variable types: 0 continuous, 3826 integer (3826 binary) Root relaxation: objective 0.000000e+00, 272 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 (503 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 20:14:19 2012 Optimize a model with 8990 rows, 2230 columns and 28224 nonzeros Presolve time: 0.03s Presolved: 8990 rows, 2230 columns, 28224 nonzeros Variable types: 0 continuous, 2230 integer (2230 binary) Root relaxation: objective 0.000000e+00, 233 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 (436 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 20:14:20 2012 Optimize a model with 4552 rows, 1432 columns and 14112 nonzeros Presolve time: 0.01s Presolved: 4552 rows, 1432 columns, 14112 nonzeros Variable types: 0 continuous, 1432 integer (1432 binary) Root relaxation: objective 0.000000e+00, 251 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 (545 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 20:14:20 2012 Optimize a model with 2016 rows, 976 columns and 6048 nonzeros Presolve time: 0.00s Presolved: 2016 rows, 976 columns, 6048 nonzeros Variable types: 0 continuous, 976 integer (976 binary) Root relaxation: objective 0.000000e+00, 258 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 0 176 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3864 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:14:20 2012 Optimize a model with 3284 rows, 1204 columns and 10080 nonzeros Presolve time: 0.01s Presolved: 3284 rows, 1204 columns, 10080 nonzeros Variable types: 0 continuous, 1204 integer (1204 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 0 167 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 221 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 0s 0 0 0.00000 0 150 - 0.00000 - - 1s 0 0 0.00000 0 156 - 0.00000 - - 1s 0 0 0.00000 0 44 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Zero half: 3 Explored 0 nodes (17637 simplex iterations) in 1.72 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 20:14:22 2012 Optimize a model with 2650 rows, 1090 columns and 8064 nonzeros Presolve time: 0.01s Presolved: 2650 rows, 1090 columns, 8064 nonzeros Variable types: 0 continuous, 1090 integer (1090 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 179 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 209 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 0 0.00000 0 283 - 0.00000 - - 2s 0 0 0.00000 0 279 - 0.00000 - - 2s 0 0 0.00000 0 303 - 0.00000 - - 2s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 2 0.00000 0 300 - 0.00000 - - 3s 130 11 0.00000 8 274 - 0.00000 - 170 5s Cutting planes: Clique: 16 Zero half: 48 Explored 202 nodes (55416 simplex iterations) in 5.75 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