current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:37 2012 Optimize a model with 35449 rows, 6959 columns and 112336 nonzeros Presolve time: 0.14s Presolved: 35449 rows, 6959 columns, 112336 nonzeros Variable types: 0 continuous, 6959 integer (6959 binary) Root relaxation: objective 0.000000e+00, 266 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 (515 simplex iterations) in 0.23 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 20:11:37 2012 Optimize a model with 17781 rows, 3795 columns and 56168 nonzeros Presolve time: 0.08s Presolved: 17781 rows, 3795 columns, 56168 nonzeros Variable types: 0 continuous, 3795 integer (3795 binary) Root relaxation: objective 0.000000e+00, 284 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 (510 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 20:11:38 2012 Optimize a model with 8947 rows, 2213 columns and 28084 nonzeros Presolve time: 0.03s Presolved: 8947 rows, 2213 columns, 28084 nonzeros Variable types: 0 continuous, 2213 integer (2213 binary) Root relaxation: objective 0.000000e+00, 228 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 (623 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 20:11:38 2012 Optimize a model with 4530 rows, 1422 columns and 14042 nonzeros Presolve time: 0.01s Presolved: 4530 rows, 1422 columns, 14042 nonzeros Variable types: 0 continuous, 1422 integer (1422 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (548 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 20:11:38 2012 Optimize a model with 2006 rows, 970 columns and 6018 nonzeros Presolve time: 0.00s Presolved: 2006 rows, 970 columns, 6018 nonzeros Variable types: 0 continuous, 970 integer (970 binary) Root relaxation: objective 0.000000e+00, 257 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3552 simplex iterations) in 0.36 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 20:11:38 2012 Optimize a model with 3268 rows, 1196 columns and 10030 nonzeros Presolve time: 0.01s Presolved: 3268 rows, 1196 columns, 10030 nonzeros Variable types: 0 continuous, 1196 integer (1196 binary) Root relaxation: objective 0.000000e+00, 242 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 0 204 - 0.00000 - - 0s 0 0 0.00000 0 170 - 0.00000 - - 0s 0 0 0.00000 0 193 - 0.00000 - - 0s 0 0 0.00000 0 243 - 0.00000 - - 0s 0 0 0.00000 0 272 - 0.00000 - - 0s 0 0 0.00000 0 253 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 4 Zero half: 7 Explored 0 nodes (12838 simplex iterations) in 1.21 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 20:11:40 2012 Optimize a model with 2637 rows, 1083 columns and 8024 nonzeros Presolve time: 0.01s Presolved: 2637 rows, 1083 columns, 8024 nonzeros Variable types: 0 continuous, 1083 integer (1083 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 0 156 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 0s 0 0 0.00000 0 319 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 1s 0 0 0.00000 0 314 - 0.00000 - - 1s 0 0 0.00000 0 311 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 301 - 0.00000 - - 2s 0 0 0.00000 0 297 - 0.00000 - - 3s 0 0 0.00000 0 291 - 0.00000 - - 3s 0 0 0.00000 0 289 - 0.00000 - - 3s 0 0 0.00000 0 296 - 0.00000 - - 4s 0 0 0.00000 0 294 - 0.00000 - - 4s 0 0 0.00000 0 301 - 0.00000 - - 5s 0 0 0.00000 0 301 - 0.00000 - - 5s 0 2 0.00000 0 301 - 0.00000 - - 5s Cutting planes: Clique: 28 Zero half: 27 Explored 55 nodes (48690 simplex iterations) in 6.88 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