current bounds on the number of colors: 0 -- 116 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:29:10 2012 Optimize a model with 37410 rows, 7371 columns and 118610 nonzeros Presolve time: 0.15s Presolved: 37410 rows, 7371 columns, 118610 nonzeros Variable types: 0 continuous, 7371 integer (7371 binary) Root relaxation: objective 0.000000e+00, 306 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 (555 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 -- 58 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:29:11 2012 Optimize a model with 18763 rows, 4007 columns and 59305 nonzeros Presolve time: 0.08s Presolved: 18763 rows, 4007 columns, 59305 nonzeros Variable types: 0 continuous, 4007 integer (4007 binary) Root relaxation: objective 0.000000e+00, 281 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 (523 simplex iterations) in 0.12 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 20:29:11 2012 Optimize a model with 9118 rows, 2267 columns and 28630 nonzeros Presolve time: 0.03s Presolved: 9118 rows, 2267 columns, 28630 nonzeros Variable types: 0 continuous, 2267 integer (2267 binary) Root relaxation: objective 0.000000e+00, 238 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 (461 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 20:29:11 2012 Optimize a model with 4617 rows, 1455 columns and 14315 nonzeros Presolve time: 0.01s Presolved: 4617 rows, 1455 columns, 14315 nonzeros Variable types: 0 continuous, 1455 integer (1455 binary) Root relaxation: objective 0.000000e+00, 261 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 (924 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:29:11 2012 Optimize a model with 2045 rows, 991 columns and 6135 nonzeros Presolve time: 0.00s Presolved: 2045 rows, 991 columns, 6135 nonzeros Variable types: 0 continuous, 991 integer (991 binary) Root relaxation: objective 0.000000e+00, 252 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 0 232 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3282 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 20:29:12 2012 Optimize a model with 3331 rows, 1223 columns and 10225 nonzeros Presolve time: 0.01s Presolved: 3331 rows, 1223 columns, 10225 nonzeros Variable types: 0 continuous, 1223 integer (1223 binary) Root relaxation: objective 0.000000e+00, 264 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 241 - 0.00000 - - 0s 0 0 0.00000 0 132 - 0.00000 - - 0s 0 0 0.00000 0 247 - 0.00000 - - 0s 0 0 0.00000 0 114 - 0.00000 - - 1s 0 0 0.00000 0 152 - 0.00000 - - 1s 0 0 0.00000 0 78 - 0.00000 - - 1s 0 0 0.00000 0 80 - 0.00000 - - 1s 0 0 0.00000 0 84 - 0.00000 - - 1s 0 0 0.00000 0 86 - 0.00000 - - 1s 0 0 0.00000 0 86 - 0.00000 - - 2s H 0 0 0.0000000 0.00000 0.0% - 2s Cutting planes: Zero half: 3 Explored 0 nodes (23514 simplex iterations) in 2.37 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 20:29:14 2012 Optimize a model with 2688 rows, 1107 columns and 8180 nonzeros Presolve time: 0.01s Presolved: 2688 rows, 1107 columns, 8180 nonzeros Variable types: 0 continuous, 1107 integer (1107 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 219 - 0.00000 - - 0s 0 0 0.00000 0 343 - 0.00000 - - 0s 0 0 0.00000 0 341 - 0.00000 - - 1s 0 0 0.00000 0 354 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 323 - 0.00000 - - 2s 0 0 0.00000 0 329 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 321 - 0.00000 - - 3s 0 0 0.00000 0 317 - 0.00000 - - 4s 0 0 0.00000 0 328 - 0.00000 - - 4s 0 0 0.00000 0 329 - 0.00000 - - 5s 0 0 0.00000 0 329 - 0.00000 - - 5s 0 2 0.00000 0 329 - 0.00000 - - 5s Cutting planes: Clique: 4 Zero half: 17 Explored 17 nodes (33484 simplex iterations) in 6.24 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