current bounds on the number of colors: 0 -- 116 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:29:50 2012 Optimize a model with 37526 rows, 7373 columns and 118958 nonzeros Presolve time: 0.15s Presolved: 37526 rows, 7373 columns, 118958 nonzeros Variable types: 0 continuous, 7373 integer (7373 binary) Root relaxation: objective 0.000000e+00, 279 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 (559 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 20:29:50 2012 Optimize a model with 18821 rows, 4009 columns and 59479 nonzeros Presolve time: 0.08s Presolved: 18821 rows, 4009 columns, 59479 nonzeros Variable types: 0 continuous, 4009 integer (4009 binary) Root relaxation: objective 0.000000e+00, 327 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 (595 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 20:29:51 2012 Optimize a model with 9146 rows, 2269 columns and 28714 nonzeros Presolve time: 0.03s Presolved: 9146 rows, 2269 columns, 28714 nonzeros Variable types: 0 continuous, 2269 integer (2269 binary) Root relaxation: objective 0.000000e+00, 232 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 (456 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 20:29:51 2012 Optimize a model with 4631 rows, 1457 columns and 14357 nonzeros Presolve time: 0.01s Presolved: 4631 rows, 1457 columns, 14357 nonzeros Variable types: 0 continuous, 1457 integer (1457 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 (529 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 20:29:51 2012 Optimize a model with 2051 rows, 993 columns and 6153 nonzeros Presolve time: 0.00s Presolved: 2051 rows, 993 columns, 6153 nonzeros Variable types: 0 continuous, 993 integer (993 binary) Root relaxation: objective 0.000000e+00, 265 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 0 212 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4422 simplex iterations) in 0.43 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 20:29:52 2012 Optimize a model with 3341 rows, 1225 columns and 10255 nonzeros Presolve time: 0.01s Presolved: 3341 rows, 1225 columns, 10255 nonzeros Variable types: 0 continuous, 1225 integer (1225 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 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 156 - 0.00000 - - 0s 0 0 0.00000 0 293 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 0s 0 0 0.00000 0 280 - 0.00000 - - 1s 0 0 0.00000 0 135 - 0.00000 - - 1s 0 0 0.00000 0 214 - 0.00000 - - 1s 0 0 0.00000 0 196 - 0.00000 - - 2s 0 0 0.00000 0 290 - 0.00000 - - 2s 0 0 0.00000 0 68 - 0.00000 - - 2s 0 2 0.00000 0 68 - 0.00000 - - 3s * 84 3 30 0.0000000 0.00000 0.0% 108 3s Explored 85 nodes (34312 simplex iterations) in 3.45 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 20:29:55 2012 Optimize a model with 2696 rows, 1109 columns and 8204 nonzeros Presolve time: 0.01s Presolved: 2696 rows, 1109 columns, 8204 nonzeros Variable types: 0 continuous, 1109 integer (1109 binary) Root relaxation: objective 0.000000e+00, 256 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 0 152 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 327 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 329 - 0.00000 - - 1s 0 0 0.00000 0 323 - 0.00000 - - 2s 0 0 0.00000 0 322 - 0.00000 - - 2s 0 0 0.00000 0 323 - 0.00000 - - 3s 0 0 0.00000 0 323 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 315 - 0.00000 - - 4s 0 0 0.00000 0 313 - 0.00000 - - 4s 0 0 0.00000 0 327 - 0.00000 - - 5s 0 0 0.00000 0 327 - 0.00000 - - 5s 0 2 0.00000 0 327 - 0.00000 - - 5s Cutting planes: Clique: 8 Zero half: 35 Explored 51 nodes (43331 simplex iterations) in 6.86 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