current bounds on the number of colors: 0 -- 122 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:38:43 2012 Optimize a model with 44896 rows, 8176 columns and 141764 nonzeros Presolve time: 0.15s Presolved: 44896 rows, 8176 columns, 141764 nonzeros Variable types: 0 continuous, 8176 integer (8176 binary) Root relaxation: objective 0.000000e+00, 304 iterations, 0.05 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 (588 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 -- 61 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:38:43 2012 Optimize a model with 22142 rows, 4394 columns and 69720 nonzeros Presolve time: 0.10s Presolved: 22142 rows, 4394 columns, 69720 nonzeros Variable types: 0 continuous, 4394 integer (4394 binary) Root relaxation: objective 0.000000e+00, 293 iterations, 0.02 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 (550 simplex iterations) in 0.15 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 -- 30 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:38:44 2012 Optimize a model with 11132 rows, 2564 columns and 34860 nonzeros Presolve time: 0.04s Presolved: 11132 rows, 2564 columns, 34860 nonzeros Variable types: 0 continuous, 2564 integer (2564 binary) Root relaxation: objective 0.000000e+00, 252 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 (521 simplex iterations) in 0.06 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:38:44 2012 Optimize a model with 5260 rows, 1588 columns and 16268 nonzeros Presolve time: 0.01s Presolved: 5260 rows, 1588 columns, 16268 nonzeros Variable types: 0 continuous, 1588 integer (1588 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (659 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 21:38:44 2012 Optimize a model with 2324 rows, 1100 columns and 6972 nonzeros Presolve time: 0.01s Presolved: 2324 rows, 1100 columns, 6972 nonzeros Variable types: 0 continuous, 1100 integer (1100 binary) Root relaxation: objective 0.000000e+00, 262 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4914 simplex iterations) in 0.46 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 21:38:45 2012 Optimize a model with 3792 rows, 1344 columns and 11620 nonzeros Presolve time: 0.01s Presolved: 3792 rows, 1344 columns, 11620 nonzeros Variable types: 0 continuous, 1344 integer (1344 binary) Root relaxation: objective 0.000000e+00, 267 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 0 154 - 0.00000 - - 0s 0 0 0.00000 0 167 - 0.00000 - - 0s 0 0 0.00000 0 300 - 0.00000 - - 0s 0 0 0.00000 0 192 - 0.00000 - - 1s 0 0 0.00000 0 227 - 0.00000 - - 1s 0 0 0.00000 0 175 - 0.00000 - - 2s 0 0 0.00000 0 273 - 0.00000 - - 2s 0 0 0.00000 0 302 - 0.00000 - - 2s 0 0 0.00000 0 249 - 0.00000 - - 3s 0 2 0.00000 0 249 - 0.00000 - - 3s 375 35 0.00000 25 144 - 0.00000 - 78.6 5s 609 82 0.00000 7 181 - 0.00000 - 74.5 10s 621 90 0.00000 19 285 - 0.00000 - 130 15s * 693 57 30 0.0000000 0.00000 0.0% 134 16s Cutting planes: Clique: 1 Zero half: 1 Explored 694 nodes (121391 simplex iterations) in 16.66 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 21:39:01 2012 Optimize a model with 3058 rows, 1222 columns and 9296 nonzeros Presolve time: 0.01s Presolved: 3058 rows, 1222 columns, 9296 nonzeros Variable types: 0 continuous, 1222 integer (1222 binary) Root relaxation: objective 0.000000e+00, 259 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 0 240 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 345 - 0.00000 - - 1s 0 0 0.00000 0 346 - 0.00000 - - 1s 0 0 0.00000 0 340 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 2s 0 0 0.00000 0 331 - 0.00000 - - 3s 0 0 0.00000 0 337 - 0.00000 - - 3s 0 0 0.00000 0 352 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 2 0.00000 0 334 - 0.00000 - - 4s 1 4 0.00000 1 359 - 0.00000 - 3045 5s Cutting planes: Clique: 21 Zero half: 15 Explored 47 nodes (38861 simplex iterations) in 6.11 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