current bounds on the number of colors: 0 -- 123 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:53:42 2012 Optimize a model with 44775 rows, 8235 columns and 141459 nonzeros Presolve time: 0.15s Presolved: 44775 rows, 8235 columns, 141459 nonzeros Variable types: 0 continuous, 8235 integer (8235 binary) Root relaxation: objective 0.000000e+00, 302 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 (675 simplex iterations) in 0.27 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 21:53:43 2012 Optimize a model with 22083 rows, 4422 columns and 69570 nonzeros Presolve time: 0.10s Presolved: 22083 rows, 4422 columns, 69570 nonzeros Variable types: 0 continuous, 4422 integer (4422 binary) Root relaxation: objective 0.000000e+00, 313 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 (590 simplex iterations) in 0.14 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 21:53:43 2012 Optimize a model with 11103 rows, 2577 columns and 34785 nonzeros Presolve time: 0.04s Presolved: 11103 rows, 2577 columns, 34785 nonzeros Variable types: 0 continuous, 2577 integer (2577 binary) Root relaxation: objective 0.000000e+00, 248 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 (508 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 21:53:43 2012 Optimize a model with 5247 rows, 1593 columns and 16233 nonzeros Presolve time: 0.01s Presolved: 5247 rows, 1593 columns, 16233 nonzeros Variable types: 0 continuous, 1593 integer (1593 binary) Root relaxation: objective 0.000000e+00, 254 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 (1064 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 21:53:43 2012 Optimize a model with 2319 rows, 1101 columns and 6957 nonzeros Presolve time: 0.01s Presolved: 2319 rows, 1101 columns, 6957 nonzeros Variable types: 0 continuous, 1101 integer (1101 binary) Root relaxation: objective 0.000000e+00, 260 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 0 188 - 0.00000 - - 0s 0 0 0.00000 0 244 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4005 simplex iterations) in 0.40 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 21:53:44 2012 Optimize a model with 3783 rows, 1347 columns and 11595 nonzeros Presolve time: 0.01s Presolved: 3783 rows, 1347 columns, 11595 nonzeros Variable types: 0 continuous, 1347 integer (1347 binary) Root relaxation: objective 0.000000e+00, 266 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 235 - 0.00000 - - 0s 0 0 0.00000 0 272 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 1s 0 0 0.00000 0 299 - 0.00000 - - 1s 0 0 0.00000 0 261 - 0.00000 - - 1s 0 0 0.00000 0 262 - 0.00000 - - 2s 0 0 0.00000 0 266 - 0.00000 - - 2s 0 0 0.00000 0 297 - 0.00000 - - 3s 0 0 0.00000 0 297 - 0.00000 - - 3s 0 2 0.00000 0 297 - 0.00000 - - 3s 276 79 0.00000 23 252 - 0.00000 - 77.6 5s 708 124 0.00000 30 255 - 0.00000 - 74.3 10s 715 129 0.00000 12 222 - 0.00000 - 73.6 15s * 822 94 34 0.0000000 0.00000 0.0% 130 19s Cutting planes: Clique: 1 Zero half: 1 Explored 823 nodes (134403 simplex iterations) in 20.00 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 21:54:04 2012 Optimize a model with 3051 rows, 1224 columns and 9276 nonzeros Presolve time: 0.01s Presolved: 3051 rows, 1224 columns, 9276 nonzeros Variable types: 0 continuous, 1224 integer (1224 binary) Root relaxation: objective 0.000000e+00, 291 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 144 - 0.00000 - - 0s 0 0 0.00000 0 255 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 1s 0 0 0.00000 0 352 - 0.00000 - - 1s 0 0 0.00000 0 350 - 0.00000 - - 1s 0 0 0.00000 0 347 - 0.00000 - - 1s 0 0 0.00000 0 350 - 0.00000 - - 2s 0 0 0.00000 0 353 - 0.00000 - - 2s 0 0 0.00000 0 352 - 0.00000 - - 3s 0 0 0.00000 0 349 - 0.00000 - - 3s 0 0 0.00000 0 345 - 0.00000 - - 4s 0 0 0.00000 0 344 - 0.00000 - - 5s 0 0 0.00000 0 356 - 0.00000 - - 5s 0 0 0.00000 0 349 - 0.00000 - - 6s 0 0 0.00000 0 357 - 0.00000 - - 6s 0 0 0.00000 0 355 - 0.00000 - - 6s 0 2 0.00000 0 355 - 0.00000 - - 7s Cutting planes: Clique: 8 Zero half: 26 Explored 26 nodes (40676 simplex iterations) in 8.06 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