current bounds on the number of colors: 0 -- 184 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:01 2012 Optimize a model with 81144 rows, 17808 columns and 259808 nonzeros Presolve time: 0.26s Presolved: 81144 rows, 17808 columns, 259808 nonzeros Variable types: 0 continuous, 17808 integer (17808 binary) Root relaxation: objective 0.000000e+00, 756 iterations, 0.09 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 (1196 simplex iterations) in 0.46 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:02 2012 Optimize a model with 40664 rows, 9344 columns and 129904 nonzeros Presolve time: 0.16s Presolved: 40664 rows, 9344 columns, 129904 nonzeros Variable types: 0 continuous, 9344 integer (9344 binary) Root relaxation: objective 0.000000e+00, 614 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 (1039 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:03 2012 Optimize a model with 20424 rows, 5112 columns and 64952 nonzeros Presolve time: 0.08s Presolved: 20424 rows, 5112 columns, 64952 nonzeros Variable types: 0 continuous, 5112 integer (5112 binary) Root relaxation: objective 0.000000e+00, 449 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 (819 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:03 2012 Optimize a model with 9864 rows, 2904 columns and 31064 nonzeros Presolve time: 0.03s Presolved: 9864 rows, 2904 columns, 31064 nonzeros Variable types: 0 continuous, 2904 integer (2904 binary) Root relaxation: objective 0.000000e+00, 390 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 (745 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:04 2012 Optimize a model with 4584 rows, 1800 columns and 14120 nonzeros Presolve time: 0.01s Presolved: 4584 rows, 1800 columns, 14120 nonzeros Variable types: 0 continuous, 1800 integer (1800 binary) Root relaxation: objective 0.000000e+00, 399 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 0 158 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3262 simplex iterations) in 0.21 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: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:04 2012 Optimize a model with 1944 rows, 1248 columns and 5648 nonzeros Presolve removed 184 rows and 184 columns Presolve time: 0.00s Presolved: 1760 rows, 1064 columns, 5280 nonzeros Variable types: 0 continuous, 1064 integer (1064 binary) Root relaxation: objective 0.000000e+00, 193 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 0 184 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (797 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:04 2012 Optimize a model with 2824 rows, 1432 columns and 8472 nonzeros Presolve time: 0.01s Presolved: 2824 rows, 1432 columns, 8472 nonzeros Variable types: 0 continuous, 1432 integer (1432 binary) Root relaxation: objective 0.000000e+00, 432 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 0 366 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 478 - 0.00000 - - 1s 0 0 0.00000 0 490 - 0.00000 - - 1s 0 0 0.00000 0 481 - 0.00000 - - 2s 0 0 0.00000 0 492 - 0.00000 - - 2s 0 0 infeasible 0 - 0.10000 - - 2s Cutting planes: Zero half: 1184 Explored 0 nodes (15928 simplex iterations) in 2.76 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:38:07 2012 Optimize a model with 3704 rows, 1616 columns and 11296 nonzeros Presolve time: 0.01s Presolved: 3704 rows, 1616 columns, 11296 nonzeros Variable types: 0 continuous, 1616 integer (1616 binary) Root relaxation: objective 0.000000e+00, 427 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 0 354 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 409 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 1s 0 0 0.00000 0 318 - 0.00000 - - 1s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 312 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 310 - 0.00000 - - 3s 0 0 0.00000 0 308 - 0.00000 - - 3s 0 0 0.00000 0 304 - 0.00000 - - 3s 0 0 0.00000 0 296 - 0.00000 - - 4s 0 0 0.00000 0 286 - 0.00000 - - 4s 0 0 0.00000 0 286 - 0.00000 - - 4s 0 0 0.00000 0 286 - 0.00000 - - 5s 0 2 0.00000 0 286 - 0.00000 - - 5s 603 69 0.00000 14 328 - 0.00000 - 124 10s 607 72 0.00000 18 280 - 0.00000 - 123 16s 610 74 0.00000 10 252 - 0.00000 - 123 20s 648 79 0.00000 26 367 - 0.00000 - 195 25s 919 17 infeasible 25 - 0.00000 - 211 30s 1190 24 0.00000 27 361 - 0.00000 - 220 35s 1460 12 infeasible 27 - 0.00000 - 225 40s 1742 22 infeasible 24 - 0.00000 - 228 45s 1995 17 infeasible 30 - 0.00000 - 232 50s 2268 10 0.00000 23 384 - 0.00000 - 234 55s 2514 16 0.00000 27 328 - 0.00000 - 237 60s 2798 16 infeasible 25 - 0.00000 - 238 65s Cutting planes: Zero half: 14 Explored 2953 nodes (755965 simplex iterations) in 68.10 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