current bounds on the number of colors: 0 -- 239 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:36 2012 Optimize a model with 37248 rows, 28752 columns and 139468 nonzeros Presolve removed 19 rows and 2261 columns Presolve time: 0.18s Presolved: 37229 rows, 26491 columns, 137207 nonzeros Variable types: 0 continuous, 26491 integer (26491 binary) Root relaxation: objective 0.000000e+00, 418 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 (655 simplex iterations) in 0.25 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 -- 119 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:37 2012 Optimize a model with 18588 rows, 14412 columns and 69148 nonzeros Presolve removed 19 rows and 1121 columns Presolve time: 0.12s Presolved: 18569 rows, 13291 columns, 68027 nonzeros Variable types: 0 continuous, 13291 integer (13291 binary) Root relaxation: objective 0.000000e+00, 417 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 (417 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:38 2012 Optimize a model with 9258 rows, 7242 columns and 33988 nonzeros Presolve removed 19 rows and 551 columns Presolve time: 0.06s Presolved: 9239 rows, 6691 columns, 33437 nonzeros Variable types: 0 continuous, 6691 integer (6691 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (660 simplex iterations) in 0.07 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 Sat Dec 15 16:43:38 2012 Optimize a model with 4593 rows, 3657 columns and 16408 nonzeros Presolve removed 19 rows and 266 columns Presolve time: 0.02s Presolved: 4574 rows, 3391 columns, 16142 nonzeros Variable types: 0 continuous, 3391 integer (3391 binary) Root relaxation: objective 0.000000e+00, 458 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 (755 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:38 2012 Optimize a model with 2416 rows, 1984 columns and 8204 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2397 rows, 1851 columns, 8071 nonzeros Variable types: 0 continuous, 1851 integer (1851 binary) Root relaxation: objective 0.000000e+00, 441 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 (648 simplex iterations) in 0.02 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 Sat Dec 15 16:43:38 2012 Optimize a model with 1172 rows, 1028 columns and 3516 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1153 rows, 971 columns, 3459 nonzeros Variable types: 0 continuous, 971 integer (971 binary) Root relaxation: objective 0.000000e+00, 457 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 (881 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:38 2012 Optimize a model with 550 rows, 550 columns and 1172 nonzeros Presolve removed 550 rows and 550 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:38 2012 Optimize a model with 861 rows, 789 columns and 2344 nonzeros Presolve removed 245 rows and 267 columns Presolve time: 0.00s Presolved: 616 rows, 522 columns, 1848 nonzeros Variable types: 0 continuous, 522 integer (522 binary) Root relaxation: objective 0.000000e+00, 240 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 0 214 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (814 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3