current bounds on the number of colors: 0 -- 239 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:41 2012 Optimize a model with 33559 rows, 28721 columns and 128401 nonzeros Presolve removed 24 rows and 2856 columns Presolve time: 0.15s Presolved: 33535 rows, 25865 columns, 125545 nonzeros Variable types: 0 continuous, 25865 integer (25865 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 simplex iterations) in 0.18 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 16:43:42 2012 Optimize a model with 16759 rows, 14381 columns and 63661 nonzeros Presolve removed 24 rows and 1416 columns Presolve time: 0.12s Presolved: 16735 rows, 12965 columns, 62245 nonzeros Variable types: 0 continuous, 12965 integer (12965 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 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 16:43:43 2012 Optimize a model with 8359 rows, 7211 columns and 31291 nonzeros Presolve removed 24 rows and 696 columns Presolve time: 0.05s Presolved: 8335 rows, 6515 columns, 30595 nonzeros Variable types: 0 continuous, 6515 integer (6515 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:43 2012 Optimize a model with 4159 rows, 3626 columns and 15106 nonzeros Presolve removed 24 rows and 336 columns Presolve time: 0.02s Presolved: 4135 rows, 3290 columns, 14770 nonzeros Variable types: 0 continuous, 3290 integer (3290 binary) Root relaxation: objective 0.000000e+00, 429 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 (655 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 16:43:43 2012 Optimize a model with 2199 rows, 1953 columns and 7553 nonzeros Presolve removed 24 rows and 168 columns Presolve time: 0.01s Presolved: 2175 rows, 1785 columns, 7385 nonzeros Variable types: 0 continuous, 1785 integer (1785 binary) Root relaxation: objective 0.000000e+00, 408 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 (589 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 16:43:43 2012 Optimize a model with 1079 rows, 997 columns and 3237 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 1055 rows, 925 columns, 3165 nonzeros Variable types: 0 continuous, 925 integer (925 binary) Root relaxation: objective 0.000000e+00, 435 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 (697 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 16:43:43 2012 Optimize a model with 519 rows, 519 columns and 1079 nonzeros Presolve removed 519 rows and 519 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 16:43:43 2012 Optimize a model with 799 rows, 758 columns and 2158 nonzeros Presolve removed 241 rows and 266 columns Presolve time: 0.00s Presolved: 558 rows, 492 columns, 1674 nonzeros Variable types: 0 continuous, 492 integer (492 binary) Root relaxation: objective 0.000000e+00, 248 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 0 213 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (815 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