current bounds on the number of colors: 0 -- 164 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:04 2012 Optimize a model with 12382 rows, 13597 columns and 50102 nonzeros Presolve removed 22 rows and 1804 columns Presolve time: 0.12s Presolved: 12360 rows, 11793 columns, 48298 nonzeros Variable types: 0 continuous, 11793 integer (11793 binary) Root relaxation: objective 0.000000e+00, 251 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 (251 simplex iterations) in 0.13 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 -- 82 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:05 2012 Optimize a model with 6273 rows, 6873 columns and 25051 nonzeros Presolve removed 22 rows and 902 columns Presolve time: 0.05s Presolved: 6251 rows, 5971 columns, 24149 nonzeros Variable types: 0 continuous, 5971 integer (5971 binary) Root relaxation: objective 0.000000e+00, 252 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 (252 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:05 2012 Optimize a model with 3144 rows, 3429 columns and 12220 nonzeros Presolve removed 22 rows and 440 columns Presolve time: 0.02s Presolved: 3122 rows, 2989 columns, 11780 nonzeros Variable types: 0 continuous, 2989 integer (2989 binary) Root relaxation: objective 0.000000e+00, 249 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 (249 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:05 2012 Optimize a model with 1654 rows, 1789 columns and 6110 nonzeros Presolve removed 22 rows and 220 columns Presolve time: 0.01s Presolved: 1632 rows, 1569 columns, 5890 nonzeros Variable types: 0 continuous, 1569 integer (1569 binary) Root relaxation: objective 0.000000e+00, 245 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 (245 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:05 2012 Optimize a model with 909 rows, 969 columns and 3055 nonzeros Presolve removed 22 rows and 110 columns Presolve time: 0.00s Presolved: 887 rows, 859 columns, 2945 nonzeros Variable types: 0 continuous, 859 integer (859 binary) Root relaxation: objective 0.000000e+00, 229 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 (229 simplex iterations) in 0.00 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: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:05 2012 Optimize a model with 462 rows, 477 columns and 1222 nonzeros Presolve removed 176 rows and 204 columns Presolve time: 0.00s Presolved: 286 rows, 273 columns, 858 nonzeros Variable types: 0 continuous, 273 integer (273 binary) Root relaxation: objective 0.000000e+00, 150 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 0 127 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (445 simplex iterations) in 0.00 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 16:22:05 2012 Optimize a model with 611 rows, 641 columns and 1833 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 589 rows, 575 columns, 1767 nonzeros Variable types: 0 continuous, 575 integer (575 binary) Root relaxation: objective 0.000000e+00, 235 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 (235 simplex iterations) in 0.00 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% optimal solution found: number of colors: 3