current bounds on the number of colors: 0 -- 166 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:30 2012 Optimize a model with 11952 rows, 13920 columns and 49136 nonzeros Presolve removed 22 rows and 1826 columns Presolve time: 0.12s Presolved: 11930 rows, 12094 columns, 47310 nonzeros Variable types: 0 continuous, 12094 integer (12094 binary) Root relaxation: objective 0.000000e+00, 259 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 (259 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 -- 83 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:31 2012 Optimize a model with 5988 rows, 6948 columns and 24272 nonzeros Presolve removed 22 rows and 902 columns Presolve time: 0.05s Presolved: 5966 rows, 6046 columns, 23370 nonzeros Variable types: 0 continuous, 6046 integer (6046 binary) Root relaxation: objective 0.000000e+00, 259 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 (259 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 16:22:31 2012 Optimize a model with 3006 rows, 3462 columns and 11840 nonzeros Presolve removed 22 rows and 440 columns Presolve time: 0.02s Presolved: 2984 rows, 3022 columns, 11400 nonzeros Variable types: 0 continuous, 3022 integer (3022 binary) Root relaxation: objective 0.000000e+00, 261 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 (261 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 16:22:31 2012 Optimize a model with 1586 rows, 1802 columns and 5920 nonzeros Presolve removed 22 rows and 220 columns Presolve time: 0.01s Presolved: 1564 rows, 1582 columns, 5700 nonzeros Variable types: 0 continuous, 1582 integer (1582 binary) Root relaxation: objective 0.000000e+00, 253 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 (253 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 16:22:31 2012 Optimize a model with 876 rows, 972 columns and 2960 nonzeros Presolve removed 22 rows and 110 columns Presolve time: 0.00s Presolved: 854 rows, 862 columns, 2850 nonzeros Variable types: 0 continuous, 862 integer (862 binary) Root relaxation: objective 0.000000e+00, 239 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 (239 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 16:22:31 2012 Optimize a model with 450 rows, 474 columns and 1184 nonzeros Presolve removed 176 rows and 203 columns Presolve time: 0.00s Presolved: 274 rows, 271 columns, 822 nonzeros Variable types: 0 continuous, 271 integer (271 binary) Root relaxation: objective 0.000000e+00, 141 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 0 118 - 0.00000 - - 0s Explored 0 nodes (463 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 16:22:31 2012 Optimize a model with 592 rows, 640 columns and 1776 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 570 rows, 574 columns, 1710 nonzeros Variable types: 0 continuous, 574 integer (574 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (240 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