current bounds on the number of colors: 0 -- 213 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:54 2012 Optimize a model with 27879 rows, 22839 columns and 105576 nonzeros Presolve removed 14 rows and 1484 columns Presolve time: 0.13s Presolved: 27865 rows, 21355 columns, 104092 nonzeros Variable types: 0 continuous, 21355 integer (21355 binary) Root relaxation: objective 0.000000e+00, 394 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 (618 simplex iterations) in 0.19 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 -- 106 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:55 2012 Optimize a model with 14046 rows, 11550 columns and 52788 nonzeros Presolve removed 14 rows and 742 columns Presolve time: 0.13s Presolved: 14032 rows, 10808 columns, 52046 nonzeros Variable types: 0 continuous, 10808 integer (10808 binary) Root relaxation: objective 0.000000e+00, 393 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 (606 simplex iterations) in 0.15 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:55 2012 Optimize a model with 6999 rows, 5799 columns and 25896 nonzeros Presolve removed 14 rows and 364 columns Presolve time: 0.04s Presolved: 6985 rows, 5435 columns, 25532 nonzeros Variable types: 0 continuous, 5435 integer (5435 binary) Root relaxation: objective 0.000000e+00, 397 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 (397 simplex iterations) in 0.05 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:55 2012 Optimize a model with 3606 rows, 3030 columns and 12948 nonzeros Presolve removed 14 rows and 182 columns Presolve time: 0.02s Presolved: 3592 rows, 2848 columns, 12766 nonzeros Variable types: 0 continuous, 2848 integer (2848 binary) Root relaxation: objective 0.000000e+00, 382 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 (579 simplex iterations) in 0.04 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:55 2012 Optimize a model with 1779 rows, 1539 columns and 5976 nonzeros Presolve removed 14 rows and 84 columns Presolve time: 0.01s Presolved: 1765 rows, 1455 columns, 5892 nonzeros Variable types: 0 continuous, 1455 integer (1455 binary) Root relaxation: objective 0.000000e+00, 364 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 (364 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:55 2012 Optimize a model with 996 rows, 900 columns and 2988 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 982 rows, 858 columns, 2946 nonzeros Variable types: 0 continuous, 858 integer (858 binary) Root relaxation: objective 0.000000e+00, 406 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 (563 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 16:33:55 2012 Optimize a model with 474 rows, 474 columns and 996 nonzeros Presolve removed 474 rows and 474 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 16:33:56 2012 Optimize a model with 735 rows, 687 columns and 1992 nonzeros Presolve removed 215 rows and 230 columns Presolve time: 0.00s Presolved: 520 rows, 457 columns, 1560 nonzeros Variable types: 0 continuous, 457 integer (457 binary) Root relaxation: objective 0.000000e+00, 224 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 0 197 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (726 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