current bounds on the number of colors: 0 -- 221 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:47 2012 Optimize a model with 29261 rows, 24574 columns and 111430 nonzeros Presolve removed 15 rows and 1650 columns Presolve time: 0.14s Presolved: 29246 rows, 22924 columns, 109780 nonzeros Variable types: 0 continuous, 22924 integer (22924 binary) Root relaxation: objective 0.000000e+00, 406 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 (406 simplex iterations) in 0.17 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:48 2012 Optimize a model with 14741 rows, 12419 columns and 55715 nonzeros Presolve removed 15 rows and 825 columns Presolve time: 0.13s Presolved: 14726 rows, 11594 columns, 54890 nonzeros Variable types: 0 continuous, 11594 integer (11594 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 0.15 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:48 2012 Optimize a model with 7349 rows, 6231 columns and 27351 nonzeros Presolve removed 15 rows and 405 columns Presolve time: 0.04s Presolved: 7334 rows, 5826 columns, 26946 nonzeros Variable types: 0 continuous, 5826 integer (5826 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:49 2012 Optimize a model with 3653 rows, 3137 columns and 13169 nonzeros Presolve removed 15 rows and 195 columns Presolve time: 0.02s Presolved: 3638 rows, 2942 columns, 12974 nonzeros Variable types: 0 continuous, 2942 integer (2942 binary) Root relaxation: objective 0.000000e+00, 413 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 (637 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:49 2012 Optimize a model with 1805 rows, 1590 columns and 6078 nonzeros Presolve removed 15 rows and 90 columns Presolve time: 0.01s Presolved: 1790 rows, 1500 columns, 5988 nonzeros Variable types: 0 continuous, 1500 integer (1500 binary) Root relaxation: objective 0.000000e+00, 398 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 (398 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 16:36:49 2012 Optimize a model with 1013 rows, 927 columns and 3039 nonzeros Presolve removed 15 rows and 45 columns Presolve time: 0.00s Presolved: 998 rows, 882 columns, 2994 nonzeros Variable types: 0 continuous, 882 integer (882 binary) Root relaxation: objective 0.000000e+00, 396 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 (579 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 16:36:49 2012 Optimize a model with 485 rows, 485 columns and 1013 nonzeros Presolve removed 485 rows and 485 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 16:36:49 2012 Optimize a model with 749 rows, 706 columns and 2026 nonzeros Presolve removed 223 rows and 239 columns Presolve time: 0.00s Presolved: 526 rows, 467 columns, 1578 nonzeros Variable types: 0 continuous, 467 integer (467 binary) Root relaxation: objective 0.000000e+00, 232 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 0 201 - 0.00000 - - 0s Explored 0 nodes (778 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