current bounds on the number of colors: 0 -- 181 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:24 2012 Optimize a model with 14401 rows, 16448 columns and 58950 nonzeros Presolve removed 35 rows and 3150 columns Presolve time: 0.12s Presolved: 14366 rows, 13298 columns, 55800 nonzeros Variable types: 0 continuous, 13298 integer (13298 binary) Root relaxation: objective 0.000000e+00, 273 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 (273 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 -- 90 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:24 2012 Optimize a model with 7291 rows, 8303 columns and 29475 nonzeros Presolve removed 35 rows and 1575 columns Presolve time: 0.07s Presolved: 7256 rows, 6728 columns, 27900 nonzeros Variable types: 0 continuous, 6728 integer (6728 binary) Root relaxation: objective 0.000000e+00, 272 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 (272 simplex iterations) in 0.07 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:24 2012 Optimize a model with 3657 rows, 4140 columns and 14410 nonzeros Presolve removed 35 rows and 770 columns Presolve time: 0.02s Presolved: 3622 rows, 3370 columns, 13640 nonzeros Variable types: 0 continuous, 3370 integer (3370 binary) Root relaxation: objective 0.000000e+00, 269 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 (269 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:25 2012 Optimize a model with 1919 rows, 2149 columns and 7205 nonzeros Presolve removed 35 rows and 385 columns Presolve time: 0.01s Presolved: 1884 rows, 1764 columns, 6820 nonzeros Variable types: 0 continuous, 1764 integer (1764 binary) Root relaxation: objective 0.000000e+00, 272 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 (405 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:25 2012 Optimize a model with 971 rows, 1063 columns and 3275 nonzeros Presolve removed 35 rows and 175 columns Presolve time: 0.00s Presolved: 936 rows, 888 columns, 3100 nonzeros Variable types: 0 continuous, 888 integer (888 binary) Root relaxation: objective 0.000000e+00, 244 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 (244 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 16:25:25 2012 Optimize a model with 497 rows, 520 columns and 1310 nonzeros Presolve removed 187 rows and 225 columns Presolve time: 0.00s Presolved: 310 rows, 295 columns, 930 nonzeros Variable types: 0 continuous, 295 integer (295 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 0 131 - 0.00000 - - 0s Explored 0 nodes (478 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:25 2012 Optimize a model with 655 rows, 701 columns and 1965 nonzeros Presolve removed 35 rows and 105 columns Presolve time: 0.00s Presolved: 620 rows, 596 columns, 1860 nonzeros Variable types: 0 continuous, 596 integer (596 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 0.00 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