current bounds on the number of colors: 0 -- 172 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:37 2012 Optimize a model with 13330 rows, 14945 columns and 54266 nonzeros Presolve removed 29 rows and 2494 columns Presolve time: 0.11s Presolved: 13301 rows, 12451 columns, 51772 nonzeros Variable types: 0 continuous, 12451 integer (12451 binary) Root relaxation: objective 0.000000e+00, 260 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 (260 simplex iterations) in 0.12 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 -- 86 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:38 2012 Optimize a model with 6751 rows, 7549 columns and 27133 nonzeros Presolve removed 29 rows and 1247 columns Presolve time: 0.06s Presolved: 6722 rows, 6302 columns, 25886 nonzeros Variable types: 0 continuous, 6302 integer (6302 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 0.07 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 -- 43 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:38 2012 Optimize a model with 3385 rows, 3765 columns and 13251 nonzeros Presolve removed 29 rows and 609 columns Presolve time: 0.02s Presolved: 3356 rows, 3156 columns, 12642 nonzeros Variable types: 0 continuous, 3156 integer (3156 binary) Root relaxation: objective 0.000000e+00, 256 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 (256 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:38 2012 Optimize a model with 1702 rows, 1873 columns and 6310 nonzeros Presolve removed 29 rows and 290 columns Presolve time: 0.01s Presolved: 1673 rows, 1583 columns, 6020 nonzeros Variable types: 0 continuous, 1583 integer (1583 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 0.01 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 16:23:38 2012 Optimize a model with 937 rows, 1013 columns and 3155 nonzeros Presolve removed 29 rows and 145 columns Presolve time: 0.00s Presolved: 908 rows, 868 columns, 3010 nonzeros Variable types: 0 continuous, 868 integer (868 binary) Root relaxation: objective 0.000000e+00, 231 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 (231 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 16:23:38 2012 Optimize a model with 478 rows, 497 columns and 1262 nonzeros Presolve removed 180 rows and 213 columns Presolve time: 0.00s Presolved: 298 rows, 284 columns, 894 nonzeros Variable types: 0 continuous, 284 integer (284 binary) Root relaxation: objective 0.000000e+00, 146 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 0 123 - 0.00000 - - 0s Explored 0 nodes (446 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 16:23:38 2012 Optimize a model with 631 rows, 669 columns and 1893 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 602 rows, 582 columns, 1806 nonzeros Variable types: 0 continuous, 582 integer (582 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (308 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