current bounds on the number of colors: 0 -- 145 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 6409 rows, 10527 columns and 29232 nonzeros Presolve removed 45 rows and 3240 columns Presolve time: 0.09s Presolved: 6364 rows, 7287 columns, 25992 nonzeros Variable types: 0 continuous, 7287 integer (7287 binary) Root relaxation: objective 0.000000e+00, 165 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 (165 simplex iterations) in 0.10 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 -- 72 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 3277 rows, 5307 columns and 14616 nonzeros Presolve removed 45 rows and 1620 columns Presolve time: 0.03s Presolved: 3232 rows, 3687 columns, 12996 nonzeros Variable types: 0 continuous, 3687 integer (3687 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 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 -- 36 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 1711 rows, 2697 columns and 7308 nonzeros Presolve removed 45 rows and 810 columns Presolve time: 0.01s Presolved: 1666 rows, 1887 columns, 6498 nonzeros Variable types: 0 continuous, 1887 integer (1887 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 928 rows, 1392 columns and 3654 nonzeros Presolve removed 45 rows and 405 columns Presolve time: 0.00s Presolved: 883 rows, 987 columns, 3249 nonzeros Variable types: 0 continuous, 987 integer (987 binary) Root relaxation: objective 0.000000e+00, 166 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 (166 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 493 rows, 667 columns and 1624 nonzeros Presolve removed 45 rows and 180 columns Presolve time: 0.00s Presolved: 448 rows, 487 columns, 1444 nonzeros Variable types: 0 continuous, 487 integer (487 binary) Root relaxation: objective 0.000000e+00, 144 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 (144 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 319 rows, 377 columns and 812 nonzeros Presolve removed 165 rows and 220 columns Presolve time: 0.00s Presolved: 154 rows, 157 columns, 462 nonzeros Variable types: 0 continuous, 157 integer (157 binary) Root relaxation: objective 0.000000e+00, 58 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 (58 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:14 2012 Optimize a model with 232 rows, 232 columns and 406 nonzeros Presolve removed 232 rows and 232 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 - optimal solution found: number of colors: 2