current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:42 2012 Optimize a model with 18018 rows, 16758 columns and 70070 nonzeros Presolve removed 18 rows and 1638 columns Presolve time: 0.13s Presolved: 18000 rows, 15120 columns, 68432 nonzeros Variable types: 0 continuous, 15120 integer (15120 binary) Root relaxation: objective 0.000000e+00, 307 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 (307 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:43 2012 Optimize a model with 9002 rows, 8386 columns and 34650 nonzeros Presolve removed 18 rows and 810 columns Presolve time: 0.08s Presolved: 8984 rows, 7576 columns, 33840 nonzeros Variable types: 0 continuous, 7576 integer (7576 binary) Root relaxation: objective 0.000000e+00, 303 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 (303 simplex iterations) in 0.09 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 16:25:43 2012 Optimize a model with 4494 rows, 4200 columns and 16940 nonzeros Presolve removed 18 rows and 396 columns Presolve time: 0.03s Presolved: 4476 rows, 3804 columns, 16544 nonzeros Variable types: 0 continuous, 3804 integer (3804 binary) Root relaxation: objective 0.000000e+00, 296 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 (429 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 16:25:43 2012 Optimize a model with 2338 rows, 2198 columns and 8470 nonzeros Presolve removed 18 rows and 198 columns Presolve time: 0.01s Presolved: 2320 rows, 2000 columns, 8272 nonzeros Variable types: 0 continuous, 2000 integer (2000 binary) Root relaxation: objective 0.000000e+00, 304 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 (304 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 16:25:43 2012 Optimize a model with 1162 rows, 1106 columns and 3850 nonzeros Presolve removed 18 rows and 90 columns Presolve time: 0.00s Presolved: 1144 rows, 1016 columns, 3760 nonzeros Variable types: 0 continuous, 1016 integer (1016 binary) Root relaxation: objective 0.000000e+00, 276 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 (276 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:43 2012 Optimize a model with 574 rows, 560 columns and 1540 nonzeros Presolve removed 184 rows and 203 columns Presolve time: 0.00s Presolved: 390 rows, 357 columns, 1170 nonzeros Variable types: 0 continuous, 357 integer (357 binary) Root relaxation: objective 0.000000e+00, 182 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 0 156 - 0.00000 - - 0s Explored 0 nodes (607 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 16:25:43 2012 Optimize a model with 770 rows, 742 columns and 2310 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 752 rows, 688 columns, 2256 nonzeros Variable types: 0 continuous, 688 integer (688 binary) Root relaxation: objective 0.000000e+00, 286 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 (286 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