current bounds on the number of colors: 0 -- 220 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:09 2012 Optimize a model with 27280 rows, 24446 columns and 105380 nonzeros Presolve removed 26 rows and 2860 columns Presolve time: 0.14s Presolved: 27254 rows, 21586 columns, 102520 nonzeros Variable types: 0 continuous, 21586 integer (21586 binary) Root relaxation: objective 0.000000e+00, 359 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 (359 simplex iterations) in 0.16 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 16:36:10 2012 Optimize a model with 13750 rows, 12346 columns and 52690 nonzeros Presolve removed 26 rows and 1430 columns Presolve time: 0.13s Presolved: 13724 rows, 10916 columns, 51260 nonzeros Variable types: 0 continuous, 10916 integer (10916 binary) Root relaxation: objective 0.000000e+00, 359 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 (359 simplex iterations) in 0.14 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 16:36:10 2012 Optimize a model with 6862 rows, 6186 columns and 25866 nonzeros Presolve removed 26 rows and 702 columns Presolve time: 0.04s Presolved: 6836 rows, 5484 columns, 25164 nonzeros Variable types: 0 continuous, 5484 integer (5484 binary) Root relaxation: objective 0.000000e+00, 357 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 (357 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 16:36:10 2012 Optimize a model with 3418 rows, 3106 columns and 12454 nonzeros Presolve removed 26 rows and 338 columns Presolve time: 0.01s Presolved: 3392 rows, 2768 columns, 12116 nonzeros Variable types: 0 continuous, 2768 integer (2768 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:10 2012 Optimize a model with 1696 rows, 1566 columns and 5748 nonzeros Presolve removed 26 rows and 156 columns Presolve time: 0.01s Presolved: 1670 rows, 1410 columns, 5592 nonzeros Variable types: 0 continuous, 1410 integer (1410 binary) Root relaxation: objective 0.000000e+00, 341 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 (341 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 16:36:10 2012 Optimize a model with 958 rows, 906 columns and 2874 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 932 rows, 828 columns, 2796 nonzeros Variable types: 0 continuous, 828 integer (828 binary) Root relaxation: objective 0.000000e+00, 362 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 (492 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 16:36:10 2012 Optimize a model with 466 rows, 466 columns and 958 nonzeros Presolve removed 466 rows and 466 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 16:36:11 2012 Optimize a model with 712 rows, 686 columns and 1916 nonzeros Presolve removed 220 rows and 246 columns Presolve time: 0.00s Presolved: 492 rows, 440 columns, 1476 nonzeros Variable types: 0 continuous, 440 integer (440 binary) Root relaxation: objective 0.000000e+00, 216 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 0 185 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (746 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