current bounds on the number of colors: 0 -- 227 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:48 2012 Optimize a model with 32206 rows, 25934 columns and 121588 nonzeros Presolve removed 17 rows and 1921 columns Presolve time: 0.15s Presolved: 32189 rows, 24013 columns, 119667 nonzeros Variable types: 0 continuous, 24013 integer (24013 binary) Root relaxation: objective 0.000000e+00, 413 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 (413 simplex iterations) in 0.18 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 -- 113 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:49 2012 Optimize a model with 16075 rows, 12995 columns and 60256 nonzeros Presolve removed 17 rows and 952 columns Presolve time: 0.12s Presolved: 16058 rows, 12043 columns, 59304 nonzeros Variable types: 0 continuous, 12043 integer (12043 binary) Root relaxation: objective 0.000000e+00, 412 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 (412 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:50 2012 Optimize a model with 8151 rows, 6639 columns and 30128 nonzeros Presolve removed 17 rows and 476 columns Presolve time: 0.05s Presolved: 8134 rows, 6163 columns, 29652 nonzeros Variable types: 0 continuous, 6163 integer (6163 binary) Root relaxation: objective 0.000000e+00, 415 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 (415 simplex iterations) in 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:50 2012 Optimize a model with 4189 rows, 3461 columns and 15064 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4172 rows, 3223 columns, 14826 nonzeros Variable types: 0 continuous, 3223 integer (3223 binary) Root relaxation: objective 0.000000e+00, 438 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 (691 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:50 2012 Optimize a model with 2208 rows, 1872 columns and 7532 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2191 rows, 1753 columns, 7413 nonzeros Variable types: 0 continuous, 1753 integer (1753 binary) Root relaxation: objective 0.000000e+00, 402 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 (590 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:50 2012 Optimize a model with 1076 rows, 964 columns and 3228 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1059 rows, 913 columns, 3177 nonzeros Variable types: 0 continuous, 913 integer (913 binary) Root relaxation: objective 0.000000e+00, 436 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 (624 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 16:38:50 2012 Optimize a model with 510 rows, 510 columns and 1076 nonzeros Presolve removed 510 rows and 510 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 16:38:50 2012 Optimize a model with 793 rows, 737 columns and 2152 nonzeros Presolve removed 233 rows and 253 columns Presolve time: 0.00s Presolved: 560 rows, 484 columns, 1680 nonzeros Variable types: 0 continuous, 484 integer (484 binary) Root relaxation: objective 0.000000e+00, 224 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 0 204 - 0.00000 - - 0s Explored 0 nodes (736 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