current bounds on the number of colors: 0 -- 235 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:49 2012 Optimize a model with 32761 rows, 27773 columns and 125073 nonzeros Presolve removed 21 rows and 2457 columns Presolve time: 0.15s Presolved: 32740 rows, 25316 columns, 122616 nonzeros Variable types: 0 continuous, 25316 integer (25316 binary) Root relaxation: objective 0.000000e+00, 422 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 (422 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:50 2012 Optimize a model with 16359 rows, 13908 columns and 62002 nonzeros Presolve removed 21 rows and 1218 columns Presolve time: 0.12s Presolved: 16338 rows, 12690 columns, 60784 nonzeros Variable types: 0 continuous, 12690 integer (12690 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:50 2012 Optimize a model with 8297 rows, 7093 columns and 31001 nonzeros Presolve removed 21 rows and 609 columns Presolve time: 0.05s Presolved: 8276 rows, 6484 columns, 30392 nonzeros Variable types: 0 continuous, 6484 integer (6484 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:51 2012 Optimize a model with 4127 rows, 3568 columns and 14966 nonzeros Presolve removed 21 rows and 294 columns Presolve time: 0.02s Presolved: 4106 rows, 3274 columns, 14672 nonzeros Variable types: 0 continuous, 3274 integer (3274 binary) Root relaxation: objective 0.000000e+00, 445 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 (701 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 16:41:51 2012 Optimize a model with 2181 rows, 1923 columns and 7483 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2160 rows, 1776 columns, 7336 nonzeros Variable types: 0 continuous, 1776 integer (1776 binary) Root relaxation: objective 0.000000e+00, 406 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 (595 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 16:41:51 2012 Optimize a model with 1069 rows, 983 columns and 3207 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1048 rows, 920 columns, 3144 nonzeros Variable types: 0 continuous, 920 integer (920 binary) Root relaxation: objective 0.000000e+00, 403 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 (549 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 16:41:51 2012 Optimize a model with 513 rows, 513 columns and 1069 nonzeros Presolve removed 513 rows and 513 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 16:41:51 2012 Optimize a model with 791 rows, 748 columns and 2138 nonzeros Presolve removed 245 rows and 271 columns Presolve time: 0.00s Presolved: 546 rows, 477 columns, 1638 nonzeros Variable types: 0 continuous, 477 integer (477 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 0 201 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (753 simplex iterations) in 0.03 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