current bounds on the number of colors: 0 -- 216 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:02 2012 Optimize a model with 26136 rows, 23568 columns and 101088 nonzeros Presolve removed 19 rows and 2052 columns Presolve time: 0.13s Presolved: 26117 rows, 21516 columns, 99036 nonzeros Variable types: 0 continuous, 21516 integer (21516 binary) Root relaxation: objective 0.000000e+00, 371 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 (371 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 -- 108 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:02 2012 Optimize a model with 13176 rows, 11904 columns and 50544 nonzeros Presolve removed 19 rows and 1026 columns Presolve time: 0.12s Presolved: 13157 rows, 10878 columns, 49518 nonzeros Variable types: 0 continuous, 10878 integer (10878 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:02 2012 Optimize a model with 6696 rows, 6072 columns and 25272 nonzeros Presolve removed 19 rows and 513 columns Presolve time: 0.04s Presolved: 6677 rows, 5559 columns, 24759 nonzeros Variable types: 0 continuous, 5559 integer (5559 binary) Root relaxation: objective 0.000000e+00, 363 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 (363 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 16:35:03 2012 Optimize a model with 3336 rows, 3048 columns and 12168 nonzeros Presolve removed 19 rows and 247 columns Presolve time: 0.01s Presolved: 3317 rows, 2801 columns, 11921 nonzeros Variable types: 0 continuous, 2801 integer (2801 binary) Root relaxation: objective 0.000000e+00, 378 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 (574 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 16:35:03 2012 Optimize a model with 1656 rows, 1536 columns and 5616 nonzeros Presolve removed 19 rows and 114 columns Presolve time: 0.01s Presolved: 1637 rows, 1422 columns, 5502 nonzeros Variable types: 0 continuous, 1422 integer (1422 binary) Root relaxation: objective 0.000000e+00, 353 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 (353 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 16:35:03 2012 Optimize a model with 936 rows, 888 columns and 2808 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 917 rows, 831 columns, 2751 nonzeros Variable types: 0 continuous, 831 integer (831 binary) Root relaxation: objective 0.000000e+00, 355 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 (488 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 16:35:03 2012 Optimize a model with 456 rows, 456 columns and 936 nonzeros Presolve removed 456 rows and 456 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 16:35:03 2012 Optimize a model with 696 rows, 672 columns and 1872 nonzeros Presolve removed 230 rows and 256 columns Presolve time: 0.00s Presolved: 466 rows, 416 columns, 1398 nonzeros Variable types: 0 continuous, 416 integer (416 binary) Root relaxation: objective 0.000000e+00, 207 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 0 170 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (670 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