current bounds on the number of colors: 0 -- 222 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:58 2012 Optimize a model with 30858 rows, 24918 columns and 116550 nonzeros Presolve removed 11 rows and 1221 columns Presolve time: 0.15s Presolved: 30847 rows, 23697 columns, 115329 nonzeros Variable types: 0 continuous, 23697 integer (23697 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:59 2012 Optimize a model with 15402 rows, 12486 columns and 57750 nonzeros Presolve removed 11 rows and 605 columns Presolve time: 0.12s Presolved: 15391 rows, 11881 columns, 57145 nonzeros Variable types: 0 continuous, 11881 integer (11881 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:59 2012 Optimize a model with 7674 rows, 6270 columns and 28350 nonzeros Presolve removed 11 rows and 297 columns Presolve time: 0.05s Presolved: 7663 rows, 5973 columns, 28053 nonzeros Variable types: 0 continuous, 5973 integer (5973 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 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 16:36:59 2012 Optimize a model with 3810 rows, 3162 columns and 13650 nonzeros Presolve removed 11 rows and 143 columns Presolve time: 0.02s Presolved: 3799 rows, 3019 columns, 13507 nonzeros Variable types: 0 continuous, 3019 integer (3019 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 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 16:36:59 2012 Optimize a model with 1878 rows, 1608 columns and 6300 nonzeros Presolve removed 11 rows and 66 columns Presolve time: 0.01s Presolved: 1867 rows, 1542 columns, 6234 nonzeros Variable types: 0 continuous, 1542 integer (1542 binary) Root relaxation: objective 0.000000e+00, 413 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 (413 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 16:37:00 2012 Optimize a model with 1050 rows, 942 columns and 3150 nonzeros Presolve removed 11 rows and 33 columns Presolve time: 0.00s Presolved: 1039 rows, 909 columns, 3117 nonzeros Variable types: 0 continuous, 909 integer (909 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 (574 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 16:37:00 2012 Optimize a model with 498 rows, 498 columns and 1050 nonzeros Presolve removed 498 rows and 498 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 16:37:00 2012 Optimize a model with 774 rows, 720 columns and 2100 nonzeros Presolve removed 226 rows and 239 columns Presolve time: 0.00s Presolved: 548 rows, 481 columns, 1644 nonzeros Variable types: 0 continuous, 481 integer (481 binary) Root relaxation: objective 0.000000e+00, 238 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 (740 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