current bounds on the number of colors: 0 -- 125 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:02 2012 Optimize a model with 6015 rows, 7845 columns and 25420 nonzeros Presolve removed 31 rows and 1922 columns Presolve time: 0.07s Presolved: 5984 rows, 5923 columns, 23498 nonzeros Variable types: 0 continuous, 5923 integer (5923 binary) Root relaxation: objective 0.000000e+00, 172 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 (172 simplex iterations) in 0.08 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:02 2012 Optimize a model with 3070 rows, 3970 columns and 12710 nonzeros Presolve removed 31 rows and 961 columns Presolve time: 0.02s Presolved: 3039 rows, 3009 columns, 11749 nonzeros Variable types: 0 continuous, 3009 integer (3009 binary) Root relaxation: objective 0.000000e+00, 170 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 (170 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:02 2012 Optimize a model with 1550 rows, 1970 columns and 6150 nonzeros Presolve removed 31 rows and 465 columns Presolve time: 0.01s Presolved: 1519 rows, 1505 columns, 5685 nonzeros Variable types: 0 continuous, 1505 integer (1505 binary) Root relaxation: objective 0.000000e+00, 179 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 (179 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:02 2012 Optimize a model with 790 rows, 970 columns and 2870 nonzeros Presolve removed 31 rows and 217 columns Presolve time: 0.00s Presolved: 759 rows, 753 columns, 2653 nonzeros Variable types: 0 continuous, 753 integer (753 binary) Root relaxation: objective 0.000000e+00, 158 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 (158 simplex iterations) in 0.00 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 16:17:02 2012 Optimize a model with 410 rows, 470 columns and 1230 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 379 rows, 377 columns, 1137 nonzeros Variable types: 0 continuous, 377 integer (377 binary) Root relaxation: objective 0.000000e+00, 151 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 (151 simplex iterations) in 0.00 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 16:17:02 2012 Optimize a model with 220 rows, 220 columns and 410 nonzeros Presolve removed 220 rows and 220 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 16:17:02 2012 Optimize a model with 315 rows, 345 columns and 820 nonzeros Presolve removed 137 rows and 174 columns Presolve time: 0.00s Presolved: 178 rows, 171 columns, 534 nonzeros Variable types: 0 continuous, 171 integer (171 binary) Root relaxation: objective 0.000000e+00, 93 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 79 - 0.00000 - - 0s Explored 0 nodes (342 simplex iterations) in 0.00 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