current bounds on the number of colors: 0 -- 162 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 11178 rows, 13258 columns and 46170 nonzeros Presolve removed 34 rows and 2754 columns Presolve time: 0.12s Presolved: 11144 rows, 10504 columns, 43416 nonzeros Variable types: 0 continuous, 10504 integer (10504 binary) Root relaxation: objective 0.000000e+00, 230 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 (230 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 -- 81 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 5602 rows, 6616 columns and 22800 nonzeros Presolve removed 34 rows and 1360 columns Presolve time: 0.05s Presolved: 5568 rows, 5256 columns, 21440 nonzeros Variable types: 0 continuous, 5256 integer (5256 binary) Root relaxation: objective 0.000000e+00, 231 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 (231 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 2882 rows, 3376 columns and 11400 nonzeros Presolve removed 34 rows and 680 columns Presolve time: 0.02s Presolved: 2848 rows, 2696 columns, 10720 nonzeros Variable types: 0 continuous, 2696 integer (2696 binary) Root relaxation: objective 0.000000e+00, 230 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 (230 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 1522 rows, 1756 columns and 5700 nonzeros Presolve removed 34 rows and 340 columns Presolve time: 0.01s Presolved: 1488 rows, 1416 columns, 5360 nonzeros Variable types: 0 continuous, 1416 integer (1416 binary) Root relaxation: objective 0.000000e+00, 214 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 (214 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 842 rows, 946 columns and 2850 nonzeros Presolve removed 34 rows and 170 columns Presolve time: 0.00s Presolved: 808 rows, 776 columns, 2680 nonzeros Variable types: 0 continuous, 776 integer (776 binary) Root relaxation: objective 0.000000e+00, 219 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 (219 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 434 rows, 460 columns and 1140 nonzeros Presolve removed 166 rows and 202 columns Presolve time: 0.00s Presolved: 268 rows, 258 columns, 804 nonzeros Variable types: 0 continuous, 258 integer (258 binary) Root relaxation: objective 0.000000e+00, 137 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 0 112 - 0.00000 - - 0s Explored 0 nodes (417 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:48 2012 Optimize a model with 570 rows, 622 columns and 1710 nonzeros Presolve removed 34 rows and 102 columns Presolve time: 0.00s Presolved: 536 rows, 520 columns, 1608 nonzeros Variable types: 0 continuous, 520 integer (520 binary) Root relaxation: objective 0.000000e+00, 214 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 (214 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% optimal solution found: number of colors: 3