current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:23 2012 Optimize a model with 3717 rows, 7023 columns and 17759 nonzeros Presolve removed 35 rows and 2065 columns Presolve time: 0.05s Presolved: 3682 rows, 4958 columns, 15694 nonzeros Variable types: 0 continuous, 4958 integer (4958 binary) Root relaxation: objective 0.000000e+00, 139 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 (139 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:23 2012 Optimize a model with 1887 rows, 3483 columns and 8729 nonzeros Presolve removed 35 rows and 1015 columns Presolve time: 0.02s Presolved: 1852 rows, 2468 columns, 7714 nonzeros Variable types: 0 continuous, 2468 integer (2468 binary) Root relaxation: objective 0.000000e+00, 140 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 (140 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:23 2012 Optimize a model with 972 rows, 1713 columns and 4214 nonzeros Presolve removed 35 rows and 490 columns Presolve time: 0.01s Presolved: 937 rows, 1223 columns, 3724 nonzeros Variable types: 0 continuous, 1223 integer (1223 binary) Root relaxation: objective 0.000000e+00, 138 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 (138 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:23 2012 Optimize a model with 545 rows, 887 columns and 2107 nonzeros Presolve removed 35 rows and 245 columns Presolve time: 0.00s Presolved: 510 rows, 642 columns, 1862 nonzeros Variable types: 0 continuous, 642 integer (642 binary) Root relaxation: objective 0.000000e+00, 132 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 (132 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 16:16:23 2012 Optimize a model with 301 rows, 415 columns and 903 nonzeros Presolve removed 35 rows and 105 columns Presolve time: 0.00s Presolved: 266 rows, 310 columns, 798 nonzeros Variable types: 0 continuous, 310 integer (310 binary) Root relaxation: objective 0.000000e+00, 110 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 (110 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 16:16:23 2012 Optimize a model with 179 rows, 179 columns and 301 nonzeros Presolve removed 179 rows and 179 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 16:16:23 2012 Optimize a model with 240 rows, 297 columns and 602 nonzeros Presolve removed 140 rows and 186 columns Presolve time: 0.00s Presolved: 100 rows, 111 columns, 300 nonzeros Variable types: 0 continuous, 111 integer (111 binary) Root relaxation: objective 0.000000e+00, 50 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 (50 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: 2