current bounds on the number of colors: 0 -- 162 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:42 2012 Optimize a model with 12393 rows, 13273 columns and 49815 nonzeros Presolve removed 19 rows and 1539 columns Presolve time: 0.12s Presolved: 12374 rows, 11734 columns, 48276 nonzeros Variable types: 0 continuous, 11734 integer (11734 binary) Root relaxation: objective 0.000000e+00, 245 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 (245 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 16:21:42 2012 Optimize a model with 6202 rows, 6631 columns and 24600 nonzeros Presolve removed 19 rows and 760 columns Presolve time: 0.05s Presolved: 6183 rows, 5871 columns, 23840 nonzeros Variable types: 0 continuous, 5871 integer (5871 binary) Root relaxation: objective 0.000000e+00, 246 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 (246 simplex iterations) in 0.06 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 16:21:42 2012 Optimize a model with 3182 rows, 3391 columns and 12300 nonzeros Presolve removed 19 rows and 380 columns Presolve time: 0.02s Presolved: 3163 rows, 3011 columns, 11920 nonzeros Variable types: 0 continuous, 3011 integer (3011 binary) Root relaxation: objective 0.000000e+00, 245 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 (245 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 16:21:42 2012 Optimize a model with 1672 rows, 1771 columns and 6150 nonzeros Presolve removed 19 rows and 190 columns Presolve time: 0.01s Presolved: 1653 rows, 1581 columns, 5960 nonzeros Variable types: 0 continuous, 1581 integer (1581 binary) Root relaxation: objective 0.000000e+00, 257 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 (257 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 16:21:43 2012 Optimize a model with 917 rows, 961 columns and 3075 nonzeros Presolve removed 19 rows and 95 columns Presolve time: 0.00s Presolved: 898 rows, 866 columns, 2980 nonzeros Variable types: 0 continuous, 866 integer (866 binary) Root relaxation: objective 0.000000e+00, 225 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 (225 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 16:21:43 2012 Optimize a model with 464 rows, 475 columns and 1230 nonzeros Presolve removed 178 rows and 205 columns Presolve time: 0.00s Presolved: 286 rows, 270 columns, 858 nonzeros Variable types: 0 continuous, 270 integer (270 binary) Root relaxation: objective 0.000000e+00, 143 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 0 123 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (466 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 16:21:43 2012 Optimize a model with 615 rows, 637 columns and 1845 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 596 rows, 580 columns, 1788 nonzeros Variable types: 0 continuous, 580 integer (580 binary) Root relaxation: objective 0.000000e+00, 224 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 (224 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