current bounds on the number of colors: 0 -- 177 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 14609 rows, 15740 columns and 58872 nonzeros Presolve removed 20 rows and 1760 columns Presolve time: 0.12s Presolved: 14589 rows, 13980 columns, 57112 nonzeros Variable types: 0 continuous, 13980 integer (13980 binary) Root relaxation: objective 0.000000e+00, 285 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 (285 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 -- 88 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 7393 rows, 7952 columns and 29436 nonzeros Presolve removed 20 rows and 880 columns Presolve time: 0.07s Presolved: 7373 rows, 7072 columns, 28556 nonzeros Variable types: 0 continuous, 7072 integer (7072 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 simplex iterations) in 0.07 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 3785 rows, 4058 columns and 14718 nonzeros Presolve removed 20 rows and 440 columns Presolve time: 0.02s Presolved: 3765 rows, 3618 columns, 14278 nonzeros Variable types: 0 continuous, 3618 integer (3618 binary) Root relaxation: objective 0.000000e+00, 286 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 (286 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 1981 rows, 2111 columns and 7359 nonzeros Presolve removed 20 rows and 220 columns Presolve time: 0.01s Presolved: 1961 rows, 1891 columns, 7139 nonzeros Variable types: 0 continuous, 1891 integer (1891 binary) Root relaxation: objective 0.000000e+00, 273 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 (273 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 997 rows, 1049 columns and 3345 nonzeros Presolve removed 20 rows and 100 columns Presolve time: 0.00s Presolved: 977 rows, 949 columns, 3245 nonzeros Variable types: 0 continuous, 949 integer (949 binary) Root relaxation: objective 0.000000e+00, 261 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 (261 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 505 rows, 518 columns and 1338 nonzeros Presolve removed 187 rows and 212 columns Presolve time: 0.00s Presolved: 318 rows, 306 columns, 954 nonzeros Variable types: 0 continuous, 306 integer (306 binary) Root relaxation: objective 0.000000e+00, 171 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 0 147 - 0.00000 - - 0s Explored 0 nodes (547 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:36 2012 Optimize a model with 669 rows, 695 columns and 2007 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 649 rows, 635 columns, 1947 nonzeros Variable types: 0 continuous, 635 integer (635 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 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