current bounds on the number of colors: 0 -- 168 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:50 2012 Optimize a model with 12600 rows, 14260 columns and 51408 nonzeros Presolve removed 27 rows and 2268 columns Presolve time: 0.12s Presolved: 12573 rows, 11992 columns, 49140 nonzeros Variable types: 0 continuous, 11992 integer (11992 binary) Root relaxation: objective 0.000000e+00, 240 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 (240 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 -- 84 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:50 2012 Optimize a model with 6384 rows, 7204 columns and 25704 nonzeros Presolve removed 27 rows and 1134 columns Presolve time: 0.05s Presolved: 6357 rows, 6070 columns, 24570 nonzeros Variable types: 0 continuous, 6070 integer (6070 binary) Root relaxation: objective 0.000000e+00, 241 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 (241 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:51 2012 Optimize a model with 3276 rows, 3676 columns and 12852 nonzeros Presolve removed 27 rows and 567 columns Presolve time: 0.02s Presolved: 3249 rows, 3109 columns, 12285 nonzeros Variable types: 0 continuous, 3109 integer (3109 binary) Root relaxation: objective 0.000000e+00, 241 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 (241 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:51 2012 Optimize a model with 1648 rows, 1828 columns and 6120 nonzeros Presolve removed 27 rows and 270 columns Presolve time: 0.01s Presolved: 1621 rows, 1558 columns, 5850 nonzeros Variable types: 0 continuous, 1558 integer (1558 binary) Root relaxation: objective 0.000000e+00, 241 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 (241 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 16:22:51 2012 Optimize a model with 908 rows, 988 columns and 3060 nonzeros Presolve removed 27 rows and 135 columns Presolve time: 0.00s Presolved: 881 rows, 853 columns, 2925 nonzeros Variable types: 0 continuous, 853 integer (853 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 0.00 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 16:22:51 2012 Optimize a model with 464 rows, 484 columns and 1224 nonzeros Presolve removed 170 rows and 198 columns Presolve time: 0.00s Presolved: 294 rows, 286 columns, 882 nonzeros Variable types: 0 continuous, 286 integer (286 binary) Root relaxation: objective 0.000000e+00, 162 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 0 133 - 0.00000 - - 0s Explored 0 nodes (515 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 16:22:51 2012 Optimize a model with 612 rows, 652 columns and 1836 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 585 rows, 571 columns, 1755 nonzeros Variable types: 0 continuous, 571 integer (571 binary) Root relaxation: objective 0.000000e+00, 215 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 (215 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