current bounds on the number of colors: 0 -- 248 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:55 2012 Optimize a model with 41292 rows, 31083 columns and 153884 nonzeros Presolve removed 14 rows and 1736 columns Presolve time: 0.20s Presolved: 41278 rows, 29347 columns, 152148 nonzeros Variable types: 0 continuous, 29347 integer (29347 binary) Root relaxation: objective 0.000000e+00, 432 iterations, 0.02 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 (432 simplex iterations) in 0.24 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:55 2012 Optimize a model with 20770 rows, 15707 columns and 76942 nonzeros Presolve removed 14 rows and 868 columns Presolve time: 0.13s Presolved: 20756 rows, 14839 columns, 76074 nonzeros Variable types: 0 continuous, 14839 integer (14839 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 simplex iterations) in 0.15 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:56 2012 Optimize a model with 10509 rows, 8019 columns and 38471 nonzeros Presolve removed 14 rows and 434 columns Presolve time: 0.07s Presolved: 10495 rows, 7585 columns, 38037 nonzeros Variable types: 0 continuous, 7585 integer (7585 binary) Root relaxation: objective 0.000000e+00, 441 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 (441 simplex iterations) in 0.08 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:56 2012 Optimize a model with 5213 rows, 4051 columns and 18615 nonzeros Presolve removed 14 rows and 210 columns Presolve time: 0.02s Presolved: 5199 rows, 3841 columns, 18405 nonzeros Variable types: 0 continuous, 3841 integer (3841 binary) Root relaxation: objective 0.000000e+00, 455 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 (455 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:56 2012 Optimize a model with 2565 rows, 2067 columns and 8687 nonzeros Presolve removed 14 rows and 98 columns Presolve time: 0.01s Presolved: 2551 rows, 1969 columns, 8589 nonzeros Variable types: 0 continuous, 1969 integer (1969 binary) Root relaxation: objective 0.000000e+00, 445 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 (652 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:56 2012 Optimize a model with 1241 rows, 1075 columns and 3723 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 1227 rows, 1033 columns, 3681 nonzeros Variable types: 0 continuous, 1033 integer (1033 binary) Root relaxation: objective 0.000000e+00, 510 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 (716 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:56 2012 Optimize a model with 579 rows, 579 columns and 1241 nonzeros Presolve removed 579 rows and 579 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 16:47:56 2012 Optimize a model with 910 rows, 827 columns and 2482 nonzeros Presolve removed 252 rows and 268 columns Presolve time: 0.00s Presolved: 658 rows, 559 columns, 1974 nonzeros Variable types: 0 continuous, 559 integer (559 binary) Root relaxation: objective 0.000000e+00, 268 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 0 230 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (862 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 - optimal solution found: number of colors: 3