current bounds on the number of colors: 0 -- 80 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:21:32 2012 Optimize a model with 5880 rows, 3345 columns and 20600 nonzeros Presolve removed 2 rows and 80 columns Presolve time: 0.04s Presolved: 5878 rows, 3265 columns, 20520 nonzeros Variable types: 0 continuous, 3265 integer (3265 binary) Root relaxation: objective 0.000000e+00, 184 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 (184 simplex iterations) in 0.04 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 Fri Dec 14 18:21:32 2012 Optimize a model with 2980 rows, 1745 columns and 10300 nonzeros Presolve removed 2 rows and 40 columns Presolve time: 0.01s Presolved: 2978 rows, 1705 columns, 10260 nonzeros Variable types: 0 continuous, 1705 integer (1705 binary) Root relaxation: objective 0.000000e+00, 178 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 (178 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 Fri Dec 14 18:21:32 2012 Optimize a model with 1530 rows, 945 columns and 5150 nonzeros Presolve removed 2 rows and 20 columns Presolve time: 0.01s Presolved: 1528 rows, 925 columns, 5130 nonzeros Variable types: 0 continuous, 925 integer (925 binary) Root relaxation: objective 0.000000e+00, 155 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 (155 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 Fri Dec 14 18:21:32 2012 Optimize a model with 805 rows, 545 columns and 2575 nonzeros Presolve removed 2 rows and 10 columns Presolve time: 0.00s Presolved: 803 rows, 535 columns, 2565 nonzeros Variable types: 0 continuous, 535 integer (535 binary) Root relaxation: objective 0.000000e+00, 147 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 (147 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 Fri Dec 14 18:21:32 2012 Optimize a model with 370 rows, 305 columns and 1030 nonzeros Presolve removed 80 rows and 82 columns Presolve time: 0.00s Presolved: 290 rows, 223 columns, 870 nonzeros Variable types: 0 continuous, 223 integer (223 binary) Root relaxation: objective 0.000000e+00, 84 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 78 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (277 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 Fri Dec 14 18:21:32 2012 Optimize a model with 515 rows, 385 columns and 1545 nonzeros Presolve removed 2 rows and 6 columns Presolve time: 0.00s Presolved: 513 rows, 379 columns, 1539 nonzeros Variable types: 0 continuous, 379 integer (379 binary) Root relaxation: objective 0.000000e+00, 190 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 (547 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% optimal solution found: number of colors: 3