current bounds on the number of colors: 0 -- 238 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:21 2012 Optimize a model with 35105 rows, 28615 columns and 132923 nonzeros Presolve removed 19 rows and 2261 columns Presolve time: 0.17s Presolved: 35086 rows, 26354 columns, 130662 nonzeros Variable types: 0 continuous, 26354 integer (26354 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 simplex iterations) in 0.20 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 -- 119 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:22 2012 Optimize a model with 17525 rows, 14335 columns and 65903 nonzeros Presolve removed 19 rows and 1121 columns Presolve time: 0.12s Presolved: 17506 rows, 13214 columns, 64782 nonzeros Variable types: 0 continuous, 13214 integer (13214 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 simplex iterations) in 0.14 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:22 2012 Optimize a model with 8735 rows, 7195 columns and 32393 nonzeros Presolve removed 19 rows and 551 columns Presolve time: 0.05s Presolved: 8716 rows, 6644 columns, 31842 nonzeros Variable types: 0 continuous, 6644 integer (6644 binary) Root relaxation: objective 0.000000e+00, 423 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 (423 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:22 2012 Optimize a model with 4340 rows, 3625 columns and 15638 nonzeros Presolve removed 19 rows and 266 columns Presolve time: 0.02s Presolved: 4321 rows, 3359 columns, 15372 nonzeros Variable types: 0 continuous, 3359 integer (3359 binary) Root relaxation: objective 0.000000e+00, 447 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 (702 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:23 2012 Optimize a model with 2289 rows, 1959 columns and 7819 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2270 rows, 1826 columns, 7686 nonzeros Variable types: 0 continuous, 1826 integer (1826 binary) Root relaxation: objective 0.000000e+00, 418 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 (609 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:23 2012 Optimize a model with 1117 rows, 1007 columns and 3351 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1098 rows, 950 columns, 3294 nonzeros Variable types: 0 continuous, 950 integer (950 binary) Root relaxation: objective 0.000000e+00, 442 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 (762 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 16:43:23 2012 Optimize a model with 531 rows, 531 columns and 1117 nonzeros Presolve removed 531 rows and 531 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 16:43:23 2012 Optimize a model with 824 rows, 769 columns and 2234 nonzeros Presolve removed 242 rows and 263 columns Presolve time: 0.00s Presolved: 582 rows, 506 columns, 1746 nonzeros Variable types: 0 continuous, 506 integer (506 binary) Root relaxation: objective 0.000000e+00, 252 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 0 215 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (804 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