current bounds on the number of colors: 0 -- 115 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:46 2012 Optimize a model with 38305 rows, 7225 columns and 121125 nonzeros Presolve time: 0.15s Presolved: 38305 rows, 7225 columns, 121125 nonzeros Variable types: 0 continuous, 7225 integer (7225 binary) Root relaxation: objective 0.000000e+00, 284 iterations, 0.04 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 (529 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:47 2012 Optimize a model with 18875 rows, 3890 columns and 59500 nonzeros Presolve time: 0.08s Presolved: 18875 rows, 3890 columns, 59500 nonzeros Variable types: 0 continuous, 3890 integer (3890 binary) Root relaxation: objective 0.000000e+00, 260 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 (500 simplex iterations) in 0.11 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:47 2012 Optimize a model with 9495 rows, 2280 columns and 29750 nonzeros Presolve time: 0.03s Presolved: 9495 rows, 2280 columns, 29750 nonzeros Variable types: 0 continuous, 2280 integer (2280 binary) Root relaxation: objective 0.000000e+00, 244 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 (436 simplex iterations) in 0.05 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 Thu Dec 13 20:21:47 2012 Optimize a model with 4805 rows, 1475 columns and 14875 nonzeros Presolve time: 0.01s Presolved: 4805 rows, 1475 columns, 14875 nonzeros Variable types: 0 continuous, 1475 integer (1475 binary) Root relaxation: objective 0.000000e+00, 239 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 (949 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:47 2012 Optimize a model with 2125 rows, 1015 columns and 6375 nonzeros Presolve time: 0.01s Presolved: 2125 rows, 1015 columns, 6375 nonzeros Variable types: 0 continuous, 1015 integer (1015 binary) Root relaxation: objective 0.000000e+00, 250 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 0 172 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4182 simplex iterations) in 0.39 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: 3 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:48 2012 Optimize a model with 3465 rows, 1245 columns and 10625 nonzeros Presolve time: 0.01s Presolved: 3465 rows, 1245 columns, 10625 nonzeros Variable types: 0 continuous, 1245 integer (1245 binary) Root relaxation: objective 0.000000e+00, 246 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 0.00000 0 251 - 0.00000 - - 0s 0 0 0.00000 0 156 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 1s 0 0 0.00000 0 150 - 0.00000 - - 1s 0 0 0.00000 0 142 - 0.00000 - - 1s 0 0 0.00000 0 132 - 0.00000 - - 1s 0 0 0.00000 0 138 - 0.00000 - - 2s 0 0 0.00000 0 126 - 0.00000 - - 2s 0 0 0.00000 0 130 - 0.00000 - - 2s 0 0 0.00000 0 118 - 0.00000 - - 2s 0 0 0.00000 0 120 - 0.00000 - - 2s 0 0 0.00000 0 250 - 0.00000 - - 3s 0 0 0.00000 0 250 - 0.00000 - - 3s 0 2 0.00000 0 250 - 0.00000 - - 3s 357 31 0.00000 24 102 - 0.00000 - 54.0 5s H 517 0 0.0000000 0.00000 0.0% 52.3 5s Cutting planes: Clique: 2 Zero half: 3 Explored 517 nodes (62104 simplex iterations) in 5.33 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:53 2012 Optimize a model with 2795 rows, 1130 columns and 8500 nonzeros Presolve time: 0.01s Presolved: 2795 rows, 1130 columns, 8500 nonzeros Variable types: 0 continuous, 1130 integer (1130 binary) Root relaxation: objective 0.000000e+00, 247 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 0s 0 0 0.00000 0 329 - 0.00000 - - 1s 0 0 0.00000 0 319 - 0.00000 - - 1s 0 0 0.00000 0 317 - 0.00000 - - 2s 0 0 0.00000 0 312 - 0.00000 - - 2s 0 0 0.00000 0 312 - 0.00000 - - 2s 0 0 0.00000 0 317 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 4s 0 0 0.00000 0 321 - 0.00000 - - 4s 0 0 0.00000 0 321 - 0.00000 - - 4s 0 2 0.00000 0 321 - 0.00000 - - 5s Cutting planes: Clique: 13 Zero half: 25 Explored 17 nodes (33886 simplex iterations) in 5.65 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5