current bounds on the number of colors: 0 -- 111 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:24 2012 Optimize a model with 34651 rows, 6733 columns and 109725 nonzeros Presolve time: 0.15s Presolved: 34651 rows, 6733 columns, 109725 nonzeros Variable types: 0 continuous, 6733 integer (6733 binary) Root relaxation: objective 0.000000e+00, 280 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 (597 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 -- 55 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:25 2012 Optimize a model with 17067 rows, 3625 columns and 53865 nonzeros Presolve time: 0.07s Presolved: 17067 rows, 3625 columns, 53865 nonzeros Variable types: 0 continuous, 3625 integer (3625 binary) Root relaxation: objective 0.000000e+00, 294 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 (672 simplex iterations) in 0.12 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:25 2012 Optimize a model with 8275 rows, 2071 columns and 25935 nonzeros Presolve time: 0.03s Presolved: 8275 rows, 2071 columns, 25935 nonzeros Variable types: 0 continuous, 2071 integer (2071 binary) Root relaxation: objective 0.000000e+00, 227 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 (446 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:25 2012 Optimize a model with 3879 rows, 1294 columns and 11970 nonzeros Presolve time: 0.01s Presolved: 3879 rows, 1294 columns, 11970 nonzeros Variable types: 0 continuous, 1294 integer (1294 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1030 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:25 2012 Optimize a model with 1995 rows, 961 columns and 5985 nonzeros Presolve time: 0.00s Presolved: 1995 rows, 961 columns, 5985 nonzeros Variable types: 0 continuous, 961 integer (961 binary) Root relaxation: objective 0.000000e+00, 259 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3064 simplex iterations) in 0.31 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:25 2012 Optimize a model with 2623 rows, 1072 columns and 7980 nonzeros Presolve time: 0.01s Presolved: 2623 rows, 1072 columns, 7980 nonzeros Variable types: 0 continuous, 1072 integer (1072 binary) Root relaxation: objective 0.000000e+00, 240 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 289 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 319 - 0.00000 - - 1s 0 0 0.00000 0 320 - 0.00000 - - 1s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 309 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 3s 0 0 0.00000 0 304 - 0.00000 - - 3s 0 0 0.00000 0 304 - 0.00000 - - 3s 0 2 0.00000 0 304 - 0.00000 - - 4s Cutting planes: Gomory: 1 Clique: 4 Zero half: 29 Explored 29 nodes (30123 simplex iterations) in 4.73 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:30 2012 Optimize a model with 3251 rows, 1183 columns and 9975 nonzeros Presolve time: 0.01s Presolved: 3251 rows, 1183 columns, 9975 nonzeros Variable types: 0 continuous, 1183 integer (1183 binary) Root relaxation: objective 0.000000e+00, 236 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 0 206 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 1s 0 0 0.00000 0 35 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 2 Explored 0 nodes (14004 simplex iterations) in 1.32 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: 5