current bounds on the number of colors: 0 -- 111 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:48 2012 Optimize a model with 33056 rows, 6704 columns and 104940 nonzeros Presolve time: 0.15s Presolved: 33056 rows, 6704 columns, 104940 nonzeros Variable types: 0 continuous, 6704 integer (6704 binary) Root relaxation: objective 0.000000e+00, 314 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 (530 simplex iterations) in 0.21 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 20:05:48 2012 Optimize a model with 16284 rows, 3596 columns and 51516 nonzeros Presolve time: 0.07s Presolved: 16284 rows, 3596 columns, 51516 nonzeros Variable types: 0 continuous, 3596 integer (3596 binary) Root relaxation: objective 0.000000e+00, 254 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 (465 simplex iterations) in 0.10 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 20:05:48 2012 Optimize a model with 7898 rows, 2042 columns and 24804 nonzeros Presolve time: 0.02s Presolved: 7898 rows, 2042 columns, 24804 nonzeros Variable types: 0 continuous, 2042 integer (2042 binary) Root relaxation: objective 0.000000e+00, 231 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 (570 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:49 2012 Optimize a model with 3705 rows, 1265 columns and 11448 nonzeros Presolve time: 0.01s Presolved: 3705 rows, 1265 columns, 11448 nonzeros Variable types: 0 continuous, 1265 integer (1265 binary) Root relaxation: objective 0.000000e+00, 232 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 (931 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:05:49 2012 Optimize a model with 1908 rows, 932 columns and 5724 nonzeros Presolve time: 0.00s Presolved: 1908 rows, 932 columns, 5724 nonzeros Variable types: 0 continuous, 932 integer (932 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 0 186 - 0.00000 - - 0s 0 0 0.00000 0 279 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4371 simplex iterations) in 0.36 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 20:05:49 2012 Optimize a model with 2507 rows, 1043 columns and 7632 nonzeros Presolve time: 0.01s Presolved: 2507 rows, 1043 columns, 7632 nonzeros Variable types: 0 continuous, 1043 integer (1043 binary) Root relaxation: objective 0.000000e+00, 228 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 0 124 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 265 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 295 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 0 0.00000 0 268 - 0.00000 - - 1s 0 0 0.00000 0 294 - 0.00000 - - 2s 0 0 0.00000 0 295 - 0.00000 - - 2s 0 0 0.00000 0 295 - 0.00000 - - 2s 0 2 0.00000 0 295 - 0.00000 - - 3s Cutting planes: Clique: 15 Zero half: 26 Explored 37 nodes (30303 simplex iterations) in 3.66 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 20:05:53 2012 Optimize a model with 3106 rows, 1154 columns and 9540 nonzeros Presolve time: 0.01s Presolved: 3106 rows, 1154 columns, 9540 nonzeros Variable types: 0 continuous, 1154 integer (1154 binary) Root relaxation: objective 0.000000e+00, 228 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 0 105 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 3 Clique: 19 Zero half: 41 Explored 0 nodes (2572 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% optimal solution found: number of colors: 5