current bounds on the number of colors: 0 -- 85 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:00 2012 Optimize a model with 16717 rows, 3966 columns and 53466 nonzeros Presolve time: 0.09s Presolved: 16717 rows, 3966 columns, 53466 nonzeros Variable types: 0 continuous, 3966 integer (3966 binary) Root relaxation: objective 0.000000e+00, 228 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 (441 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 -- 42 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:01 2012 Optimize a model with 8401 rows, 2181 columns and 26733 nonzeros Presolve time: 0.03s Presolved: 8401 rows, 2181 columns, 26733 nonzeros Variable types: 0 continuous, 2181 integer (2181 binary) Root relaxation: objective 0.000000e+00, 174 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 (403 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:01 2012 Optimize a model with 4045 rows, 1246 columns and 12730 nonzeros Presolve time: 0.01s Presolved: 4045 rows, 1246 columns, 12730 nonzeros Variable types: 0 continuous, 1246 integer (1246 binary) Root relaxation: objective 0.000000e+00, 187 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 (464 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 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:01 2012 Optimize a model with 2065 rows, 821 columns and 6365 nonzeros Presolve time: 0.01s Presolved: 2065 rows, 821 columns, 6365 nonzeros Variable types: 0 continuous, 821 integer (821 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 0.00000 0 100 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1538 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:01 2012 Optimize a model with 877 rows, 566 columns and 2546 nonzeros Presolve removed 85 rows and 85 columns Presolve time: 0.00s Presolved: 792 rows, 481 columns, 2376 nonzeros Variable types: 0 continuous, 481 integer (481 binary) Root relaxation: objective 0.000000e+00, 89 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 85 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (357 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:01 2012 Optimize a model with 1273 rows, 651 columns and 3819 nonzeros Presolve time: 0.00s Presolved: 1273 rows, 651 columns, 3819 nonzeros Variable types: 0 continuous, 651 integer (651 binary) Root relaxation: objective 0.000000e+00, 177 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 144 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2646 simplex iterations) in 0.19 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:01 2012 Optimize a model with 1669 rows, 736 columns and 5092 nonzeros Presolve time: 0.00s Presolved: 1669 rows, 736 columns, 5092 nonzeros Variable types: 0 continuous, 736 integer (736 binary) Root relaxation: objective 0.000000e+00, 196 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 130 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 219 - 0.00000 - - 0s 0 0 0.00000 0 120 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 1s 0 0 0.00000 0 188 - 0.00000 - - 1s 0 0 0.00000 0 208 - 0.00000 - - 1s 0 0 0.00000 0 201 - 0.00000 - - 1s 0 2 0.00000 0 201 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 9 Explored 93 nodes (22000 simplex iterations) in 1.79 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