current bounds on the number of colors: 0 -- 89 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:18 2012 Optimize a model with 17777 rows, 4318 columns and 56980 nonzeros Presolve time: 0.10s Presolved: 17777 rows, 4318 columns, 56980 nonzeros Variable types: 0 continuous, 4318 integer (4318 binary) Root relaxation: objective 0.000000e+00, 241 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 (422 simplex iterations) in 0.13 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 -- 44 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:18 2012 Optimize a model with 8933 rows, 2360 columns and 28490 nonzeros Presolve time: 0.03s Presolved: 8933 rows, 2360 columns, 28490 nonzeros Variable types: 0 continuous, 2360 integer (2360 binary) Root relaxation: objective 0.000000e+00, 197 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 (379 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:18 2012 Optimize a model with 4511 rows, 1381 columns and 14245 nonzeros Presolve time: 0.01s Presolved: 4511 rows, 1381 columns, 14245 nonzeros Variable types: 0 continuous, 1381 integer (1381 binary) Root relaxation: objective 0.000000e+00, 180 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 (331 simplex iterations) in 0.02 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:18 2012 Optimize a model with 2099 rows, 847 columns and 6475 nonzeros Presolve time: 0.01s Presolved: 2099 rows, 847 columns, 6475 nonzeros Variable types: 0 continuous, 847 integer (847 binary) Root relaxation: objective 0.000000e+00, 195 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 0 131 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1948 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:18 2012 Optimize a model with 893 rows, 580 columns and 2590 nonzeros Presolve removed 89 rows and 89 columns Presolve time: 0.00s Presolved: 804 rows, 491 columns, 2412 nonzeros Variable types: 0 continuous, 491 integer (491 binary) Root relaxation: objective 0.000000e+00, 90 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 89 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (366 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 19:44:18 2012 Optimize a model with 1295 rows, 669 columns and 3885 nonzeros Presolve time: 0.00s Presolved: 1295 rows, 669 columns, 3885 nonzeros Variable types: 0 continuous, 669 integer (669 binary) Root relaxation: objective 0.000000e+00, 200 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 0 178 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 0.00000 0 259 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 23 Zero half: 452 Explored 0 nodes (3333 simplex iterations) in 0.29 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 19:44:19 2012 Optimize a model with 1697 rows, 758 columns and 5180 nonzeros Presolve time: 0.00s Presolved: 1697 rows, 758 columns, 5180 nonzeros Variable types: 0 continuous, 758 integer (758 binary) Root relaxation: objective 0.000000e+00, 193 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 183 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 233 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 1s 0 0 0.00000 0 199 - 0.00000 - - 1s 0 0 0.00000 0 239 - 0.00000 - - 1s 0 0 0.00000 0 219 - 0.00000 - - 1s 0 2 0.00000 0 219 - 0.00000 - - 1s Cutting planes: Clique: 5 Zero half: 49 Explored 1035 nodes (88401 simplex iterations) in 4.85 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