current bounds on the number of colors: 0 -- 66 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:35 2012 Optimize a model with 7689 rows, 2409 columns and 25047 nonzeros Presolve time: 0.04s Presolved: 7689 rows, 2409 columns, 25047 nonzeros Variable types: 0 continuous, 2409 integer (2409 binary) Root relaxation: objective 0.000000e+00, 170 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 (291 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 -- 33 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:35 2012 Optimize a model with 3762 rows, 1287 columns and 12144 nonzeros Presolve time: 0.01s Presolved: 3762 rows, 1287 columns, 12144 nonzeros Variable types: 0 continuous, 1287 integer (1287 binary) Root relaxation: objective 0.000000e+00, 151 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 (270 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 -- 16 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:35 2012 Optimize a model with 1914 rows, 759 columns and 6072 nonzeros Presolve time: 0.01s Presolved: 1914 rows, 759 columns, 6072 nonzeros Variable types: 0 continuous, 759 integer (759 binary) Root relaxation: objective 0.000000e+00, 138 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 (248 simplex iterations) in 0.01 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 -- 8 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:35 2012 Optimize a model with 990 rows, 495 columns and 3036 nonzeros Presolve time: 0.00s Presolved: 990 rows, 495 columns, 3036 nonzeros Variable types: 0 continuous, 495 integer (495 binary) Root relaxation: objective 0.000000e+00, 141 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 91 - 0.00000 - - 0s 0 0 0.00000 0 102 - 0.00000 - - 0s 0 0 0.00000 0 97 - 0.00000 - - 0s 0 0 0.00000 0 109 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 2 Zero half: 3 Explored 0 nodes (2525 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 -- 4 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:35 2012 Optimize a model with 528 rows, 363 columns and 1518 nonzeros Presolve removed 66 rows and 66 columns Presolve time: 0.00s Presolved: 462 rows, 297 columns, 1386 nonzeros Variable types: 0 continuous, 297 integer (297 binary) Root relaxation: objective 0.000000e+00, 71 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 66 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (268 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 -- 4 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:35 2012 Optimize a model with 759 rows, 429 columns and 2277 nonzeros Presolve time: 0.00s Presolved: 759 rows, 429 columns, 2277 nonzeros Variable types: 0 continuous, 429 integer (429 binary) Root relaxation: objective 0.000000e+00, 163 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 0 108 - 0.00000 - - 0s 0 0 0.00000 0 120 - 0.00000 - - 0s 0 0 0.00000 0 174 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 5 Zero half: 218 Explored 0 nodes (2069 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 4