current bounds on the number of colors: 0 -- 70 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:38:02 2012 Optimize a model with 8260 rows, 2684 columns and 27020 nonzeros Presolve time: 0.04s Presolved: 8260 rows, 2684 columns, 27020 nonzeros Variable types: 0 continuous, 2684 integer (2684 binary) Root relaxation: objective 0.000000e+00, 183 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 (331 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 -- 35 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:38:02 2012 Optimize a model with 4048 rows, 1424 columns and 13124 nonzeros Presolve time: 0.01s Presolved: 4048 rows, 1424 columns, 13124 nonzeros Variable types: 0 continuous, 1424 integer (1424 binary) Root relaxation: objective 0.000000e+00, 145 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 (263 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 -- 17 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:38:02 2012 Optimize a model with 1942 rows, 794 columns and 6176 nonzeros Presolve time: 0.01s Presolved: 1942 rows, 794 columns, 6176 nonzeros Variable types: 0 continuous, 794 integer (794 binary) Root relaxation: objective 0.000000e+00, 149 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 (258 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 19:38:02 2012 Optimize a model with 1006 rows, 514 columns and 3088 nonzeros Presolve time: 0.00s Presolved: 1006 rows, 514 columns, 3088 nonzeros Variable types: 0 continuous, 514 integer (514 binary) Root relaxation: objective 0.000000e+00, 160 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 83 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (948 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 -- 4 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:38:02 2012 Optimize a model with 538 rows, 374 columns and 1544 nonzeros Presolve removed 70 rows and 70 columns Presolve time: 0.00s Presolved: 468 rows, 304 columns, 1404 nonzeros Variable types: 0 continuous, 304 integer (304 binary) Root relaxation: objective 0.000000e+00, 76 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 70 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (289 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 19:38:02 2012 Optimize a model with 772 rows, 444 columns and 2316 nonzeros Presolve time: 0.00s Presolved: 772 rows, 444 columns, 2316 nonzeros Variable types: 0 continuous, 444 integer (444 binary) Root relaxation: objective 0.000000e+00, 162 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 0 138 - 0.00000 - - 0s 0 0 0.00000 0 134 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 10 Zero half: 127 Explored 0 nodes (2228 simplex iterations) in 0.12 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