current bounds on the number of colors: 0 -- 67 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:42 2012 Optimize a model with 7162 rows, 2426 columns and 23496 nonzeros Presolve time: 0.04s Presolved: 7162 rows, 2426 columns, 23496 nonzeros Variable types: 0 continuous, 2426 integer (2426 binary) Root relaxation: objective 0.000000e+00, 184 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 (312 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 19:37:43 2012 Optimize a model with 3507 rows, 1287 columns and 11392 nonzeros Presolve time: 0.01s Presolved: 3507 rows, 1287 columns, 11392 nonzeros Variable types: 0 continuous, 1287 integer (1287 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (253 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 19:37:43 2012 Optimize a model with 1787 rows, 751 columns and 5696 nonzeros Presolve time: 0.01s Presolved: 1787 rows, 751 columns, 5696 nonzeros Variable types: 0 continuous, 751 integer (751 binary) Root relaxation: objective 0.000000e+00, 142 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 (260 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 19:37:43 2012 Optimize a model with 927 rows, 483 columns and 2848 nonzeros Presolve time: 0.00s Presolved: 927 rows, 483 columns, 2848 nonzeros Variable types: 0 continuous, 483 integer (483 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 0.00000 0 48 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (972 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 -- 4 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:37:43 2012 Optimize a model with 497 rows, 349 columns and 1424 nonzeros Presolve removed 67 rows and 67 columns Presolve time: 0.00s Presolved: 430 rows, 282 columns, 1290 nonzeros Variable types: 0 continuous, 282 integer (282 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 67 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (294 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 19:37:43 2012 Optimize a model with 712 rows, 416 columns and 2136 nonzeros Presolve time: 0.00s Presolved: 712 rows, 416 columns, 2136 nonzeros Variable types: 0 continuous, 416 integer (416 binary) Root relaxation: objective 0.000000e+00, 155 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 0 126 - 0.00000 - - 0s 0 0 0.00000 0 130 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1254 simplex iterations) in 0.06 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