current bounds on the number of colors: 0 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:35:37 2012 Optimize a model with 264 rows, 264 columns and 968 nonzeros Presolve removed 1 rows and 11 columns Presolve time: 0.00s Presolved: 263 rows, 253 columns, 957 nonzeros Variable types: 0 continuous, 253 integer (253 binary) Root relaxation: objective 0.000000e+00, 39 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 (39 simplex iterations) in 0.00 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 19:35:37 2012 Optimize a model with 132 rows, 132 columns and 440 nonzeros Presolve removed 1 rows and 5 columns Presolve time: 0.00s Presolved: 131 rows, 127 columns, 435 nonzeros Variable types: 0 continuous, 127 integer (127 binary) Root relaxation: objective 0.000000e+00, 45 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 (72 simplex iterations) in 0.00 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 19:35:37 2012 Optimize a model with 66 rows, 66 columns and 176 nonzeros Presolve removed 22 rows and 23 columns Presolve time: 0.00s Presolved: 44 rows, 43 columns, 132 nonzeros Variable types: 0 continuous, 43 integer (43 binary) Root relaxation: objective 0.000000e+00, 24 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 21 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (83 simplex iterations) in 0.00 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 19:35:37 2012 Optimize a model with 88 rows, 88 columns and 264 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 87 rows, 85 columns, 261 nonzeros Variable types: 0 continuous, 85 integer (85 binary) Root relaxation: objective 0.000000e+00, 37 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 (37 simplex iterations) in 0.00 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% optimal solution found: number of colors: 3