current bounds on the number of colors: 0 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:51 2012 Optimize a model with 2257 rows, 4511 columns and 10951 nonzeros Presolve removed 34 rows and 1598 columns Presolve time: 0.03s Presolved: 2223 rows, 2913 columns, 9353 nonzeros Variable types: 0 continuous, 2913 integer (2913 binary) Root relaxation: objective 0.000000e+00, 102 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 (102 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:51 2012 Optimize a model with 1153 rows, 2231 columns and 5359 nonzeros Presolve removed 34 rows and 782 columns Presolve time: 0.01s Presolved: 1119 rows, 1449 columns, 4577 nonzeros Variable types: 0 continuous, 1449 integer (1449 binary) Root relaxation: objective 0.000000e+00, 102 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 (102 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:51 2012 Optimize a model with 601 rows, 1091 columns and 2563 nonzeros Presolve removed 34 rows and 374 columns Presolve time: 0.00s Presolved: 567 rows, 717 columns, 2189 nonzeros Variable types: 0 continuous, 717 integer (717 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 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 Sat Dec 15 16:14:51 2012 Optimize a model with 325 rows, 521 columns and 1165 nonzeros Presolve removed 34 rows and 170 columns Presolve time: 0.00s Presolved: 291 rows, 351 columns, 995 nonzeros Variable types: 0 continuous, 351 integer (351 binary) Root relaxation: objective 0.000000e+00, 89 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 (89 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 Sat Dec 15 16:14:51 2012 Optimize a model with 187 rows, 236 columns and 466 nonzeros Presolve removed 113 rows and 156 columns Presolve time: 0.00s Presolved: 74 rows, 80 columns, 222 nonzeros Variable types: 0 continuous, 80 integer (80 binary) Root relaxation: objective 0.000000e+00, 29 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 (29 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:51 2012 Optimize a model with 141 rows, 141 columns and 233 nonzeros Presolve removed 141 rows and 141 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 2