current bounds on the number of colors: 0 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:50 2012 Optimize a model with 2068 rows, 4460 columns and 10340 nonzeros Presolve removed 36 rows and 1692 columns Presolve time: 0.02s Presolved: 2032 rows, 2768 columns, 8648 nonzeros Variable types: 0 continuous, 2768 integer (2768 binary) Root relaxation: objective 0.000000e+00, 92 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 (92 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 16:14:50 2012 Optimize a model with 1060 rows, 2204 columns and 5060 nonzeros Presolve removed 36 rows and 828 columns Presolve time: 0.01s Presolved: 1024 rows, 1376 columns, 4232 nonzeros Variable types: 0 continuous, 1376 integer (1376 binary) Root relaxation: objective 0.000000e+00, 92 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 (92 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 16:14:50 2012 Optimize a model with 556 rows, 1076 columns and 2420 nonzeros Presolve removed 36 rows and 396 columns Presolve time: 0.00s Presolved: 520 rows, 680 columns, 2024 nonzeros Variable types: 0 continuous, 680 integer (680 binary) Root relaxation: objective 0.000000e+00, 91 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 (91 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 16:14:50 2012 Optimize a model with 304 rows, 512 columns and 1100 nonzeros Presolve removed 36 rows and 180 columns Presolve time: 0.00s Presolved: 268 rows, 332 columns, 920 nonzeros Variable types: 0 continuous, 332 integer (332 binary) Root relaxation: objective 0.000000e+00, 86 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 (86 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 16:14:50 2012 Optimize a model with 178 rows, 230 columns and 440 nonzeros Presolve removed 114 rows and 160 columns Presolve time: 0.00s Presolved: 64 rows, 70 columns, 192 nonzeros Variable types: 0 continuous, 70 integer (70 binary) Root relaxation: objective 0.000000e+00, 25 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 (25 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 16:14:50 2012 Optimize a model with 136 rows, 136 columns and 220 nonzeros Presolve removed 136 rows and 136 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