current bounds on the number of colors: 0 -- 165 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:15 2012 Optimize a model with 12629 rows, 13682 columns and 50922 nonzeros Presolve removed 25 rows and 2050 columns Presolve time: 0.12s Presolved: 12604 rows, 11632 columns, 48872 nonzeros Variable types: 0 continuous, 11632 integer (11632 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 simplex iterations) in 0.15 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 -- 82 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:15 2012 Optimize a model with 6397 rows, 6917 columns and 25461 nonzeros Presolve removed 25 rows and 1025 columns Presolve time: 0.05s Presolved: 6372 rows, 5892 columns, 24436 nonzeros Variable types: 0 continuous, 5892 integer (5892 binary) Root relaxation: objective 0.000000e+00, 250 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 (250 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:15 2012 Optimize a model with 3205 rows, 3452 columns and 12420 nonzeros Presolve removed 25 rows and 500 columns Presolve time: 0.02s Presolved: 3180 rows, 2952 columns, 11920 nonzeros Variable types: 0 continuous, 2952 integer (2952 binary) Root relaxation: objective 0.000000e+00, 251 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 (251 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:15 2012 Optimize a model with 1685 rows, 1802 columns and 6210 nonzeros Presolve removed 25 rows and 250 columns Presolve time: 0.01s Presolved: 1660 rows, 1552 columns, 5960 nonzeros Variable types: 0 continuous, 1552 integer (1552 binary) Root relaxation: objective 0.000000e+00, 256 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 (256 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:15 2012 Optimize a model with 925 rows, 977 columns and 3105 nonzeros Presolve removed 25 rows and 125 columns Presolve time: 0.00s Presolved: 900 rows, 852 columns, 2980 nonzeros Variable types: 0 continuous, 852 integer (852 binary) Root relaxation: objective 0.000000e+00, 231 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 (231 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 16:22:15 2012 Optimize a model with 469 rows, 482 columns and 1242 nonzeros Presolve removed 177 rows and 208 columns Presolve time: 0.00s Presolved: 292 rows, 274 columns, 876 nonzeros Variable types: 0 continuous, 274 integer (274 binary) Root relaxation: objective 0.000000e+00, 138 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 0 117 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (403 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 Sat Dec 15 16:22:15 2012 Optimize a model with 621 rows, 647 columns and 1863 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 596 rows, 572 columns, 1788 nonzeros Variable types: 0 continuous, 572 integer (572 binary) Root relaxation: objective 0.000000e+00, 235 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 (235 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