current bounds on the number of colors: 0 -- 211 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:12 2012 Optimize a model with 26671 rows, 22407 columns and 101535 nonzeros Presolve removed 22 rows and 2310 columns Presolve time: 0.13s Presolved: 26649 rows, 20097 columns, 99225 nonzeros Variable types: 0 continuous, 20097 integer (20097 binary) Root relaxation: objective 0.000000e+00, 356 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 (356 simplex iterations) in 0.16 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:12 2012 Optimize a model with 13315 rows, 11224 columns and 50284 nonzeros Presolve removed 22 rows and 1144 columns Presolve time: 0.12s Presolved: 13293 rows, 10080 columns, 49140 nonzeros Variable types: 0 continuous, 10080 integer (10080 binary) Root relaxation: objective 0.000000e+00, 354 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 (354 simplex iterations) in 0.13 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:13 2012 Optimize a model with 6763 rows, 5738 columns and 25142 nonzeros Presolve removed 22 rows and 572 columns Presolve time: 0.04s Presolved: 6741 rows, 5166 columns, 24570 nonzeros Variable types: 0 continuous, 5166 integer (5166 binary) Root relaxation: objective 0.000000e+00, 346 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 (346 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:13 2012 Optimize a model with 3487 rows, 2995 columns and 12571 nonzeros Presolve removed 22 rows and 286 columns Presolve time: 0.02s Presolved: 3465 rows, 2709 columns, 12285 nonzeros Variable types: 0 continuous, 2709 integer (2709 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:13 2012 Optimize a model with 1723 rows, 1518 columns and 5802 nonzeros Presolve removed 22 rows and 132 columns Presolve time: 0.01s Presolved: 1701 rows, 1386 columns, 5670 nonzeros Variable types: 0 continuous, 1386 integer (1386 binary) Root relaxation: objective 0.000000e+00, 372 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 (372 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:13 2012 Optimize a model with 967 rows, 885 columns and 2901 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 945 rows, 819 columns, 2835 nonzeros Variable types: 0 continuous, 819 integer (819 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:13 2012 Optimize a model with 463 rows, 463 columns and 967 nonzeros Presolve removed 463 rows and 463 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 - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:13 2012 Optimize a model with 715 rows, 674 columns and 1934 nonzeros Presolve removed 219 rows and 245 columns Presolve time: 0.00s Presolved: 496 rows, 429 columns, 1488 nonzeros Variable types: 0 continuous, 429 integer (429 binary) Root relaxation: objective 0.000000e+00, 209 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 0 181 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (678 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 - optimal solution found: number of colors: 3