current bounds on the number of colors: 0 -- 185 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:10 2012 Optimize a model with 16101 rows, 17193 columns and 64768 nonzeros Presolve removed 29 rows and 2668 columns Presolve time: 0.12s Presolved: 16072 rows, 14525 columns, 62100 nonzeros Variable types: 0 continuous, 14525 integer (14525 binary) Root relaxation: objective 0.000000e+00, 284 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 (284 simplex iterations) in 0.14 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:11 2012 Optimize a model with 8143 rows, 8683 columns and 32384 nonzeros Presolve removed 29 rows and 1334 columns Presolve time: 0.07s Presolved: 8114 rows, 7349 columns, 31050 nonzeros Variable types: 0 continuous, 7349 integer (7349 binary) Root relaxation: objective 0.000000e+00, 284 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 (284 simplex iterations) in 0.08 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:11 2012 Optimize a model with 4164 rows, 4428 columns and 16192 nonzeros Presolve removed 29 rows and 667 columns Presolve time: 0.02s Presolved: 4135 rows, 3761 columns, 15525 nonzeros Variable types: 0 continuous, 3761 integer (3761 binary) Root relaxation: objective 0.000000e+00, 285 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 (285 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:11 2012 Optimize a model with 2088 rows, 2208 columns and 7744 nonzeros Presolve removed 29 rows and 319 columns Presolve time: 0.01s Presolved: 2059 rows, 1889 columns, 7425 nonzeros Variable types: 0 continuous, 1889 integer (1889 binary) Root relaxation: objective 0.000000e+00, 278 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 (278 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:11 2012 Optimize a model with 1050 rows, 1098 columns and 3520 nonzeros Presolve removed 29 rows and 145 columns Presolve time: 0.00s Presolved: 1021 rows, 953 columns, 3375 nonzeros Variable types: 0 continuous, 953 integer (953 binary) Root relaxation: objective 0.000000e+00, 246 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 (246 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:11 2012 Optimize a model with 531 rows, 543 columns and 1408 nonzeros Presolve removed 193 rows and 226 columns Presolve time: 0.00s Presolved: 338 rows, 317 columns, 1014 nonzeros Variable types: 0 continuous, 317 integer (317 binary) Root relaxation: objective 0.000000e+00, 175 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 0 144 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (543 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:11 2012 Optimize a model with 704 rows, 728 columns and 2112 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 675 rows, 641 columns, 2025 nonzeros Variable types: 0 continuous, 641 integer (641 binary) Root relaxation: objective 0.000000e+00, 267 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 (369 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