current bounds on the number of colors: 0 -- 142 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 6035 rows, 10165 columns and 27761 nonzeros Presolve removed 46 rows and 3266 columns Presolve time: 0.09s Presolved: 5989 rows, 6899 columns, 24495 nonzeros Variable types: 0 continuous, 6899 integer (6899 binary) Root relaxation: objective 0.000000e+00, 156 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 (156 simplex iterations) in 0.10 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 -- 71 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 3047 rows, 5053 columns and 13685 nonzeros Presolve removed 46 rows and 1610 columns Presolve time: 0.03s Presolved: 3001 rows, 3443 columns, 12075 nonzeros Variable types: 0 continuous, 3443 integer (3443 binary) Root relaxation: objective 0.000000e+00, 157 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 (157 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 -- 35 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 1553 rows, 2497 columns and 6647 nonzeros Presolve removed 46 rows and 782 columns Presolve time: 0.01s Presolved: 1507 rows, 1715 columns, 5865 nonzeros Variable types: 0 continuous, 1715 integer (1715 binary) Root relaxation: objective 0.000000e+00, 157 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 (157 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 806 rows, 1219 columns and 3128 nonzeros Presolve removed 46 rows and 368 columns Presolve time: 0.00s Presolved: 760 rows, 851 columns, 2760 nonzeros Variable types: 0 continuous, 851 integer (851 binary) Root relaxation: objective 0.000000e+00, 154 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 (154 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 474 rows, 651 columns and 1564 nonzeros Presolve removed 46 rows and 184 columns Presolve time: 0.00s Presolved: 428 rows, 467 columns, 1380 nonzeros Variable types: 0 continuous, 467 integer (467 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (138 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 308 rows, 367 columns and 782 nonzeros Presolve removed 154 rows and 206 columns Presolve time: 0.00s Presolved: 154 rows, 161 columns, 462 nonzeros Variable types: 0 continuous, 161 integer (161 binary) Root relaxation: objective 0.000000e+00, 79 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 41 - 0.00000 - - 0s Explored 0 nodes (223 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:51 2012 Optimize a model with 391 rows, 509 columns and 1173 nonzeros Presolve removed 46 rows and 138 columns Presolve time: 0.00s Presolved: 345 rows, 371 columns, 1035 nonzeros Variable types: 0 continuous, 371 integer (371 binary) Root relaxation: objective 0.000000e+00, 132 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 (132 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