current bounds on the number of colors: 0 -- 140 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:35 2012 Optimize a model with 7070 rows, 9899 columns and 30590 nonzeros Presolve removed 32 rows and 2240 columns Presolve time: 0.10s Presolved: 7038 rows, 7659 columns, 28350 nonzeros Variable types: 0 continuous, 7659 integer (7659 binary) Root relaxation: objective 0.000000e+00, 193 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 (193 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 -- 70 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:35 2012 Optimize a model with 3605 rows, 4999 columns and 15295 nonzeros Presolve removed 32 rows and 1120 columns Presolve time: 0.03s Presolved: 3573 rows, 3879 columns, 14175 nonzeros Variable types: 0 continuous, 3879 integer (3879 binary) Root relaxation: objective 0.000000e+00, 190 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 (190 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 16:18:35 2012 Optimize a model with 1823 rows, 2479 columns and 7429 nonzeros Presolve removed 32 rows and 544 columns Presolve time: 0.01s Presolved: 1791 rows, 1935 columns, 6885 nonzeros Variable types: 0 continuous, 1935 integer (1935 binary) Root relaxation: objective 0.000000e+00, 192 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 (192 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 16:18:35 2012 Optimize a model with 932 rows, 1219 columns and 3496 nonzeros Presolve removed 32 rows and 256 columns Presolve time: 0.00s Presolved: 900 rows, 963 columns, 3240 nonzeros Variable types: 0 continuous, 963 integer (963 binary) Root relaxation: objective 0.000000e+00, 180 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 (180 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:35 2012 Optimize a model with 536 rows, 659 columns and 1748 nonzeros Presolve removed 32 rows and 128 columns Presolve time: 0.00s Presolved: 504 rows, 531 columns, 1620 nonzeros Variable types: 0 continuous, 531 integer (531 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 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 16:18:35 2012 Optimize a model with 338 rows, 379 columns and 874 nonzeros Presolve removed 158 rows and 199 columns Presolve time: 0.00s Presolved: 180 rows, 180 columns, 540 nonzeros Variable types: 0 continuous, 180 integer (180 binary) Root relaxation: objective 0.000000e+00, 101 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 78 - 0.00000 - - 0s Explored 0 nodes (325 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 16:18:35 2012 Optimize a model with 437 rows, 519 columns and 1311 nonzeros Presolve removed 32 rows and 96 columns Presolve time: 0.00s Presolved: 405 rows, 423 columns, 1215 nonzeros Variable types: 0 continuous, 423 integer (423 binary) Root relaxation: objective 0.000000e+00, 167 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 (167 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