current bounds on the number of colors: 0 -- 176 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:19 2012 Optimize a model with 15136 rows, 15658 columns and 60368 nonzeros Presolve removed 24 rows and 2112 columns Presolve time: 0.12s Presolved: 15112 rows, 13546 columns, 58256 nonzeros Variable types: 0 continuous, 13546 integer (13546 binary) Root relaxation: objective 0.000000e+00, 272 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 (272 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 -- 88 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:19 2012 Optimize a model with 7656 rows, 7914 columns and 30184 nonzeros Presolve removed 24 rows and 1056 columns Presolve time: 0.07s Presolved: 7632 rows, 6858 columns, 29128 nonzeros Variable types: 0 continuous, 6858 integer (6858 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 simplex iterations) in 0.07 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:19 2012 Optimize a model with 3916 rows, 4042 columns and 15092 nonzeros Presolve removed 24 rows and 528 columns Presolve time: 0.02s Presolved: 3892 rows, 3514 columns, 14564 nonzeros Variable types: 0 continuous, 3514 integer (3514 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 (409 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:19 2012 Optimize a model with 2046 rows, 2106 columns and 7546 nonzeros Presolve removed 24 rows and 264 columns Presolve time: 0.01s Presolved: 2022 rows, 1842 columns, 7282 nonzeros Variable types: 0 continuous, 1842 integer (1842 binary) Root relaxation: objective 0.000000e+00, 272 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 (395 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 16:24:19 2012 Optimize a model with 1026 rows, 1050 columns and 3430 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 1002 rows, 930 columns, 3310 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Root relaxation: objective 0.000000e+00, 255 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 (255 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 16:24:19 2012 Optimize a model with 516 rows, 522 columns and 1372 nonzeros Presolve removed 178 rows and 203 columns Presolve time: 0.00s Presolved: 338 rows, 319 columns, 1014 nonzeros Variable types: 0 continuous, 319 integer (319 binary) Root relaxation: objective 0.000000e+00, 174 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 0 143 - 0.00000 - - 0s Explored 0 nodes (533 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 16:24:19 2012 Optimize a model with 686 rows, 698 columns and 2058 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 662 rows, 626 columns, 1986 nonzeros Variable types: 0 continuous, 626 integer (626 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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