current bounds on the number of colors: 0 -- 215 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:41 2012 Optimize a model with 25788 rows, 23244 columns and 99724 nonzeros Presolve removed 25 rows and 2675 columns Presolve time: 0.13s Presolved: 25763 rows, 20569 columns, 97049 nonzeros Variable types: 0 continuous, 20569 integer (20569 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 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 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:42 2012 Optimize a model with 12882 rows, 11634 columns and 49396 nonzeros Presolve removed 25 rows and 1325 columns Presolve time: 0.12s Presolved: 12857 rows, 10309 columns, 48071 nonzeros Variable types: 0 continuous, 10309 integer (10309 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:42 2012 Optimize a model with 6429 rows, 5829 columns and 24232 nonzeros Presolve removed 25 rows and 650 columns Presolve time: 0.04s Presolved: 6404 rows, 5179 columns, 23582 nonzeros Variable types: 0 continuous, 5179 integer (5179 binary) Root relaxation: objective 0.000000e+00, 355 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 (355 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 16:34:42 2012 Optimize a model with 3322 rows, 3034 columns and 12116 nonzeros Presolve removed 25 rows and 325 columns Presolve time: 0.01s Presolved: 3297 rows, 2709 columns, 11791 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 16:34:43 2012 Optimize a model with 1649 rows, 1529 columns and 5592 nonzeros Presolve removed 25 rows and 150 columns Presolve time: 0.01s Presolved: 1624 rows, 1379 columns, 5442 nonzeros Variable types: 0 continuous, 1379 integer (1379 binary) Root relaxation: objective 0.000000e+00, 349 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 (349 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 16:34:43 2012 Optimize a model with 932 rows, 884 columns and 2796 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 907 rows, 809 columns, 2721 nonzeros Variable types: 0 continuous, 809 integer (809 binary) Root relaxation: objective 0.000000e+00, 370 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 (518 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 16:34:43 2012 Optimize a model with 454 rows, 454 columns and 932 nonzeros Presolve removed 454 rows and 454 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 16:34:43 2012 Optimize a model with 693 rows, 669 columns and 1864 nonzeros Presolve removed 221 rows and 249 columns Presolve time: 0.00s Presolved: 472 rows, 420 columns, 1416 nonzeros Variable types: 0 continuous, 420 integer (420 binary) Root relaxation: objective 0.000000e+00, 217 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 0 184 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (687 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