current bounds on the number of colors: 0 -- 221 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:39 2012 Optimize a model with 27831 rows, 24561 columns and 107140 nonzeros Presolve removed 22 rows and 2420 columns Presolve time: 0.14s Presolved: 27809 rows, 22141 columns, 104720 nonzeros Variable types: 0 continuous, 22141 integer (22141 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 simplex iterations) in 0.17 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:40 2012 Optimize a model with 14026 rows, 12406 columns and 53570 nonzeros Presolve removed 22 rows and 1210 columns Presolve time: 0.13s Presolved: 14004 rows, 11196 columns, 52360 nonzeros Variable types: 0 continuous, 11196 integer (11196 binary) Root relaxation: objective 0.000000e+00, 363 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 (363 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:40 2012 Optimize a model with 6998 rows, 6218 columns and 26298 nonzeros Presolve removed 22 rows and 594 columns Presolve time: 0.04s Presolved: 6976 rows, 5624 columns, 25704 nonzeros Variable types: 0 continuous, 5624 integer (5624 binary) Root relaxation: objective 0.000000e+00, 369 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 0.05 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:40 2012 Optimize a model with 3484 rows, 3124 columns and 12662 nonzeros Presolve removed 22 rows and 286 columns Presolve time: 0.02s Presolved: 3462 rows, 2838 columns, 12376 nonzeros Variable types: 0 continuous, 2838 integer (2838 binary) Root relaxation: objective 0.000000e+00, 395 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 (600 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 16:36:40 2012 Optimize a model with 1727 rows, 1577 columns and 5844 nonzeros Presolve removed 22 rows and 132 columns Presolve time: 0.01s Presolved: 1705 rows, 1445 columns, 5712 nonzeros Variable types: 0 continuous, 1445 integer (1445 binary) Root relaxation: objective 0.000000e+00, 372 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 (529 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 16:36:40 2012 Optimize a model with 974 rows, 914 columns and 2922 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 952 rows, 848 columns, 2856 nonzeros Variable types: 0 continuous, 848 integer (848 binary) Root relaxation: objective 0.000000e+00, 400 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 (559 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 16:36:40 2012 Optimize a model with 472 rows, 472 columns and 974 nonzeros Presolve removed 472 rows and 472 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 16:36:40 2012 Optimize a model with 723 rows, 693 columns and 1948 nonzeros Presolve removed 225 rows and 249 columns Presolve time: 0.00s Presolved: 498 rows, 444 columns, 1494 nonzeros Variable types: 0 continuous, 444 integer (444 binary) Root relaxation: objective 0.000000e+00, 231 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 0 195 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (751 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