current bounds on the number of colors: 0 -- 234 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:42 2012 Optimize a model with 33930 rows, 27666 columns and 128466 nonzeros Presolve removed 15 rows and 1755 columns Presolve time: 0.17s Presolved: 33915 rows, 25911 columns, 126711 nonzeros Variable types: 0 continuous, 25911 integer (25911 binary) Root relaxation: objective 0.000000e+00, 442 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 (442 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:43 2012 Optimize a model with 16938 rows, 13860 columns and 63684 nonzeros Presolve removed 15 rows and 870 columns Presolve time: 0.12s Presolved: 16923 rows, 12990 columns, 62814 nonzeros Variable types: 0 continuous, 12990 integer (12990 binary) Root relaxation: objective 0.000000e+00, 445 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 (445 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:43 2012 Optimize a model with 8586 rows, 7074 columns and 31842 nonzeros Presolve removed 15 rows and 435 columns Presolve time: 0.05s Presolved: 8571 rows, 6639 columns, 31407 nonzeros Variable types: 0 continuous, 6639 integer (6639 binary) Root relaxation: objective 0.000000e+00, 444 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 (444 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:43 2012 Optimize a model with 4266 rows, 3564 columns and 15372 nonzeros Presolve removed 15 rows and 210 columns Presolve time: 0.02s Presolved: 4251 rows, 3354 columns, 15162 nonzeros Variable types: 0 continuous, 3354 integer (3354 binary) Root relaxation: objective 0.000000e+00, 439 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 (668 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:43 2012 Optimize a model with 2250 rows, 1926 columns and 7686 nonzeros Presolve removed 15 rows and 105 columns Presolve time: 0.01s Presolved: 2235 rows, 1821 columns, 7581 nonzeros Variable types: 0 continuous, 1821 integer (1821 binary) Root relaxation: objective 0.000000e+00, 417 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 (603 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:43 2012 Optimize a model with 1098 rows, 990 columns and 3294 nonzeros Presolve removed 15 rows and 45 columns Presolve time: 0.00s Presolved: 1083 rows, 945 columns, 3249 nonzeros Variable types: 0 continuous, 945 integer (945 binary) Root relaxation: objective 0.000000e+00, 414 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 (414 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 16:41:43 2012 Optimize a model with 522 rows, 522 columns and 1098 nonzeros Presolve removed 522 rows and 522 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 16:41:43 2012 Optimize a model with 810 rows, 756 columns and 2196 nonzeros Presolve removed 240 rows and 258 columns Presolve time: 0.00s Presolved: 570 rows, 498 columns, 1710 nonzeros Variable types: 0 continuous, 498 integer (498 binary) Root relaxation: objective 0.000000e+00, 243 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 0 210 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (796 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