current bounds on the number of colors: 0 -- 233 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:18 2012 Optimize a model with 33293 rows, 27313 columns and 126208 nonzeros Presolve removed 24 rows and 2784 columns Presolve time: 0.16s Presolved: 33269 rows, 24529 columns, 123424 nonzeros Variable types: 0 continuous, 24529 integer (24529 binary) Root relaxation: objective 0.000000e+00, 399 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 (399 simplex iterations) in 0.19 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:18 2012 Optimize a model with 16763 rows, 13799 columns and 63104 nonzeros Presolve removed 24 rows and 1392 columns Presolve time: 0.12s Presolved: 16739 rows, 12407 columns, 61712 nonzeros Variable types: 0 continuous, 12407 integer (12407 binary) Root relaxation: objective 0.000000e+00, 400 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 (400 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 16:41:19 2012 Optimize a model with 8498 rows, 7042 columns and 31552 nonzeros Presolve removed 24 rows and 696 columns Presolve time: 0.05s Presolved: 8474 rows, 6346 columns, 30856 nonzeros Variable types: 0 continuous, 6346 integer (6346 binary) Root relaxation: objective 0.000000e+00, 398 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 (398 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 16:41:19 2012 Optimize a model with 4223 rows, 3547 columns and 15232 nonzeros Presolve removed 24 rows and 336 columns Presolve time: 0.02s Presolved: 4199 rows, 3211 columns, 14896 nonzeros Variable types: 0 continuous, 3211 integer (3211 binary) Root relaxation: objective 0.000000e+00, 416 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 (652 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 16:41:19 2012 Optimize a model with 2228 rows, 1916 columns and 7616 nonzeros Presolve removed 24 rows and 168 columns Presolve time: 0.01s Presolved: 2204 rows, 1748 columns, 7448 nonzeros Variable types: 0 continuous, 1748 integer (1748 binary) Root relaxation: objective 0.000000e+00, 425 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 (425 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 16:41:19 2012 Optimize a model with 1088 rows, 984 columns and 3264 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 1064 rows, 912 columns, 3192 nonzeros Variable types: 0 continuous, 912 integer (912 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 (644 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 16:41:19 2012 Optimize a model with 518 rows, 518 columns and 1088 nonzeros Presolve removed 518 rows and 518 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 16:41:19 2012 Optimize a model with 803 rows, 751 columns and 2176 nonzeros Presolve removed 233 rows and 257 columns Presolve time: 0.00s Presolved: 570 rows, 494 columns, 1710 nonzeros Variable types: 0 continuous, 494 integer (494 binary) Root relaxation: objective 0.000000e+00, 238 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 0 205 - 0.00000 - - 0s Explored 0 nodes (762 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