current bounds on the number of colors: 0 -- 228 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:11 2012 Optimize a model with 32718 rows, 26277 columns and 123462 nonzeros Presolve removed 17 rows and 1938 columns Presolve time: 0.16s Presolved: 32701 rows, 24339 columns, 121524 nonzeros Variable types: 0 continuous, 24339 integer (24339 binary) Root relaxation: objective 0.000000e+00, 398 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 (398 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 -- 114 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:12 2012 Optimize a model with 16473 rows, 13281 columns and 61731 nonzeros Presolve removed 17 rows and 969 columns Presolve time: 0.12s Presolved: 16456 rows, 12312 columns, 60762 nonzeros Variable types: 0 continuous, 12312 integer (12312 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 0.13 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:12 2012 Optimize a model with 8208 rows, 6669 columns and 30324 nonzeros Presolve removed 17 rows and 476 columns Presolve time: 0.05s Presolved: 8191 rows, 6193 columns, 29848 nonzeros Variable types: 0 continuous, 6193 integer (6193 binary) Root relaxation: objective 0.000000e+00, 409 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 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:12 2012 Optimize a model with 4218 rows, 3477 columns and 15162 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4201 rows, 3239 columns, 14924 nonzeros Variable types: 0 continuous, 3239 integer (3239 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 (673 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 16:39:12 2012 Optimize a model with 2223 rows, 1881 columns and 7581 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2206 rows, 1762 columns, 7462 nonzeros Variable types: 0 continuous, 1762 integer (1762 binary) Root relaxation: objective 0.000000e+00, 396 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 (396 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 16:39:12 2012 Optimize a model with 1083 rows, 969 columns and 3249 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1066 rows, 918 columns, 3198 nonzeros Variable types: 0 continuous, 918 integer (918 binary) Root relaxation: objective 0.000000e+00, 415 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 (690 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 16:39:13 2012 Optimize a model with 513 rows, 513 columns and 1083 nonzeros Presolve removed 513 rows and 513 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 16:39:13 2012 Optimize a model with 798 rows, 741 columns and 2166 nonzeros Presolve removed 228 rows and 245 columns Presolve time: 0.00s Presolved: 570 rows, 496 columns, 1710 nonzeros Variable types: 0 continuous, 496 integer (496 binary) Root relaxation: objective 0.000000e+00, 244 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 0 206 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (819 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