current bounds on the number of colors: 0 -- 203 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:00 2012 Optimize a model with 22524 rows, 20724 columns and 87466 nonzeros Presolve removed 23 rows and 2323 columns Presolve time: 0.13s Presolved: 22501 rows, 18401 columns, 85143 nonzeros Variable types: 0 continuous, 18401 integer (18401 binary) Root relaxation: objective 0.000000e+00, 338 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 (338 simplex iterations) in 0.15 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 -- 101 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:00 2012 Optimize a model with 11253 rows, 10371 columns and 43300 nonzeros Presolve removed 23 rows and 1150 columns Presolve time: 0.10s Presolved: 11230 rows, 9221 columns, 42150 nonzeros Variable types: 0 continuous, 9221 integer (9221 binary) Root relaxation: objective 0.000000e+00, 339 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 (339 simplex iterations) in 0.11 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:00 2012 Optimize a model with 5728 rows, 5296 columns and 21650 nonzeros Presolve removed 23 rows and 575 columns Presolve time: 0.03s Presolved: 5705 rows, 4721 columns, 21075 nonzeros Variable types: 0 continuous, 4721 integer (4721 binary) Root relaxation: objective 0.000000e+00, 339 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 (339 simplex iterations) in 0.04 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:00 2012 Optimize a model with 2855 rows, 2657 columns and 10392 nonzeros Presolve removed 23 rows and 276 columns Presolve time: 0.01s Presolved: 2832 rows, 2381 columns, 10116 nonzeros Variable types: 0 continuous, 2381 integer (2381 binary) Root relaxation: objective 0.000000e+00, 341 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 (341 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:00 2012 Optimize a model with 1529 rows, 1439 columns and 5196 nonzeros Presolve removed 23 rows and 138 columns Presolve time: 0.01s Presolved: 1506 rows, 1301 columns, 5058 nonzeros Variable types: 0 continuous, 1301 integer (1301 binary) Root relaxation: objective 0.000000e+00, 334 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 (334 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 16:31:01 2012 Optimize a model with 866 rows, 830 columns and 2598 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 843 rows, 761 columns, 2529 nonzeros Variable types: 0 continuous, 761 integer (761 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 simplex iterations) in 0.00 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 16:31:01 2012 Optimize a model with 424 rows, 424 columns and 866 nonzeros Presolve removed 424 rows and 424 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 16:31:01 2012 Optimize a model with 645 rows, 627 columns and 1732 nonzeros Presolve removed 211 rows and 238 columns Presolve time: 0.00s Presolved: 434 rows, 389 columns, 1302 nonzeros Variable types: 0 continuous, 389 integer (389 binary) Root relaxation: objective 0.000000e+00, 187 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 0 169 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (633 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