current bounds on the number of colors: 0 -- 190 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 18905 rows, 18247 columns and 74195 nonzeros Presolve removed 21 rows and 1995 columns Presolve time: 0.12s Presolved: 18884 rows, 16252 columns, 72200 nonzeros Variable types: 0 continuous, 16252 integer (16252 binary) Root relaxation: objective 0.000000e+00, 309 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 (309 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 9449 rows, 9127 columns and 36707 nonzeros Presolve removed 21 rows and 987 columns Presolve time: 0.08s Presolved: 9428 rows, 8140 columns, 35720 nonzeros Variable types: 0 continuous, 8140 integer (8140 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 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 4721 rows, 4567 columns and 17963 nonzeros Presolve removed 21 rows and 483 columns Presolve time: 0.03s Presolved: 4700 rows, 4084 columns, 17480 nonzeros Variable types: 0 continuous, 4084 integer (4084 binary) Root relaxation: objective 0.000000e+00, 310 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 (310 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 2357 rows, 2287 columns and 8591 nonzeros Presolve removed 21 rows and 231 columns Presolve time: 0.01s Presolved: 2336 rows, 2056 columns, 8360 nonzeros Variable types: 0 continuous, 2056 integer (2056 binary) Root relaxation: objective 0.000000e+00, 293 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 (293 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 1175 rows, 1147 columns and 3905 nonzeros Presolve removed 21 rows and 105 columns Presolve time: 0.00s Presolved: 1154 rows, 1042 columns, 3800 nonzeros Variable types: 0 continuous, 1042 integer (1042 binary) Root relaxation: objective 0.000000e+00, 305 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 (305 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 584 rows, 577 columns and 1562 nonzeros Presolve removed 192 rows and 214 columns Presolve time: 0.00s Presolved: 392 rows, 363 columns, 1176 nonzeros Variable types: 0 continuous, 363 integer (363 binary) Root relaxation: objective 0.000000e+00, 184 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 0 159 - 0.00000 - - 0s Explored 0 nodes (584 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:32 2012 Optimize a model with 781 rows, 767 columns and 2343 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 760 rows, 704 columns, 2280 nonzeros Variable types: 0 continuous, 704 integer (704 binary) Root relaxation: objective 0.000000e+00, 286 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 (286 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% optimal solution found: number of colors: 3