current bounds on the number of colors: 0 -- 174 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:53 2012 Optimize a model with 14964 rows, 15308 columns and 59508 nonzeros Presolve removed 31 rows and 2697 columns Presolve time: 0.11s Presolved: 14933 rows, 12611 columns, 56811 nonzeros Variable types: 0 continuous, 12611 integer (12611 binary) Root relaxation: objective 0.000000e+00, 259 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 (259 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 -- 87 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:53 2012 Optimize a model with 7484 rows, 7652 columns and 29412 nonzeros Presolve removed 31 rows and 1333 columns Presolve time: 0.06s Presolved: 7453 rows, 6319 columns, 28079 nonzeros Variable types: 0 continuous, 6319 integer (6319 binary) Root relaxation: objective 0.000000e+00, 260 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 (260 simplex iterations) in 0.08 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 -- 43 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:53 2012 Optimize a model with 3744 rows, 3824 columns and 14364 nonzeros Presolve removed 31 rows and 651 columns Presolve time: 0.02s Presolved: 3713 rows, 3173 columns, 13713 nonzeros Variable types: 0 continuous, 3173 integer (3173 binary) Root relaxation: objective 0.000000e+00, 258 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 (258 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:53 2012 Optimize a model with 1874 rows, 1910 columns and 6840 nonzeros Presolve removed 31 rows and 310 columns Presolve time: 0.01s Presolved: 1843 rows, 1600 columns, 6530 nonzeros Variable types: 0 continuous, 1600 integer (1600 binary) Root relaxation: objective 0.000000e+00, 265 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 (388 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:53 2012 Optimize a model with 1024 rows, 1040 columns and 3420 nonzeros Presolve removed 31 rows and 155 columns Presolve time: 0.00s Presolved: 993 rows, 885 columns, 3265 nonzeros Variable types: 0 continuous, 885 integer (885 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 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 16:23:53 2012 Optimize a model with 514 rows, 518 columns and 1368 nonzeros Presolve removed 180 rows and 214 columns Presolve time: 0.00s Presolved: 334 rows, 304 columns, 1002 nonzeros Variable types: 0 continuous, 304 integer (304 binary) Root relaxation: objective 0.000000e+00, 158 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 0 133 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (493 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 16:23:53 2012 Optimize a model with 684 rows, 692 columns and 2052 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 653 rows, 599 columns, 1959 nonzeros Variable types: 0 continuous, 599 integer (599 binary) Root relaxation: objective 0.000000e+00, 249 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 (384 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% optimal solution found: number of colors: 3