current bounds on the number of colors: 0 -- 177 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:38 2012 Optimize a model with 16633 rows, 15763 columns and 64944 nonzeros Presolve removed 22 rows and 1936 columns Presolve time: 0.12s Presolved: 16611 rows, 13827 columns, 63008 nonzeros Variable types: 0 continuous, 13827 integer (13827 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 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 -- 88 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:39 2012 Optimize a model with 8405 rows, 7975 columns and 32472 nonzeros Presolve removed 22 rows and 968 columns Presolve time: 0.07s Presolved: 8383 rows, 7007 columns, 31504 nonzeros Variable types: 0 continuous, 7007 integer (7007 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 0.08 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:39 2012 Optimize a model with 4291 rows, 4081 columns and 16236 nonzeros Presolve removed 22 rows and 484 columns Presolve time: 0.02s Presolved: 4269 rows, 3597 columns, 15752 nonzeros Variable types: 0 continuous, 3597 integer (3597 binary) Root relaxation: objective 0.000000e+00, 288 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 (288 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:39 2012 Optimize a model with 2234 rows, 2134 columns and 8118 nonzeros Presolve removed 22 rows and 242 columns Presolve time: 0.01s Presolved: 2212 rows, 1892 columns, 7876 nonzeros Variable types: 0 continuous, 1892 integer (1892 binary) Root relaxation: objective 0.000000e+00, 271 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 (271 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 16:24:39 2012 Optimize a model with 1112 rows, 1072 columns and 3690 nonzeros Presolve removed 22 rows and 110 columns Presolve time: 0.00s Presolved: 1090 rows, 962 columns, 3580 nonzeros Variable types: 0 continuous, 962 integer (962 binary) Root relaxation: objective 0.000000e+00, 262 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 (262 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 16:24:39 2012 Optimize a model with 551 rows, 541 columns and 1476 nonzeros Presolve removed 185 rows and 211 columns Presolve time: 0.00s Presolved: 366 rows, 330 columns, 1098 nonzeros Variable types: 0 continuous, 330 integer (330 binary) Root relaxation: objective 0.000000e+00, 166 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 0 147 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (526 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 16:24:39 2012 Optimize a model with 738 rows, 718 columns and 2214 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 716 rows, 652 columns, 2148 nonzeros Variable types: 0 continuous, 652 integer (652 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 0.00 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