current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:40 2012 Optimize a model with 15743 rows, 16733 columns and 63245 nonzeros Presolve removed 25 rows and 2275 columns Presolve time: 0.12s Presolved: 15718 rows, 14458 columns, 60970 nonzeros Variable types: 0 continuous, 14458 integer (14458 binary) Root relaxation: objective 0.000000e+00, 287 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 (287 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:40 2012 Optimize a model with 7877 rows, 8361 columns and 31275 nonzeros Presolve removed 25 rows and 1125 columns Presolve time: 0.07s Presolved: 7852 rows, 7236 columns, 30150 nonzeros Variable types: 0 continuous, 7236 integer (7236 binary) Root relaxation: objective 0.000000e+00, 285 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 (285 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:40 2012 Optimize a model with 3944 rows, 4175 columns and 15290 nonzeros Presolve removed 25 rows and 550 columns Presolve time: 0.02s Presolved: 3919 rows, 3625 columns, 14740 nonzeros Variable types: 0 continuous, 3625 integer (3625 binary) Root relaxation: objective 0.000000e+00, 284 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 (284 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 16:25:40 2012 Optimize a model with 2063 rows, 2173 columns and 7645 nonzeros Presolve removed 25 rows and 275 columns Presolve time: 0.01s Presolved: 2038 rows, 1898 columns, 7370 nonzeros Variable types: 0 continuous, 1898 integer (1898 binary) Root relaxation: objective 0.000000e+00, 278 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 (278 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 16:25:40 2012 Optimize a model with 1037 rows, 1081 columns and 3475 nonzeros Presolve removed 25 rows and 125 columns Presolve time: 0.00s Presolved: 1012 rows, 956 columns, 3350 nonzeros Variable types: 0 continuous, 956 integer (956 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 0.01 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 16:25:40 2012 Optimize a model with 524 rows, 535 columns and 1390 nonzeros Presolve removed 186 rows and 213 columns Presolve time: 0.00s Presolved: 338 rows, 322 columns, 1014 nonzeros Variable types: 0 continuous, 322 integer (322 binary) Root relaxation: objective 0.000000e+00, 161 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 0 139 - 0.00000 - - 0s Explored 0 nodes (545 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 16:25:40 2012 Optimize a model with 695 rows, 717 columns and 2085 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 670 rows, 642 columns, 2010 nonzeros Variable types: 0 continuous, 642 integer (642 binary) Root relaxation: objective 0.000000e+00, 272 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 (272 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