current bounds on the number of colors: 0 -- 157 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 9907 rows, 12371 columns and 41496 nonzeros Presolve removed 27 rows and 2106 columns Presolve time: 0.11s Presolved: 9880 rows, 10265 columns, 39390 nonzeros Variable types: 0 continuous, 10265 integer (10265 binary) Root relaxation: objective 0.000000e+00, 224 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 (327 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 -- 78 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 5032 rows, 6248 columns and 20748 nonzeros Presolve removed 27 rows and 1053 columns Presolve time: 0.04s Presolved: 5005 rows, 5195 columns, 19695 nonzeros Variable types: 0 continuous, 5195 integer (5195 binary) Root relaxation: objective 0.000000e+00, 222 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 (322 simplex iterations) in 0.05 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 -- 39 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 2532 rows, 3108 columns and 10108 nonzeros Presolve removed 27 rows and 513 columns Presolve time: 0.01s Presolved: 2505 rows, 2595 columns, 9595 nonzeros Variable types: 0 continuous, 2595 integer (2595 binary) Root relaxation: objective 0.000000e+00, 224 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 (323 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 1282 rows, 1538 columns and 4788 nonzeros Presolve removed 27 rows and 243 columns Presolve time: 0.01s Presolved: 1255 rows, 1295 columns, 4545 nonzeros Variable types: 0 continuous, 1295 integer (1295 binary) Root relaxation: objective 0.000000e+00, 217 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 657 rows, 753 columns and 2128 nonzeros Presolve removed 27 rows and 108 columns Presolve time: 0.00s Presolved: 630 rows, 645 columns, 2020 nonzeros Variable types: 0 continuous, 645 integer (645 binary) Root relaxation: objective 0.000000e+00, 210 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 (210 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 407 rows, 439 columns and 1064 nonzeros Presolve removed 177 rows and 214 columns Presolve time: 0.00s Presolved: 230 rows, 225 columns, 690 nonzeros Variable types: 0 continuous, 225 integer (225 binary) Root relaxation: objective 0.000000e+00, 128 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 0 102 - 0.00000 - - 0s Explored 0 nodes (390 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:55 2012 Optimize a model with 532 rows, 596 columns and 1596 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 505 rows, 515 columns, 1515 nonzeros Variable types: 0 continuous, 515 integer (515 binary) Root relaxation: objective 0.000000e+00, 220 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 (220 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