current bounds on the number of colors: 0 -- 160 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:30 2012 Optimize a model with 12480 rows, 12954 columns and 49760 nonzeros Presolve removed 23 rows and 1840 columns Presolve time: 0.12s Presolved: 12457 rows, 11114 columns, 47920 nonzeros Variable types: 0 continuous, 11114 integer (11114 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 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 -- 80 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:30 2012 Optimize a model with 6320 rows, 6554 columns and 24880 nonzeros Presolve removed 23 rows and 920 columns Presolve time: 0.05s Presolved: 6297 rows, 5634 columns, 23960 nonzeros Variable types: 0 continuous, 5634 integer (5634 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 (249 simplex iterations) in 0.06 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:30 2012 Optimize a model with 3240 rows, 3354 columns and 12440 nonzeros Presolve removed 23 rows and 460 columns Presolve time: 0.02s Presolved: 3217 rows, 2894 columns, 11980 nonzeros Variable types: 0 continuous, 2894 integer (2894 binary) Root relaxation: objective 0.000000e+00, 250 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 (250 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:30 2012 Optimize a model with 1700 rows, 1754 columns and 6220 nonzeros Presolve removed 23 rows and 230 columns Presolve time: 0.01s Presolved: 1677 rows, 1524 columns, 5990 nonzeros Variable types: 0 continuous, 1524 integer (1524 binary) Root relaxation: objective 0.000000e+00, 263 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 (400 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 16:21:31 2012 Optimize a model with 930 rows, 954 columns and 3110 nonzeros Presolve removed 23 rows and 115 columns Presolve time: 0.00s Presolved: 907 rows, 839 columns, 2995 nonzeros Variable types: 0 continuous, 839 integer (839 binary) Root relaxation: objective 0.000000e+00, 238 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 (238 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:31 2012 Optimize a model with 468 rows, 474 columns and 1244 nonzeros Presolve removed 172 rows and 201 columns Presolve time: 0.00s Presolved: 296 rows, 273 columns, 888 nonzeros Variable types: 0 continuous, 273 integer (273 binary) Root relaxation: objective 0.000000e+00, 141 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 0 116 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (448 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 16:21:31 2012 Optimize a model with 622 rows, 634 columns and 1866 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 599 rows, 565 columns, 1797 nonzeros Variable types: 0 continuous, 565 integer (565 binary) Root relaxation: objective 0.000000e+00, 223 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 (223 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