current bounds on the number of colors: 0 -- 40 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012 Optimize a model with 960 rows, 846 columns and 3560 nonzeros Presolve removed 4 rows and 80 columns Presolve time: 0.01s Presolved: 956 rows, 766 columns, 3480 nonzeros Variable types: 0 continuous, 766 integer (766 binary) Root relaxation: objective 0.000000e+00, 64 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 (64 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 -- 20 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012 Optimize a model with 500 rows, 446 columns and 1780 nonzeros Presolve removed 4 rows and 40 columns Presolve time: 0.00s Presolved: 496 rows, 406 columns, 1740 nonzeros Variable types: 0 continuous, 406 integer (406 binary) Root relaxation: objective 0.000000e+00, 71 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 (71 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012 Optimize a model with 270 rows, 246 columns and 890 nonzeros Presolve removed 4 rows and 20 columns Presolve time: 0.00s Presolved: 266 rows, 226 columns, 870 nonzeros Variable types: 0 continuous, 226 integer (226 binary) Root relaxation: objective 0.000000e+00, 69 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 (69 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 Fri Dec 14 18:19:37 2012 Optimize a model with 132 rows, 126 columns and 356 nonzeros Presolve removed 40 rows and 44 columns Presolve time: 0.00s Presolved: 92 rows, 82 columns, 276 nonzeros Variable types: 0 continuous, 82 integer (82 binary) Root relaxation: objective 0.000000e+00, 39 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 36 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (115 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:37 2012 Optimize a model with 178 rows, 166 columns and 534 nonzeros Presolve removed 4 rows and 12 columns Presolve time: 0.00s Presolved: 174 rows, 154 columns, 522 nonzeros Variable types: 0 continuous, 154 integer (154 binary) Root relaxation: objective 0.000000e+00, 68 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 (68 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