current bounds on the number of colors: 0 -- 52 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:56 2012 Optimize a model with 1820 rows, 1420 columns and 6656 nonzeros Presolve removed 3 rows and 78 columns Presolve time: 0.01s Presolved: 1817 rows, 1342 columns, 6578 nonzeros Variable types: 0 continuous, 1342 integer (1342 binary) Root relaxation: objective 0.000000e+00, 94 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 (94 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 -- 26 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:56 2012 Optimize a model with 936 rows, 744 columns and 3328 nonzeros Presolve removed 3 rows and 39 columns Presolve time: 0.00s Presolved: 933 rows, 705 columns, 3289 nonzeros Variable types: 0 continuous, 705 integer (705 binary) Root relaxation: objective 0.000000e+00, 97 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 (97 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 -- 13 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:56 2012 Optimize a model with 460 rows, 380 columns and 1536 nonzeros Presolve removed 3 rows and 18 columns Presolve time: 0.00s Presolved: 457 rows, 362 columns, 1518 nonzeros Variable types: 0 continuous, 362 integer (362 binary) Root relaxation: objective 0.000000e+00, 99 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 (145 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 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:56 2012 Optimize a model with 256 rows, 224 columns and 768 nonzeros Presolve removed 3 rows and 9 columns Presolve time: 0.00s Presolved: 253 rows, 215 columns, 759 nonzeros Variable types: 0 continuous, 215 integer (215 binary) Root relaxation: objective 0.000000e+00, 111 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 (148 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 -- 3 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:56 2012 Optimize a model with 120 rows, 120 columns and 256 nonzeros Presolve removed 120 rows and 120 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:56 2012 Optimize a model with 188 rows, 172 columns and 512 nonzeros Presolve removed 52 rows and 55 columns Presolve time: 0.00s Presolved: 136 rows, 117 columns, 408 nonzeros Variable types: 0 continuous, 117 integer (117 binary) Root relaxation: objective 0.000000e+00, 57 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 49 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (209 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 - optimal solution found: number of colors: 3