current bounds on the number of colors: 0 -- 134 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:52 2012 Optimize a model with 6097 rows, 9067 columns and 26867 nonzeros Presolve removed 33 rows and 2211 columns Presolve time: 0.08s Presolved: 6064 rows, 6856 columns, 24656 nonzeros Variable types: 0 continuous, 6856 integer (6856 binary) Root relaxation: objective 0.000000e+00, 173 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 (173 simplex iterations) in 0.09 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 -- 67 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 3071 rows, 4511 columns and 13233 nonzeros Presolve removed 33 rows and 1089 columns Presolve time: 0.03s Presolved: 3038 rows, 3422 columns, 12144 nonzeros Variable types: 0 continuous, 3422 integer (3422 binary) Root relaxation: objective 0.000000e+00, 173 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 (173 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 -- 33 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 1558 rows, 2233 columns and 6416 nonzeros Presolve removed 33 rows and 528 columns Presolve time: 0.01s Presolved: 1525 rows, 1705 columns, 5888 nonzeros Variable types: 0 continuous, 1705 integer (1705 binary) Root relaxation: objective 0.000000e+00, 175 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 (175 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 846 rows, 1161 columns and 3208 nonzeros Presolve removed 33 rows and 264 columns Presolve time: 0.00s Presolved: 813 rows, 897 columns, 2944 nonzeros Variable types: 0 continuous, 897 integer (897 binary) Root relaxation: objective 0.000000e+00, 166 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 (166 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 490 rows, 625 columns and 1604 nonzeros Presolve removed 33 rows and 132 columns Presolve time: 0.00s Presolved: 457 rows, 493 columns, 1472 nonzeros Variable types: 0 continuous, 493 integer (493 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (141 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 16:17:53 2012 Optimize a model with 312 rows, 357 columns and 802 nonzeros Presolve removed 148 rows and 188 columns Presolve time: 0.00s Presolved: 164 rows, 169 columns, 492 nonzeros Variable types: 0 continuous, 169 integer (169 binary) Root relaxation: objective 0.000000e+00, 81 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 (239 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 16:17:53 2012 Optimize a model with 401 rows, 491 columns and 1203 nonzeros Presolve removed 33 rows and 99 columns Presolve time: 0.00s Presolved: 368 rows, 392 columns, 1104 nonzeros Variable types: 0 continuous, 392 integer (392 binary) Root relaxation: objective 0.000000e+00, 138 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 (138 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