current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:06 2012 Optimize a model with 17297 rows, 17948 columns and 69090 nonzeros Presolve removed 18 rows and 1692 columns Presolve time: 0.12s Presolved: 17279 rows, 16256 columns, 67398 nonzeros Variable types: 0 continuous, 16256 integer (16256 binary) Root relaxation: objective 0.000000e+00, 292 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 (292 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:06 2012 Optimize a model with 8743 rows, 9065 columns and 34545 nonzeros Presolve removed 18 rows and 846 columns Presolve time: 0.08s Presolved: 8725 rows, 8219 columns, 33699 nonzeros Variable types: 0 continuous, 8219 integer (8219 binary) Root relaxation: objective 0.000000e+00, 292 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 (292 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:07 2012 Optimize a model with 4375 rows, 4529 columns and 16905 nonzeros Presolve removed 18 rows and 414 columns Presolve time: 0.03s Presolved: 4357 rows, 4115 columns, 16491 nonzeros Variable types: 0 continuous, 4115 integer (4115 binary) Root relaxation: objective 0.000000e+00, 293 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 (293 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:07 2012 Optimize a model with 2191 rows, 2261 columns and 8085 nonzeros Presolve removed 18 rows and 198 columns Presolve time: 0.01s Presolved: 2173 rows, 2063 columns, 7887 nonzeros Variable types: 0 continuous, 2063 integer (2063 binary) Root relaxation: objective 0.000000e+00, 291 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 (291 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:07 2012 Optimize a model with 1099 rows, 1127 columns and 3675 nonzeros Presolve removed 18 rows and 90 columns Presolve time: 0.00s Presolved: 1081 rows, 1037 columns, 3585 nonzeros Variable types: 0 continuous, 1037 integer (1037 binary) Root relaxation: objective 0.000000e+00, 278 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 (278 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:07 2012 Optimize a model with 553 rows, 560 columns and 1470 nonzeros Presolve removed 193 rows and 213 columns Presolve time: 0.00s Presolved: 360 rows, 347 columns, 1080 nonzeros Variable types: 0 continuous, 347 integer (347 binary) Root relaxation: objective 0.000000e+00, 184 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 0 156 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (574 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 16:27:07 2012 Optimize a model with 735 rows, 749 columns and 2205 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 717 rows, 695 columns, 2151 nonzeros Variable types: 0 continuous, 695 integer (695 binary) Root relaxation: objective 0.000000e+00, 281 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 (379 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