current bounds on the number of colors: 0 -- 184 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:01 2012 Optimize a model with 17572 rows, 17117 columns and 69092 nonzeros Presolve removed 20 rows and 1840 columns Presolve time: 0.13s Presolved: 17552 rows, 15277 columns, 67252 nonzeros Variable types: 0 continuous, 15277 integer (15277 binary) Root relaxation: objective 0.000000e+00, 308 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 (308 simplex iterations) in 0.14 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:01 2012 Optimize a model with 8878 rows, 8653 columns and 34546 nonzeros Presolve removed 20 rows and 920 columns Presolve time: 0.08s Presolved: 8858 rows, 7733 columns, 33626 nonzeros Variable types: 0 continuous, 7733 integer (7733 binary) Root relaxation: objective 0.000000e+00, 308 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 (308 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:01 2012 Optimize a model with 4531 rows, 4421 columns and 17273 nonzeros Presolve removed 20 rows and 460 columns Presolve time: 0.03s Presolved: 4511 rows, 3961 columns, 16813 nonzeros Variable types: 0 continuous, 3961 integer (3961 binary) Root relaxation: objective 0.000000e+00, 305 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 (305 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 16:26:02 2012 Optimize a model with 2263 rows, 2213 columns and 8261 nonzeros Presolve removed 20 rows and 220 columns Presolve time: 0.01s Presolved: 2243 rows, 1993 columns, 8041 nonzeros Variable types: 0 continuous, 1993 integer (1993 binary) Root relaxation: objective 0.000000e+00, 306 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 (450 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:02 2012 Optimize a model with 1129 rows, 1109 columns and 3755 nonzeros Presolve removed 20 rows and 100 columns Presolve time: 0.00s Presolved: 1109 rows, 1009 columns, 3655 nonzeros Variable types: 0 continuous, 1009 integer (1009 binary) Root relaxation: objective 0.000000e+00, 277 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 (277 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 16:26:02 2012 Optimize a model with 562 rows, 557 columns and 1502 nonzeros Presolve removed 192 rows and 216 columns Presolve time: 0.00s Presolved: 370 rows, 341 columns, 1110 nonzeros Variable types: 0 continuous, 341 integer (341 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 0.00000 0 149 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (599 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 16:26:02 2012 Optimize a model with 751 rows, 741 columns and 2253 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 731 rows, 681 columns, 2193 nonzeros Variable types: 0 continuous, 681 integer (681 binary) Root relaxation: objective 0.000000e+00, 272 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 (272 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