current bounds on the number of colors: 0 -- 161 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:37 2012 Optimize a model with 11201 rows, 13018 columns and 46000 nonzeros Presolve removed 21 rows and 1680 columns Presolve time: 0.12s Presolved: 11180 rows, 11338 columns, 44320 nonzeros Variable types: 0 continuous, 11338 integer (11338 binary) Root relaxation: objective 0.000000e+00, 244 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 (244 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 -- 80 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:37 2012 Optimize a model with 5681 rows, 6578 columns and 23000 nonzeros Presolve removed 21 rows and 840 columns Presolve time: 0.05s Presolved: 5660 rows, 5738 columns, 22160 nonzeros Variable types: 0 continuous, 5738 integer (5738 binary) Root relaxation: objective 0.000000e+00, 241 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 (241 simplex iterations) in 0.05 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:37 2012 Optimize a model with 2921 rows, 3358 columns and 11500 nonzeros Presolve removed 21 rows and 420 columns Presolve time: 0.02s Presolved: 2900 rows, 2938 columns, 11080 nonzeros Variable types: 0 continuous, 2938 integer (2938 binary) Root relaxation: objective 0.000000e+00, 243 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 (243 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:37 2012 Optimize a model with 1541 rows, 1748 columns and 5750 nonzeros Presolve removed 21 rows and 210 columns Presolve time: 0.01s Presolved: 1520 rows, 1538 columns, 5540 nonzeros Variable types: 0 continuous, 1538 integer (1538 binary) Root relaxation: objective 0.000000e+00, 236 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 (236 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:37 2012 Optimize a model with 851 rows, 943 columns and 2875 nonzeros Presolve removed 21 rows and 105 columns Presolve time: 0.00s Presolved: 830 rows, 838 columns, 2770 nonzeros Variable types: 0 continuous, 838 integer (838 binary) Root relaxation: objective 0.000000e+00, 218 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 (218 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 Sat Dec 15 16:21:37 2012 Optimize a model with 437 rows, 460 columns and 1150 nonzeros Presolve removed 169 rows and 194 columns Presolve time: 0.00s Presolved: 268 rows, 266 columns, 804 nonzeros Variable types: 0 continuous, 266 integer (266 binary) Root relaxation: objective 0.000000e+00, 143 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 0 118 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (405 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 Sat Dec 15 16:21:37 2012 Optimize a model with 575 rows, 621 columns and 1725 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 554 rows, 558 columns, 1662 nonzeros Variable types: 0 continuous, 558 integer (558 binary) Root relaxation: objective 0.000000e+00, 215 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 (215 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