current bounds on the number of colors: 0 -- 175 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:10 2012 Optimize a model with 14530 rows, 15390 columns and 58290 nonzeros Presolve removed 20 rows and 1740 columns Presolve time: 0.12s Presolved: 14510 rows, 13650 columns, 56550 nonzeros Variable types: 0 continuous, 13650 integer (13650 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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 -- 87 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:11 2012 Optimize a model with 7270 rows, 7690 columns and 28810 nonzeros Presolve removed 20 rows and 860 columns Presolve time: 0.06s Presolved: 7250 rows, 6830 columns, 27950 nonzeros Variable types: 0 continuous, 6830 integer (6830 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 simplex iterations) in 0.07 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 -- 43 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:11 2012 Optimize a model with 3640 rows, 3840 columns and 14070 nonzeros Presolve removed 20 rows and 420 columns Presolve time: 0.02s Presolved: 3620 rows, 3420 columns, 13650 nonzeros Variable types: 0 continuous, 3420 integer (3420 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:11 2012 Optimize a model with 1825 rows, 1915 columns and 6700 nonzeros Presolve removed 20 rows and 200 columns Presolve time: 0.01s Presolved: 1805 rows, 1715 columns, 6500 nonzeros Variable types: 0 continuous, 1715 integer (1715 binary) Root relaxation: objective 0.000000e+00, 276 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 (276 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 16:24:11 2012 Optimize a model with 1000 rows, 1040 columns and 3350 nonzeros Presolve removed 20 rows and 100 columns Presolve time: 0.00s Presolved: 980 rows, 940 columns, 3250 nonzeros Variable types: 0 continuous, 940 integer (940 binary) Root relaxation: objective 0.000000e+00, 253 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 (253 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 16:24:11 2012 Optimize a model with 505 rows, 515 columns and 1340 nonzeros Presolve removed 187 rows and 213 columns Presolve time: 0.00s Presolved: 318 rows, 302 columns, 954 nonzeros Variable types: 0 continuous, 302 integer (302 binary) Root relaxation: objective 0.000000e+00, 155 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 0 132 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (490 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 16:24:11 2012 Optimize a model with 670 rows, 690 columns and 2010 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 650 rows, 630 columns, 1950 nonzeros Variable types: 0 continuous, 630 integer (630 binary) Root relaxation: objective 0.000000e+00, 265 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 (265 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