current bounds on the number of colors: 0 -- 248 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:35 2012 Optimize a model with 38936 rows, 31064 columns and 146816 nonzeros Presolve removed 17 rows and 2108 columns Presolve time: 0.20s Presolved: 38919 rows, 28956 columns, 144708 nonzeros Variable types: 0 continuous, 28956 integer (28956 binary) Root relaxation: objective 0.000000e+00, 448 iterations, 0.02 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 (448 simplex iterations) in 0.23 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 19592 rows, 15688 columns and 73408 nonzeros Presolve removed 17 rows and 1054 columns Presolve time: 0.13s Presolved: 19575 rows, 14634 columns, 72354 nonzeros Variable types: 0 continuous, 14634 integer (14634 binary) Root relaxation: objective 0.000000e+00, 448 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 (448 simplex iterations) in 0.15 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 9920 rows, 8000 columns and 36704 nonzeros Presolve removed 17 rows and 527 columns Presolve time: 0.06s Presolved: 9903 rows, 7473 columns, 36177 nonzeros Variable types: 0 continuous, 7473 integer (7473 binary) Root relaxation: objective 0.000000e+00, 455 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 (455 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 4928 rows, 4032 columns and 17760 nonzeros Presolve removed 17 rows and 255 columns Presolve time: 0.02s Presolved: 4911 rows, 3777 columns, 17505 nonzeros Variable types: 0 continuous, 3777 integer (3777 binary) Root relaxation: objective 0.000000e+00, 461 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 (461 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 2432 rows, 2048 columns and 8288 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2415 rows, 1929 columns, 8169 nonzeros Variable types: 0 continuous, 1929 integer (1929 binary) Root relaxation: objective 0.000000e+00, 438 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 (438 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 1184 rows, 1056 columns and 3552 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1167 rows, 1005 columns, 3501 nonzeros Variable types: 0 continuous, 1005 integer (1005 binary) Root relaxation: objective 0.000000e+00, 416 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 (416 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 560 rows, 560 columns and 1184 nonzeros Presolve removed 560 rows and 560 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:36 2012 Optimize a model with 872 rows, 808 columns and 2368 nonzeros Presolve removed 252 rows and 271 columns Presolve time: 0.00s Presolved: 620 rows, 537 columns, 1860 nonzeros Variable types: 0 continuous, 537 integer (537 binary) Root relaxation: objective 0.000000e+00, 246 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 0 222 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (865 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 - optimal solution found: number of colors: 3