current bounds on the number of colors: 0 -- 246 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:34 2012 Optimize a model with 36408 rows, 30552 columns and 138744 nonzeros Presolve removed 31 rows and 3813 columns Presolve time: 0.16s Presolved: 36377 rows, 26739 columns, 134931 nonzeros Variable types: 0 continuous, 26739 integer (26739 binary) Root relaxation: objective 0.000000e+00, 425 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 (645 simplex iterations) in 0.22 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:34 2012 Optimize a model with 18180 rows, 15300 columns and 68808 nonzeros Presolve removed 31 rows and 1891 columns Presolve time: 0.13s Presolved: 18149 rows, 13409 columns, 66917 nonzeros Variable types: 0 continuous, 13409 integer (13409 binary) Root relaxation: objective 0.000000e+00, 425 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 (684 simplex iterations) in 0.16 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:35 2012 Optimize a model with 9066 rows, 7674 columns and 33840 nonzeros Presolve removed 31 rows and 930 columns Presolve time: 0.06s Presolved: 9035 rows, 6744 columns, 32910 nonzeros Variable types: 0 continuous, 6744 integer (6744 binary) Root relaxation: objective 0.000000e+00, 416 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 (652 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:35 2012 Optimize a model with 4656 rows, 3984 columns and 16920 nonzeros Presolve removed 31 rows and 465 columns Presolve time: 0.02s Presolved: 4625 rows, 3519 columns, 16455 nonzeros Variable types: 0 continuous, 3519 integer (3519 binary) Root relaxation: objective 0.000000e+00, 433 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 (688 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 16:46:35 2012 Optimize a model with 2304 rows, 2016 columns and 7896 nonzeros Presolve removed 31 rows and 217 columns Presolve time: 0.01s Presolved: 2273 rows, 1799 columns, 7679 nonzeros Variable types: 0 continuous, 1799 integer (1799 binary) Root relaxation: objective 0.000000e+00, 436 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 (436 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 16:46:35 2012 Optimize a model with 1128 rows, 1032 columns and 3384 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 1097 rows, 939 columns, 3291 nonzeros Variable types: 0 continuous, 939 integer (939 binary) Root relaxation: objective 0.000000e+00, 420 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 (420 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 16:46:35 2012 Optimize a model with 540 rows, 540 columns and 1128 nonzeros Presolve removed 540 rows and 540 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 16:46:35 2012 Optimize a model with 834 rows, 786 columns and 2256 nonzeros Presolve removed 250 rows and 283 columns Presolve time: 0.00s Presolved: 584 rows, 503 columns, 1752 nonzeros Variable types: 0 continuous, 503 integer (503 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 0 211 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (796 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