
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:07:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6991.44.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo6991.44.lp
Reading time = 0.25 seconds
: 154866 rows, 2869 columns, 467196 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 154866 rows, 2869 columns and 467196 nonzeros
Model fingerprint: 0x8ed4dab4
Variable types: 54 continuous, 2815 integer (2815 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 46137 rows and 24 columns
Presolve time: 1.08s
Presolved: 108729 rows, 2845 columns, 329448 nonzeros
Variable types: 0 continuous, 2845 integer (2791 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2833 rows, 111562 columns, 332293 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18027    6.5505708e+01   0.000000e+00   3.916953e+05      5s
   36457    5.9662168e+01   0.000000e+00   2.444472e+05     10s
   53778    5.9626333e+01   0.000000e+00   2.429800e+04     15s
   72031    5.9611588e+01   0.000000e+00   3.550408e+03     20s
   90751    5.9606576e+01   0.000000e+00   5.082942e+03     25s
  101394    6.0000000e+01   0.000000e+00   0.000000e+00     28s
  101394    6.0000000e+01   0.000000e+00   0.000000e+00     28s
  101394    6.0000000e+01   0.000000e+00   0.000000e+00     28s

Root relaxation: objective 6.000000e+01, 101394 iterations, 26.87 seconds (21.09 work units)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   60.00000    0 1744   11.00000   60.00000   445%     -   50s

Explored 1 nodes (113231 simplex iterations) in 50.05 seconds (43.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 2 

Time limit reached
Best objective 1.100000000000e+01, best bound 6.000000000000e+01, gap 445.4545%

Wrote result file './lp_solutions/grafo6991.44.sol'

