
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:13:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3683.41.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/grafo3683.41.lp
Reading time = 0.58 seconds
: 302470 rows, 2967 columns, 910396 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 302470 rows, 2967 columns and 910396 nonzeros
Model fingerprint: 0xc460336e
Variable types: 57 continuous, 2910 integer (2910 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, 6e+01]
Found heuristic solution: objective 3.0000000
Presolve removed 120662 rows and 28 columns
Presolve time: 3.06s
Presolved: 181808 rows, 2939 columns, 548886 nonzeros
Variable types: 0 continuous, 2939 integer (2882 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2939 rows, 184747 columns, 551825 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4304    2.2304024e+02   0.000000e+00   3.418440e+06      5s
   25943    9.2497830e+01   0.000000e+00   3.610620e+05     11s
   39822    7.0951596e+01   0.000000e+00   1.544391e+05     15s
   52761    6.7860119e+01   0.000000e+00   1.762723e+05     20s
   66071    6.5807141e+01   0.000000e+00   1.125234e+05     25s
   79289    6.5781298e+01   0.000000e+00   2.300549e+04     30s
   91721    6.5769401e+01   0.000000e+00   7.534453e+04     35s
  104930    6.5762292e+01   0.000000e+00   1.153339e+04     40s
  118139    6.5758950e+01   0.000000e+00   5.986320e+03     45s

Root relaxation: time limit, 130433 iterations, 46.55 seconds (27.73 work units)

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

     0     0          -    0         8.00000  351.00000  4288%     -   50s

Explored 1 nodes (130433 simplex iterations) in 50.04 seconds (30.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 3 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.510000000000e+02, gap 4287.5000%

Wrote result file './lp_solutions/grafo3683.41.sol'

