
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:32:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7701.43.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/grafo7701.43.lp
Reading time = 0.36 seconds
: 227922 rows, 3184 columns, 686889 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 227922 rows, 3184 columns and 686889 nonzeros
Model fingerprint: 0x6cd4459d
Variable types: 59 continuous, 3125 integer (3125 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 -0.0000000
Presolve removed 77688 rows and 24 columns
Presolve time: 1.50s
Presolved: 150234 rows, 3160 columns, 454441 nonzeros
Variable types: 0 continuous, 3160 integer (3101 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3145 rows, 153379 columns, 457601 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15150    1.3328002e+02   0.000000e+00   6.761219e+06      6s
   31573    9.0395837e+01   0.000000e+00   1.086727e+05     11s
   46084    8.6555827e+01   0.000000e+00   9.752089e+04     15s
   62300    7.1780417e+01   0.000000e+00   2.052537e+05     20s
   77880    7.0758069e+01   0.000000e+00   1.969065e+04     25s
   93067    7.0744595e+01   0.000000e+00   6.727806e+04     30s
  109235    7.0734526e+01   0.000000e+00   9.616319e+04     35s
  124688    7.0727646e+01   0.000000e+00   7.889991e+04     40s
  141374    7.0722350e+01   0.000000e+00   4.936090e+03     45s

Root relaxation: time limit, 157622 iterations, 48.28 seconds (38.47 work units)

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

     0     0          -    0         9.00000  360.00000  3900%     -   50s

Explored 1 nodes (157622 simplex iterations) in 50.02 seconds (40.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.600000000000e+02, gap 3900.0000%

Wrote result file './lp_solutions/grafo7701.43.sol'

