
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:09:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7403.43.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/grafo7403.43.lp
Reading time = 0.22 seconds
: 140622 rows, 2580 columns, 424072 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 140622 rows, 2580 columns and 424072 nonzeros
Model fingerprint: 0x5ded9904
Variable types: 50 continuous, 2530 integer (2530 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 43971 rows and 18 columns
Presolve time: 0.94s
Presolved: 96651 rows, 2562 columns, 292573 nonzeros
Variable types: 0 continuous, 2562 integer (2512 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2562 rows, 99213 columns, 295135 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21119    6.4959983e+01   0.000000e+00   1.630106e+05      5s
   42012    6.3936978e+01   0.000000e+00   4.352705e+04     10s
   63383    6.3929117e+01   0.000000e+00   2.041686e+04     15s
   85146    6.3926288e+01   0.000000e+00   1.191168e+02     20s
   92878    6.4000000e+01   0.000000e+00   0.000000e+00     22s
   92878    6.4000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 6.400000e+01, 92878 iterations, 20.93 seconds (18.39 work units)
Total elapsed time = 45.27s (DegenMoves)

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

     0     0   64.00000    0  768    9.00000   64.00000   611%     -   50s

Explored 1 nodes (111778 simplex iterations) in 50.03 seconds (51.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.400000000000e+01, gap 611.1111%

Wrote result file './lp_solutions/grafo7403.43.sol'

