
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:48:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7654.45.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/grafo7654.45.lp
Reading time = 0.20 seconds
: 129740 rows, 2888 columns, 391836 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 129740 rows, 2888 columns and 391836 nonzeros
Model fingerprint: 0xf9a819e0
Variable types: 55 continuous, 2833 integer (2833 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 1.0000000
Presolve removed 28380 rows and 1 columns
Presolve time: 0.74s
Presolved: 101360 rows, 2887 columns, 307160 nonzeros
Variable types: 0 continuous, 2887 integer (2832 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2851 rows, 104211 columns, 310047 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20875    5.9978366e+01   0.000000e+00   2.566124e+05      5s
   39883    5.9958603e+01   0.000000e+00   1.715228e+04     10s
   57611    5.9951031e+01   0.000000e+00   5.675618e+03     15s
   75323    5.9948058e+01   0.000000e+00   9.855288e+02     20s
   92243    6.0000000e+01   0.000000e+00   0.000000e+00     25s
   92243    6.0000000e+01   0.000000e+00   0.000000e+00     25s
   92243    6.0000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 6.000000e+01, 92243 iterations, 23.92 seconds (19.99 work units)
Total elapsed time = 25.14s (DegenMoves)

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

     0     0   60.00000    0 1789    7.00000   60.00000   757%     -   50s

Explored 1 nodes (105316 simplex iterations) in 50.04 seconds (45.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.000000000000e+01, gap 757.1429%

Wrote result file './lp_solutions/grafo7654.45.sol'

