
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:32:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3154.44.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/grafo3154.44.lp
Reading time = 0.25 seconds
: 135416 rows, 2472 columns, 408295 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 135416 rows, 2472 columns and 408295 nonzeros
Model fingerprint: 0x36908ca9
Variable types: 48 continuous, 2424 integer (2424 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]
Presolve removed 40689 rows and 27 columns
Presolve time: 1.31s
Presolved: 94727 rows, 2445 columns, 286641 nonzeros
Variable types: 0 continuous, 2445 integer (2397 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2445 rows, 97172 columns, 289086 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16626    4.4654796e+01   0.000000e+00   7.026266e+04      5s
   35632    4.4630563e+01   0.000000e+00   1.658543e+03     10s
   46655    4.5000000e+01   0.000000e+00   0.000000e+00     13s
   46655    4.5000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.500000e+01, 46655 iterations, 11.66 seconds (7.40 work units)
Total elapsed time = 30.09s (DegenMoves)
Total elapsed time = 37.38s (DegenMoves)

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

     0     0   45.00000    0  763    6.00000   45.00000   650%     -   50s

Explored 1 nodes (70912 simplex iterations) in 50.04 seconds (53.55 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.500000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo3154.44.sol'

