
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:34:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3942.40.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/grafo3942.40.lp
Reading time = 0.25 seconds
: 126458 rows, 2149 columns, 381152 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 126458 rows, 2149 columns and 381152 nonzeros
Model fingerprint: 0x39625821
Variable types: 45 continuous, 2104 integer (2104 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 43098 rows and 21 columns
Presolve time: 1.05s
Presolved: 83360 rows, 2128 columns, 252183 nonzeros
Variable types: 0 continuous, 2128 integer (2083 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2128 rows, 85488 columns, 254311 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16872    4.5880204e+01   0.000000e+00   4.165360e+04      5s
   38508    4.5825399e+01   0.000000e+00   3.476258e+02     10s
   42967    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   42967    4.6000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.600000e+01, 42967 iterations, 9.84 seconds (5.75 work units)
Total elapsed time = 21.16s (DegenMoves)
Total elapsed time = 37.82s (DegenMoves)
Total elapsed time = 42.64s (DegenMoves)

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

     0     0   46.00000    0  466    7.00000   46.00000   557%     -   44s
     0     0          -    0         7.00000   46.00000   557%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 36
  Clique: 18
  MIR: 157
  StrongCG: 1
  GUB cover: 6
  Zero half: 30
  RLT: 58

Explored 1 nodes (70052 simplex iterations) in 50.02 seconds (48.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.600000000000e+01, gap 557.1429%

Wrote result file './lp_solutions/grafo3942.40.sol'

