Question

我有一个需要用SCIP解决的输入问题：

Maximize
 obj: x1 + 2 x2 + 3 x3 + x4
Subject To
 c1: - x1 + x2 + x3 + 10 x4 <= 20
 c2: x1 - 3 x2 + x3 <= 30
 c3: x2 - 3.5 x4 = 0
Bounds
 0 <= x1 <= 40
 2 <= x4 <= 3
General
 x4
End

我从scip网站下载了预编译的二进制文件，以下是我尝试运行的方式：

./scip-3.2.1.darwin.x86_64.gnu.opt.spx -f sample.txt  -s danielSettings.set

任何意见为什么我收到以下错误？

danielk-2:~ danielk$ ./scip-3.2.1.darwin.x86_64.gnu.opt.spx -f sample.txt  -s danielSettings.set 
SCIP version 3.2.1 [precision: 8 byte] [memory: block] [mode: optimized] [LP solver: SoPlex 2.2.1] [GitHash: c7c6c02]
Copyright (c) 2002-2016 Konrad-Zuse-Zentrum fuer Informationstechnik Berlin (ZIB)

External codes: 
  SoPlex 2.2.1         Linear Programming Solver developed at Zuse Institute Berlin (soplex.zib.de) [GitHash: 267a44a]
  cppad-20140000.3     Algorithmic Differentiation of C++ algorithms developed by B. Bell (www.coin-or.org/CppAD)
  ZLIB 1.2.5           General purpose compression library by J. Gailly and M. Adler (zlib.net)
  GMP 6.0.0            GNU Multiple Precision Arithmetic Library developed by T. Granlund (gmplib.org)
  ZIMPL 3.3.3          Zuse Institute Mathematical Programming Language developed by T. Koch (zimpl.zib.de)
  Ipopt 3.12.4         Interior Point Optimizer developed by A. Waechter et.al. (www.coin-or.org/Ipopt)

reading user parameter file <danielSettings.set>

read problem <sample.txt>
============

no reader for input file <sample.txt> available

Answer 1

您需要重命名问题文件，以便SCIP知道它的格式：sample.lp。

SCIP：没有输入文件<sample.txt>的读者可用

1 个答案: