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，这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
有什么意见我为什么会收到以下错误？
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
1 回答
您需要重命名问题文件，因此SCIP知道它是哪种格式：
sample.lp在您的情况下 .