Merge branch '3896-fix-issue-reading-solution-files' into 'master'

Resolve "Issue reading solution files"

Closes #3896

See merge request integer/scip!3807

Author: DominikKamp

src/scip/scip_sol.c

@@ -3263,16 +3263,16 @@ SCIP_RETCODE readSolFile(
       lineno++;
 
       /* there are some lines which may precede the solution information */
-      if( SCIPstrncasecmp(buffer, "solution status:", 16) == 0 || SCIPstrncasecmp(buffer, "objective value:", 16) == 0 ||
-         SCIPstrncasecmp(buffer, "Log started", 11) == 0 || SCIPstrncasecmp(buffer, "Variable Name", 13) == 0 ||
-         SCIPstrncasecmp(buffer, "All other variables", 19) == 0 || strspn(buffer, " \n\r\t\f") == strlen(buffer) ||
-         SCIPstrncasecmp(buffer, "NAME", 4) == 0 || SCIPstrncasecmp(buffer, "ENDATA", 6) == 0 ||    /* allow parsing of SOL-format on the MIPLIB 2003 pages */
-         SCIPstrncasecmp(buffer, "=obj=", 5) == 0 )    /* avoid "unknown variable" warning when reading MIPLIB SOL files */
+      if( SCIPstrncasecmp(buffer, "solution status:", 16) == 0 || SCIPstrncasecmp(buffer, "objective value:", 16) == 0
+         || buffer[strspn(buffer, " \t\n\v\f\r")] == '\0' || SCIPstrncasecmp(buffer, "Log started", 11) == 0
+         || SCIPstrncasecmp(buffer, "Variable Name", 13) == 0 || SCIPstrncasecmp(buffer, "All other variables", 19) == 0
+         || SCIPstrncasecmp(buffer, "NAME", 4) == 0 || SCIPstrncasecmp(buffer, "ENDATA", 6) == 0 /* allow parsing of SOL-format on the MIPLIB 2003 pages */
+         || SCIPstrncasecmp(buffer, "=obj=", 5) == 0 ) /* avoid "unknown variable" warning when reading MIPLIB SOL files */
          continue;
 
       /* tokenize the line */
-      varname = SCIPstrtok(buffer, " \t", &endptr);
-      valuestring = SCIPstrtok(NULL, " \t", &endptr);
+      varname = SCIPstrtok(buffer, " \t\v", &endptr);
+      valuestring = SCIPstrtok(NULL, " \t\n\v\f\r", &endptr);
       if( valuestring == NULL )
       {
          SCIPerrorMessage("Invalid input line %d in solution file <%s>: <%s>.\n", lineno, filename, buffer);