Update

autoload/smt2/solver.vim

@@ -0,0 +1,56 @@
+if polyglot#init#is_disabled(expand('<sfile>:p'), 'smt2', 'autoload/smt2/solver.vim')
+  finish
+endif
+
+" ------------------------------------------------------------------------------
+" Config
+" ------------------------------------------------------------------------------
+" If no command for invoking a solver is specified in ~/.vimrc, test if either
+" 'z3' or 'boolector' is accessible through $PATH (in that order)
+if !exists("g:smt2_solver_command")
+    if executable("z3")
+        let g:smt2_solver_command = "z3"
+    elseif executable("boolector")
+        let g:smt2_solver_command = "boolector"
+    endif
+endif
+
+" If no command line switch for printing the solver's version is specified in
+" ~/.vimrc, use '--version'
+if !exists("g:smt2_solver_version_switch")
+    let g:smt2_solver_version_switch = "--version"
+endif
+
+" ------------------------------------------------------------------------------
+" Public functions
+" ------------------------------------------------------------------------------
+" Invokes the solver on current file
+function! smt2#solver#Run()
+    silent !clear
+    execute "!" . g:smt2_solver_command . " " . bufname("%")
+endfunction
+
+" Puts the solver's output in new split (replaces old split)
+function! smt2#solver#RunAndShowResult()
+    let output = system(g:smt2_solver_command . " " . bufname("%") . " 2>&1")
+
+    " Create split (or reuse existent)
+    if exists("s:outputbufnr") && bufwinnr(s:outputbufnr) > 0
+        execute bufwinnr(s:outputbufnr) . 'wincmd w'
+    else
+        silent! vnew
+        let s:outputbufnr=bufnr('%')
+    endif
+
+    " Clear & (re-)fill contents
+    silent! normal! ggdG
+    setlocal filetype=smt2 buftype=nofile nobuflisted noswapfile
+    call append(0, split(output, '\v\n'))
+    normal! gg
+endfunction
+
+" Requests the solver's version
+function! smt2#solver#PrintVersion()
+    silent !clear
+    execute "!" . g:smt2_solver_command . " " . g:smt2_solver_version_switch
+endfunction