Merge pull request #9872 from ethereum/smt_remove_tests

Extract boost smt and remove unused tests

test/libsolidity/smtCheckerTests/imports/import_base.sol

@@ -0,0 +1,25 @@
+==== Source: base ====
+contract Base {
+	uint x;
+	address a;
+	function f() internal returns (uint) {
+		a = address(this);
+		++x;
+		return 2;
+	}
+}
+==== Source: der ====
+pragma experimental SMTChecker;
+import "base";
+contract Der is Base {
+	function g(uint y) public {
+		x += f();
+		assert(y > x);
+	}
+}
+// ----
+// Warning 1218: (der:101-109): Error trying to invoke SMT solver.
+// Warning 6328: (der:113-126): Assertion violation happens here.
+// Warning 2661: (base:100-103): Overflow (resulting value larger than 2**256 - 1) happens here.
+// Warning 2661: (der:101-109): Overflow (resulting value larger than 2**256 - 1) happens here.
+// Warning 2661: (base:100-103): Overflow (resulting value larger than 2**256 - 1) happens here.

test/libsolidity/smtCheckerTests/imports/import_library.sol

@@ -0,0 +1,19 @@
+==== Source: c ====
+pragma experimental SMTChecker;
+import "lib";
+contract C {
+	function g(uint x) public pure {
+		uint y = L.f();
+		assert(x > y);
+	}
+}
+==== Source: lib ====
+library L {
+	uint constant one = 1;
+	function f() internal pure returns (uint) {
+		return one;
+	}
+}
+// ----
+// Warning 6328: (c:113-126): Assertion violation happens here.
+// Warning 8364: (c:104-105): Assertion checker does not yet implement type type(library L)