tqchen opened a new issue #6029: URL: https://github.com/apache/incubator-tvm/issues/6029
http://ci.tvm.ai:8080/job/temp-ci-docker-staging/job/ci-stage2/12/execution/node/229/log/ ``` =================================== FAILURES =================================== __________________________ test_solution_consistency ___________________________ def test_solution_consistency(): seed = random.randrange(sys.maxsize) print("\nThis test is intentionally non-deterministic, " "if it fails please report it in github issue together with this seed {}\n".format(seed)) random.seed(seed) def _check(variables, formulas, coef=(-5, 5), bounds=(-20, 20)): vs = [te.var("x" + str(i)) for i in range(variables)] fs = [] for i in range(formulas): s1 = sum([v*random.randint(coef[0], coef[1]) for v in vs]) s1 += random.randint(coef[0], coef[1]) s2 = sum([v*random.randint(coef[0], coef[1]) for v in vs]) s2 += random.randint(coef[0], coef[1]) op = random.choice([tir.expr.EQ, tir.expr.LE, tir.expr.LT, tir.expr.GE, tir.expr.GT]) fs.append(op(s1, s2)) vranges = {v: tvm.ir.expr.Range(bounds[0], bounds[1] + 1) for v in vs} before = te.all(tir.const(1, 'bool'), *fs) after = arith._ffi_api.SolveInequalitiesAsCondition(vs, vranges, fs) after = te.all(tir.const(1, 'bool'), *after) testing.check_bool_expr_is_true(before == after, vranges) solution = arith.solve_linear_inequalities(fs, vs, vranges, deskew_range=True) testing.check_int_constraints_trans_consistency(solution) for i in range(3): _check(1, 1) for i in range(3): _check(1, 2) for i in range(3): _check(2, 1) for i in range(3): _check(2, 2) for i in range(3): _check(2, 3) # Somewhere here coefficients in the results become too large, leading to overflow, # so we use smaller initial coefficients for i in range(5): > _check(3, 3, coef=(-2, 2)) tests/python/unittest/test_arith_solve_linear_inequality.py:66: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ tests/python/unittest/test_arith_solve_linear_inequality.py:49: in _check testing.check_int_constraints_trans_consistency(solution) python/tvm/testing.py:285: in check_int_constraints_trans_consistency constraints_trans.dst_to_src, constraints_trans.src_to_dst) python/tvm/testing.py:280: in _check_forward cond=tvm.te.all(tvm.tir.const(1, 'bool'), *constraints1.relations)) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ bool_expr = (!((((-1 <= (((floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2)*2) + (x0.shifted*2)) + floordiv(((x2.shifted*8) ...d < 30))) && ((-6 <= x2.shifted) && (x2.shifted < 35))) && ((x0.shifted == x0.shifted) && (x2.shifted == x2.shifted)))) vranges = {x2.shifted: range(min=0, ext=15), x0.shifted: range(min=0, ext=20)} cond = ((((-1 <= (((floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2)*2) + (x0.shifted*2)) + floordiv(((x2.shifted*8) - ...hifted*8) - 111), 6)), 2) + x0.shifted) <= 19)) && ((floordiv(((x2.shifted*8) - 111), 6)*6) == ((x2.shifted*8) - 116))) def check_bool_expr_is_true(bool_expr, vranges, cond=None): """ Check that bool_expr holds given the condition cond for every value of free variables from vranges. for example, 2x > 4y solves to x > 2y given x in (0, 10) and y in (0, 10) here bool_expr is x > 2y, vranges is {x: (0, 10), y: (0, 10)}, cond is 2x > 4y We creates iterations to check, for x in range(10): for y in range(10): assert !(2x > 4y) || (x > 2y) Parameters ---------- bool_expr : tvm.ir.PrimExpr Boolean expression to check vranges: Dict[tvm.tir.expr.Var, tvm.ir.Range] Free variables and their ranges cond: tvm.ir.PrimExpr extra conditions needs to be satisfied. """ if cond is not None: bool_expr = tvm.te.any(tvm.tir.Not(cond), bool_expr) def _run_expr(expr, vranges): """ Evaluate expr for every value of free variables given by vranges and return the tensor of results. """ def _compute_body(*us): vmap = {v: u + r.min for (v, r), u in zip(vranges.items(), us)} return tvm.tir.stmt_functor.substitute(expr, vmap) A = tvm.te.compute([r.extent.value for v, r in vranges.items()], _compute_body) args = [tvm.nd.empty(A.shape, A.dtype)] sch = tvm.te.create_schedule(A.op) mod = tvm.build(sch, [A]) mod(*args) return args[0].asnumpy() res = _run_expr(bool_expr, vranges) if not np.all(res): indices = list(np.argwhere(res == 0)[0]) counterex = [(str(v), i + r.min) for (v, r), i in zip(vranges.items(), indices)] counterex = sorted(counterex, key=lambda x: x[0]) counterex = ", ".join([v + " = " + str(i) for v, i in counterex]) ana = tvm.arith.Analyzer() raise AssertionError("Expression {}\nis not true on {}\n" "Counterexample: {}" > .format(ana.simplify(bool_expr), vranges, counterex)) E AssertionError: Expression ((((((((floordiv((0 - floordiv(((x2.shifted: int32*8) - 111), 6)), 2)*2) + (x0.shifted: int32*2)) + floordiv(((x2.shifted*8) - 111), 6)) < -1) || (((86 - (floordiv(((x2.shifted*8) - 111), 6)*4)) - (x2.shifted*6)) < (((floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2)*2) + (x0.shifted*2)) + 2))) || (19 < (floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2) + x0.shifted))) || ((floordiv(((x2.shifted*8) - 111), 6)*6) != ((x2.shifted*8) - 116))) || ((((((((((x2.shifted*3) + (floordiv(((x2.shifted*8) - 111), 6)*2)) + floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2)) + x0.shifted) < 43) && ((((((x2.shifted*2) + floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2)) + x0.shifted) - (floordiv(((x2.shifted*8) - 111), 6)*2)) - 29) == ((((floordiv(((x2.shifted*8) - 111), 6) + floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2)) + x0.shifted) + 29) - (x2.shifted*2)))) && ((((floordiv(((x2.shifted*8) - 111), 6) - floordiv(floormod(((x2.shifted*8) - 111), -12), 6)) - (x0.shifted*2)) - 2) < floordiv(((x2.shifted*8) - 111), 6))) && ((-21 <= (floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2) + x0.shifted)) && ((floordiv((0 - floordiv(((x2.shifted*8) - 111), 6)), 2) + x0.shifted) < 20))) && ((-1 <= x2.shifted) && (x2.shifted < 30))) && ((-6 <= x2.shifted) && (x2.shifted < 35)))) E is not true on {x2.shifted: range(min=0, ext=15), x0.shifted: range(min=0, ext=20)} E Counterexample: x0.shifted: int32 = 0, x2.shifted: int32 = 1 python/tvm/testing.py:239: AssertionError ----------------------------- Captured stdout call ----------------------------- This test is intentionally non-deterministic, if it fails please report it in github issue together with this seed 1371579918580754520 ``` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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