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Replace the 'primes' test in junit_timeout_error.sby with a new test that solves a**3 + b**3 == c**3.

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The old test tried to find two primes that are 7 apart. It is supposed to time
out after 1 second but on newer hardware the test completes too quickly. This
commit replaces it with a new test that tries to find a non-trivial solution to
the diophantine equation a**3 + b**3 == c**3, which is a lot more difficult.
This commit is contained in:
Emily Schmidt 2024-04-02 11:28:54 +01:00
parent e30a0fe611
commit 725038d315
1 changed files with 14 additions and 15 deletions
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29
tests/junit/junit_timeout_error.sby
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@ -17,26 +17,25 @@ solver: smtbmc foo
[script]
read -noverific
syntax: read -define SYNTAX_ERROR
read -sv primes.sv
prep -top primes
read -sv diophantine.sv
prep -top diophantine
[file primes.sv]
module primes;
parameter [8:0] offset = 7;
(* anyconst *) reg [8:0] prime1;
wire [9:0] prime2 = prime1 + offset;
(* allconst *) reg [4:0] factor;
[file diophantine.sv]
module diophantine;
(* anyconst *) reg [15:0] a, b, c;
`ifdef SYNTAX_ERROR
`ifdef SYNTAX_ERROR
foo
`endif
`endif
wire [48:0] x = a*a*a + b*b*b;
wire [48:0] y = c*c*c;
always @* begin
if (1 < factor && factor < prime1)
assume ((prime1 % factor) != 0);
if (1 < factor && factor < prime2)
assume ((prime2 % factor) != 0);
assume (1 < prime1);
assume (a > 0);
assume (b > 0);
assume (c > 0);
assume (x == y);
cover (1);
end
endmodule