tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.module TopModule (
input logic clk,
input logic rst,
input logic start_i,
input logic [3:0] count_i,
input logic [7:0] waddr_i,
input logic [31:0] wseed_i,
input logic susp_req_i,
input logic resume_i,
output logic busy_o,
output logic done_o,
output logic susp_active_o,
output logic susp_ack_o,
output logic [4:0] committed_o,
output logic [7:0] cur_addr_o,
output logic [31:0] cur_data_o
);
// FSM states
// IDLE : not busy, waiting for start
// RUN : a word window is open (timer counting the 3-cycle window)
// SUSP : suspended / parked, waiting for resume
// REARM : one zero cycle after resume before the parked word reopens
typedef enum logic [1:0] {IDLE, RUN, SUSP, REARM} state_t;
state_t state;
logic [1:0] timer; // cycles remaining in current window (2->1->0, close at 0)
logic [3:0] k; // current word index
logic [3:0] count_l; // latched count_i
logic [7:0] base_l; // latched waddr_i
logic [31:0] seed_l; // latched wseed_i
logic pending; // pending suspend request
logic [3:0] nk; // next word index
assign nk = k + 4'd1;
always_ff @(posedge clk) begin
if (rst) begin
state <= IDLE;
timer <= 2'd0;
k <= 4'd0;
count_l <= 4'd0;
base_l <= 8'd0;
seed_l <= 32'd0;
pending <= 1'b0;
busy_o <= 1'b0;
done_o <= 1'b0;
susp_active_o <= 1'b0;
susp_ack_o <= 1'b0;
committed_o <= 5'd0;
cur_addr_o <= 8'd0;
cur_data_o <= 32'd0;
end else begin
// pulse outputs default low
done_o <= 1'b0;
susp_ack_o <= 1'b0;
case (state)
// ---------------------------------------------------------
IDLE: begin
// idle suspend/resume are ignored
if (start_i) begin
count_l <= count_i;
base_l <= waddr_i;
seed_l <= wseed_i;
k <= 4'd0;
// open word 0 on the start edge
cur_addr_o <= waddr_i;
cur_data_o <= wseed_i ^ 32'd1; // seed ^ (0+1)
timer <= 2'd2;
busy_o <= 1'b1;
committed_o <= 5'd0;
pending <= 1'b0;
state <= RUN;
end
end
// ---------------------------------------------------------
RUN: begin
if (timer != 2'd0) begin
// window still open
timer <= timer - 2'd1;
if (susp_req_i)
pending <= 1'b1; // sample suspend request
end else begin
// closing edge: commit this word
committed_o <= committed_o + 5'd1;
if (k == count_l) begin
// final close: finish, discard any pending suspend
done_o <= 1'b1;
busy_o <= 1'b0;
cur_addr_o <= 8'd0;
cur_data_o <= 32'd0;
pending <= 1'b0;
state <= IDLE;
end else if (pending | susp_req_i) begin
// non-final close with suspend pending/requested: park
susp_active_o <= 1'b1;
susp_ack_o <= 1'b1;
cur_addr_o <= 8'd0;
cur_data_o <= 32'd0;
k <= nk; // park the next word
pending <= 1'b0;
state <= SUSP;
end else begin
// non-final close: open next word on this same edge
k <= nk;
cur_addr_o <= base_l + {4'd0, nk};
cur_data_o <= seed_l ^ ({28'd0, nk} + 32'd1);
timer <= 2'd2;
state <= RUN;
end
end
end
// ---------------------------------------------------------
SUSP: begin
// while suspended, ignore start_i and susp_req_i
if (resume_i) begin
susp_active_o <= 1'b0;
pending <= 1'b0;
state <= REARM; // one zero cycle before reopen
end
end
// ---------------------------------------------------------
REARM: begin
// parked word opens here with a full three-cycle window
cur_addr_o <= base_l + {4'd0, k};
cur_data_o <= seed_l ^ ({28'd0, k} + 32'd1);
timer <= 2'd2;
state <= RUN;
end
endcase
end
end
endmodule
No file changes, the agent left the workspace untouched.
TEST dut_present: PASS (/app/dut.sv exists) TEST dut_forbidden: PASS (no forbidden constructs) TEST harness_prepare: PASS (harness names nonce-renamed) TEST dut_compiles: PASS (compiled with held-back reference/testbench) TEST simulation_completed: PASS (Mismatches: 0 in 3710 samples) TEST reference_equivalence: PASS (all 3710 samples matched reference)
Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_dc8f69bbdaff44da. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.
Trial trial_dc8f69bbdaff44da · verifier authoritative; classifier explanatory.