Merge pull request #1211 from diffblue/cycle_delay_star2

KNOWNBUG test for `##[*]`

Author: tautschnig

regression/verilog/SVA/cycle_delay_star2.desc

@@ -0,0 +1,10 @@
+KNOWNBUG
+cycle_delay_star2.sv
+--bound 10
+^\[main.p0\] ##\[\*\] main\.x == 4: REFUTED$
+^EXIT=10$
+^SIGNAL=0$
+--
+^warning: ignoring
+--
+The BMC engine gives the wrong answer.

regression/verilog/SVA/cycle_delay_star2.sv

@@ -0,0 +1,14 @@
+module main(input clk);
+
+  reg [2:0] x;
+
+  initial x=0;
+
+  // 0, 1, 2, 3, 3, ...
+  always @(posedge clk)
+    if(x<=3) x++;
+
+  // fails -- 4 is never reached
+  initial p0: assert property (##[*] x==4);
+
+endmodule