From a26018747816beb119041c3fc912f76f6168b26b Mon Sep 17 00:00:00 2001
From: Artur Meski <artur.meski@gmail.com>
Date: Sun, 22 Sep 2019 16:35:00 +0100
Subject: [PATCH] Chain reaction example

---
 smt_examples/chain_reaction.py | 94 ++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 smt_examples/chain_reaction.py

diff --git a/smt_examples/chain_reaction.py b/smt_examples/chain_reaction.py
new file mode 100644
index 0000000..14a8de5
--- /dev/null
+++ b/smt_examples/chain_reaction.py
@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+
+from rs import *
+from smt import *
+import sys
+import resource
+
+def chain_reaction(print_system=False):
+    
+    if len(sys.argv) < 1+3:
+        print("provide N M B")
+        print(" B=1 - RSC")
+        print(" B=0 - RSC translated into RS")
+        exit(1)
+
+    chainLen=int(sys.argv[1]) # chain length
+    maxConc=int(sys.argv[2]) # depth (max concentration)
+
+    verify_rsc=bool(int(sys.argv[3]))
+        
+    if chainLen < 1 or maxConc < 1:
+        print("be reasonable")
+        exit(1)
+    
+    r = ReactionSystemWithConcentrations()
+    r.add_bg_set_entity(("inc",1))
+    r.add_bg_set_entity(("dec",1))
+    
+    for i in range(1,chainLen+1):
+        r.add_bg_set_entity(("e_" + str(i),maxConc))
+    
+    for i in range(1,chainLen+1):
+        ent = "e_" + str(i)
+        r.add_reaction_inc(ent, "inc", [(ent, 1)],[(ent,maxConc)])
+        r.add_reaction_dec(ent, "dec", [(ent, 1)],[])
+        if i < chainLen:
+            r.add_reaction([(ent,maxConc)],[],[("e_"+str(i+1),1)])
+
+    r.add_reaction([("e_" + str(chainLen),maxConc)],[("dec",1)],[("e_" + str(chainLen),maxConc)])
+    
+    c = ContextAutomatonWithConcentrations(r)
+    c.add_init_state("init")
+    c.add_state("working")
+    c.add_transition("init", [("e_1",1),("inc",1)], "working")
+    c.add_transition("working", [("inc",1)], "working")
+
+    rc = ReactionSystemWithAutomaton(r,c)
+    
+    if print_system:
+        rc.show()
+    
+    if verify_rsc:
+        smt_rsc = SmtCheckerRSC(rc)
+        prop = [('e_'+str(chainLen),maxConc)]
+        smt_rsc.check_reachability((prop,[]),max_level=maxConc*chainLen+10)
+
+    else:
+        orc = rc.get_ordinary_reaction_system_with_automaton()
+        if print_system:
+            print("\nTranslated:")
+            orc.show()
+        smt_tr_rs = SmtCheckerRS(orc)
+        smt_tr_rs.check_reachability(['e_'+str(chainLen)+"#"+str(maxConc)])
+    
+    time=0
+    mem_usage=resource.getrusage(resource.RUSAGE_SELF).ru_maxrss/(1024*1024)
+    if verify_rsc:
+        filename_t="bench_rsc_time.log"
+        filename_m="bench_rsc_mem.log"
+        time=smt_rsc.get_verification_time()
+    else:
+        filename_t="bench_tr_rs_time.log"
+        filename_m="bench_tr_rs_mem.log"
+        time=smt_tr_rs.get_verification_time()
+
+    f=open(filename_t, 'a')    
+    log_str="(" + str(chainLen) + "," + str(maxConc) + "," + str(time) + ")\n"
+    f.write(log_str)
+    f.close()
+    
+    f=open(filename_m, 'a')
+    log_str="(" + str(chainLen) + "," + str(maxConc) + "," + str(mem_usage) + ")\n"
+    f.write(log_str)
+    f.close()
+
+
+def main():
+
+    chain_reaction()
+
+if __name__ == "__main__":
+    main()
+        
+# EOF