Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided in four parts:
  1. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provide some useful information on the computer.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
  3. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to 1200 seconds. After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  4. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.

General information on the benchmark

Namenormalized-opb/mps-v2-20-10/plato.asu.edu/pub/unibo/normalized-mps-v2-20-10-nsrand_ipx.opb
MD5SUM1b24e93bee48f2c98e7d4820cbb13e8e
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2147483485
Optimality of the best value was proved NO
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 26715880447
Number of bits of the biggest sum of numbers35
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1225.16
Number of variables6651
Total number of constraints7355
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)6951
Number of constraints which are nor clauses,nor cardinality constraints404
Minimum length of a constraint1
Maximum length of a constraint6651

Trace number 35388 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc26 THE 2005-05-28 13:03:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24695 boxname=wulflinc26 idbench=1167 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  1b24e93bee48f2c98e7d4820cbb13e8e  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-nsrand_ipx.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-nsrand_ipx.opb
IDLAUNCH: 24695
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        700316 kB
Buffers:         33164 kB
Cached:         269440 kB
SwapCached:        744 kB
Active:          29360 kB
Inactive:       275360 kB
HighTotal:      131008 kB
HighFree:         8652 kB
LowTotal:       903652 kB
LowFree:        691664 kB
SwapTotal:     2097892 kB
SwapFree:      2096256 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5088 kB
Slab:            23944 kB
Committed_AS:    63732 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 13:05:38 (client local time) WITH STATUS 1 IN 108.22 SECONDS
stats: 24695 7 108.22 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.92 0.95 0.91 2/54 2224
Raw data (stat): 2224 (runsolver) R 2223 20687 20686 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 865023078 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0012 s]
Raw data (loadavg): 0.93 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 26065 0 0 0 939 59 0 0 25 0 1 0 865023078 78700544 14968 4294967295 134512640 135726644 3221224576 3221064000 134558027 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 19214 14968 300 300 0 18914 0
vsize: 76856
[startup+20.002 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 55310 0 0 0 1882 117 0 0 25 0 1 0 865023078 175075328 32985 4294967295 134512640 135726644 3221224576 3220538628 135277543 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 42743 32985 300 300 0 42443 0
vsize: 170972
[startup+30.0027 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 96118 0 0 0 2801 197 0 0 25 0 1 0 865023078 299515904 51589 4294967295 134512640 135726644 3221224576 3219022296 134784091 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 73124 51589 300 300 0 72824 0
vsize: 292496
[startup+40.0024 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 113392 0 0 0 3765 234 0 0 25 0 1 0 865023078 349425664 68626 4294967295 134512640 135726644 3221224576 3219859792 134739613 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 85309 68626 300 300 0 85009 0
vsize: 341236
[startup+50.0031 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 147862 0 0 0 4699 300 0 0 25 0 1 0 865023078 543805440 102331 4294967295 134512640 135726644 3221224576 3218990304 134771925 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 132765 102333 300 300 0 132465 0
vsize: 531060
[startup+60.0028 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 194553 0 0 0 5600 399 0 0 25 0 1 0 865023078 597495808 105408 4294967295 134512640 135726644 3221224576 3219105148 134634289 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 145873 105408 300 300 0 145573 0
vsize: 583492
[startup+70.0085 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 207041 0 0 0 6572 428 0 0 25 0 1 0 865023078 631050240 117670 4294967295 134512640 135726644 3221224576 3220426208 134767076 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 154065 117670 300 300 0 153765 0
vsize: 616260
[startup+80.0121 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 228510 0 0 0 7524 476 0 0 25 0 1 0 865023078 662409216 138882 4294967295 134512640 135726644 3221224576 3220777024 134782642 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 161721 138883 300 300 0 161421 0
vsize: 646884
[startup+90.0119 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 248768 0 0 0 8484 517 0 0 25 0 1 0 865023078 741937152 158905 4294967295 134512640 135726644 3221224576 3218892944 134780354 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 181137 158905 300 300 0 180837 0
vsize: 724548
[startup+100.012 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 263582 0 0 0 9453 547 0 0 25 0 1 0 865023078 764882944 173523 4294967295 134512640 135726644 3221224576 3221222740 134541622 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 186739 173523 300 300 0 186439 0
vsize: 746956
[startup+108.22 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 2224
Raw data (stat): 2224 (pb2sat) R 2223 20687 20686 0 -1 0 263582 0 0 0 9453 547 0 0 25 0 1 0 865023078 764882944 173523 4294967295 134512640 135726644 3221224576 3221222740 134541622 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 186739 173523 300 300 0 186439 0
vsize: 0

Child status: 1
Real time (s): 108.22
CPU time (s): 108.22
CPU user time (s): 102.403
CPU system time (s): 5.81612
CPU usage (%): 99.9999
Max. virtual memory (Kb): 746956
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####