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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-stair.opb
MD5SUM07f65f29ee2937de43752221c6dbdf88
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 20
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 1048575
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 516561567744
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 3615347139525
Number of bits of the biggest sum of numbers42
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.349946
Number of variables7646
Total number of constraints362
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints362
Minimum length of a constraint10
Maximum length of a constraint540

Trace number 42751 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-06-16 14:21:43 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25969 boxname=wulflinc1 idbench=1269 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  07f65f29ee2937de43752221c6dbdf88  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-stair.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-stair.opb
IDLAUNCH: 25969
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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	: 2
cpu MHz		: 451.053
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        715024 kB
Buffers:         19248 kB
Cached:         275940 kB
SwapCached:       1156 kB
Active:          26772 kB
Inactive:       270672 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        714772 kB
SwapTotal:     2097136 kB
SwapFree:      2094896 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5364 kB
Slab:            16364 kB
Committed_AS:    92684 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 14:23:43 (client local time) WITH STATUS 1 IN 119.593 SECONDS
stats: 25969 7 119.593 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 2/55 21241
Raw data (stat): 21241 (runsolver) R 21240 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 914587234 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.001 s]
Raw data (loadavg): 0.93 0.95 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 28452 0 0 0 944 55 0 0 25 0 1 0 914587234 87814144 17327 4294967295 134512640 135730672 3221224576 3221125696 134786278 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21439 17327 301 301 0 21138 0
vsize: 85756
[startup+20.0018 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 55853 0 0 0 1890 109 0 0 25 0 1 0 914587234 172556288 33525 4294967295 134512640 135730672 3221224576 3221129544 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42128 33525 301 301 0 41827 0
vsize: 168512
[startup+30.0016 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 95822 0 0 0 2816 183 0 0 25 0 1 0 914587234 298496000 51317 4294967295 134512640 135730672 3221224576 3221129920 134770721 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72875 51317 301 301 0 72574 0
vsize: 291500
[startup+40.0014 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 109487 0 0 0 3792 208 0 0 25 0 1 0 914587234 340606976 64771 4294967295 134512640 135730672 3221224576 3221126296 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 83156 64771 301 301 0 82855 0
vsize: 332624
[startup+50.0012 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 128663 0 0 0 4758 242 0 0 25 0 1 0 914587234 368623616 83724 4294967295 134512640 135730672 3221224576 3221133800 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 89996 83724 301 301 0 89695 0
vsize: 359984
[startup+60.002 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 186913 0 0 0 5652 348 0 0 25 0 1 0 914587234 696455168 122426 4294967295 134512640 135730672 3221224576 3221131904 134788521 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 170033 122430 301 301 0 169732 0
vsize: 680132
[startup+70.0028 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 200005 0 0 0 6622 378 0 0 25 0 1 0 914587234 629342208 110761 4294967295 134512640 135730672 3221224576 3221130008 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 153648 110761 301 301 0 153347 0
vsize: 614592
[startup+80.003 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 214392 0 0 0 7595 405 0 0 25 0 1 0 914587234 639217664 124931 4294967295 134512640 135730672 3221224576 3221127688 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 156059 124931 301 301 0 155758 0
vsize: 624236
[startup+90.0033 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 232708 0 0 0 8559 441 0 0 25 0 1 0 914587234 666066944 143034 4294967295 134512640 135730672 3221224576 3221134428 135109339 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 162614 143034 301 301 0 162313 0
vsize: 650456
[startup+100.003 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 247190 0 0 0 9534 466 0 0 25 0 1 0 914587234 737484800 157348 4294967295 134512640 135730672 3221224576 3221128152 134787727 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 180050 157349 301 301 0 179749 0
vsize: 720200
[startup+110.004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 263733 0 0 0 10507 494 0 0 25 0 1 0 914587234 762355712 173699 4294967295 134512640 135730672 3221224576 3221222672 134607961 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 186122 173699 301 301 0 185821 0
vsize: 744488
[startup+119.587 s]
Raw data (loadavg): 0.99 0.97 0.91 1/54 21241
Raw data (stat): 21241 (pb2sat-v2) R 21240 8378 8377 0 -1 0 263733 0 0 0 10507 494 0 0 25 0 1 0 914587234 762355712 173699 4294967295 134512640 135730672 3221224576 3221222672 134607961 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 186122 173699 301 301 0 185821 0
vsize: 0

Child status: 1
Real time (s): 119.587
CPU time (s): 119.593
CPU user time (s): 114.296
CPU system time (s): 5.29719
CPU usage (%): 100.005
Max. virtual memory (Kb): 744488
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####