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-ganges.opb
MD5SUMb4dd389fad7651d074fd2478f6d16d07
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 1982
Biggest coefficient in the objective function 4194304
Number of bits for the biggest coefficient in the objective function 23
Sum of the numbers in the objective function 110624659
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 5242880000
Number of bits of the biggest number in a constraint 33
Biggest sum of numbers in a constraint 36543210700
Number of bits of the biggest sum of numbers36
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.138978
Number of variables32066
Total number of constraints1706
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 constraints1706
Minimum length of a constraint10
Maximum length of a constraint1219

Trace number 35433 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-05-28 13:12:46 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24747 boxname=wulflinc1 idbench=1219 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  b4dd389fad7651d074fd2478f6d16d07  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-ganges.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-ganges.opb
IDLAUNCH: 24747
/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:        727520 kB
Buffers:         36116 kB
Cached:         246560 kB
SwapCached:        680 kB
Active:          23360 kB
Inactive:       261596 kB
HighTotal:      131008 kB
HighFree:          280 kB
LowTotal:       903652 kB
LowFree:        727240 kB
SwapTotal:     2097136 kB
SwapFree:      2095368 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5812 kB
Slab:            16452 kB
Committed_AS:    92716 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 13:13:04 (client local time) WITH STATUS 1 IN 17.3164 SECONDS
stats: 24747 7 17.3164 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	trivial falsity
#### 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): 0.91 0.93 0.90 1/55 20724
Raw data (stat): 20724 (runsolver) R 20723 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 749992115 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 0 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+9.99983 s]
Raw data (loadavg): 0.92 0.94 0.91 2/55 20724
Raw data (stat): 20724 (pb2sat) R 20723 8378 8377 0 -1 0 31210 0 0 0 932 66 0 0 25 0 1 0 749992115 91787264 20285 4294967295 134512640 135726644 3221224592 3221074496 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 22409 20285 300 300 0 22109 0
vsize: 89636
[startup+17.33 s]
Raw data (loadavg): 0.93 0.94 0.91 1/54 20724
Raw data (stat): 20724 (pb2sat) R 20723 8378 8377 0 -1 0 31210 0 0 0 932 66 0 0 25 0 1 0 749992115 91787264 20285 4294967295 134512640 135726644 3221224592 3221074496 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 22409 20285 300 300 0 22109 0
vsize: 0

Child status: 1
Real time (s): 17.3297
CPU time (s): 17.3164
CPU user time (s): 16.1385
CPU system time (s): 1.17782
CPU usage (%): 99.9229
Max. virtual memory (Kb): 89636
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####