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/MIPLIB/miplib3/normalized-mps-v2-13-7-egout.opb
MD5SUMfd101f0ba1a3813e843a38997ab7ed84
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 58880896
Optimality of the best value was proved NO
Number of terms in the objective function 1095
Biggest coefficient in the objective function 533200896
Number of bits for the biggest coefficient in the objective function 29
Sum of the numbers in the objective function 14929722305
Number of bits of the sum of numbers in the objective function 34
Biggest number in a constraint 533200896
Number of bits of the biggest number in a constraint 29
Biggest sum of numbers in a constraint 14929722305
Number of bits of the biggest sum of numbers34
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.04984
Number of variables1155
Total number of constraints153
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)55
Number of constraints which are nor clauses,nor cardinality constraints98
Minimum length of a constraint1
Maximum length of a constraint280

Trace number 41553 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-06-09 15:50:18 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29624 boxname=wulflinc6 idbench=1408 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  fd101f0ba1a3813e843a38997ab7ed84  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-13-7-egout.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-13-7-egout.opb
IDLAUNCH: 29624
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
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		: 451.042
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:        720844 kB
Buffers:         23688 kB
Cached:         269436 kB
SwapCached:        908 kB
Active:          28012 kB
Inactive:       267148 kB
HighTotal:      131008 kB
HighFree:        42644 kB
LowTotal:       903652 kB
LowFree:        678200 kB
SwapTotal:     2097136 kB
SwapFree:      2095216 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5000 kB
Slab:            13124 kB
Committed_AS:    63736 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 15:51:06 (client local time) WITH STATUS 0 IN 47.8467 SECONDS
stats: 29624 7 47.8467 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 1155 variables and 134 constraints.
c After prepocess the problem consists of 481 variables and 145 constraints.
c preprocess terminated 1.684 s
c Initial Lower Bound: 48825430
c Lower Bound Elapsed time: 0.06675
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 87454675 @ 43.689
c NEW SOLUTION FOUND: 87450854 @ 43.934
c NEW SOLUTION FOUND: 87450701 @ 44.028
c NEW SOLUTION FOUND: 87450497 @ 45.074
c NEW SOLUTION FOUND: 87450409 @ 45.965
c NEW SOLUTION FOUND: 87450402 @ 46.297
c NEW SOLUTION FOUND: 87450395 @ 46.545
#### 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 0.90 1/54 14106
Raw data (stat): 14106 (runsolver) R 14105 25568 25567 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 911486970 884736 94 4294967295 134512640 135332820 3221224448 3221219628 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+10.0008 s]
Raw data (loadavg): 0.93 0.96 0.91 2/54 14106
Raw data (stat): 14106 (bsolo_lpr_cuts-) R 14105 25568 25567 0 -1 0 5216 0 0 0 983 14 0 0 25 0 1 0 911486970 11485184 2114 4294967295 134512640 134716908 3221224560 3221222672 1074153770 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2804 2114 1111 63 0 2741 0
vsize: 11216
[startup+20.0012 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 14106
Raw data (stat): 14106 (bsolo_lpr_cuts-) R 14105 25568 25567 0 -1 0 10240 0 0 0 1970 27 0 0 25 0 1 0 911486970 11943936 2164 4294967295 134512640 134716908 3221224560 3221220720 1075093541 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2916 2164 1111 63 0 2853 0
vsize: 11664
[startup+30.0021 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 14106
Raw data (stat): 14106 (bsolo_lpr_cuts-) R 14105 25568 25567 0 -1 0 17775 0 0 0 2951 47 0 0 25 0 1 0 911486970 12279808 2247 4294967295 134512640 134716908 3221224560 3221220468 1074786484 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2998 2247 1111 63 0 2935 0
vsize: 11992
[startup+40.0022 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 14106
Raw data (stat): 14106 (bsolo_lpr_cuts-) R 14105 25568 25567 0 -1 0 23544 0 0 0 3936 63 0 0 25 0 1 0 911486970 12386304 2341 4294967295 134512640 134716908 3221224560 3221222816 1074153749 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3024 2341 1111 63 0 2961 0
vsize: 12096
[startup+47.8592 s]
Raw data (loadavg): 0.96 0.96 0.91 1/53 14106
Raw data (stat): 14106 (bsolo_lpr_cuts-) R 14105 25568 25567 0 -1 0 23544 0 0 0 3936 63 0 0 25 0 1 0 911486970 12386304 2341 4294967295 134512640 134716908 3221224560 3221222816 1074153749 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 3024 2341 1111 63 0 2961 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 47.8586
CPU time (s): 47.8467
CPU user time (s): 46.9629
CPU system time (s): 0.883865
CPU usage (%): 99.9751
Max. virtual memory (Kb): 12096
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####