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/miplib/normalized-mps-v2-13-7-pipex.opb
MD5SUMb9c1029cc1d97a8d60e984f96f5d3267
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 788263
Optimality of the best value was proved NO
Number of terms in the objective function 48
Biggest coefficient in the objective function 107865
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 2514082
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 107865
Number of bits of the biggest number in a constraint 17
Biggest sum of numbers in a constraint 2514082
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02684
Number of variables48
Total number of constraints73
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint1
Maximum length of a constraint16

Trace number 33972 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-05-27 18:46:16 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=17194 boxname=wulflinc12 idbench=1323 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  b9c1029cc1d97a8d60e984f96f5d3267  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-pipex.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-pipex.opb 0
IDLAUNCH: 17194
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        729916 kB
Buffers:         30480 kB
Cached:         253212 kB
SwapCached:        480 kB
Active:          41292 kB
Inactive:       244780 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        729664 kB
SwapTotal:     2097136 kB
SwapFree:      2096024 kB
Dirty:            4392 kB
Writeback:           0 kB
Mapped:           5680 kB
Slab:            13080 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-27 18:48:19 (client local time) WITH STATUS 30 IN 122.416 SECONDS
stats: 17194 0 122.416 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 0  (#equs: 0)
Nr of vars set: 0  (#equs: 0)
#decisions: 67;  #end-nodes: 36;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 36 / 83 (80)
#axs: 42, #non-axs: 36
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
result: model found (1)
Model found with constant:  1664105 (849976:>=*);
#decisions: 42;  #end-nodes: 24;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 24 / 80 (80)
#axs: 42, #non-axs: 60
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1664325 (849756:>=*);
#decisions: 26;  #end-nodes: 9;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 9 / 80 (80)
#axs: 42, #non-axs: 69
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1665185 (848896:>=*);
#decisions: 436;  #end-nodes: 319;
#proof improvement attempts: 0;  #restarts: 3
Current batch, end-nodes: 71 / 80 (80)
#axs: 42, #non-axs: 388
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1679769 (834312:>=*);
#decisions: 23;  #end-nodes: 7;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 7 / 80 (80)
#axs: 42, #non-axs: 395
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1689889 (824192:>=*);
#decisions: 1061;  #end-nodes: 822;
#proof improvement attempts: 0;  #restarts: 10
Current batch, end-nodes: 1 / 82 (82)
#axs: 42, #non-axs: 1214
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1698092 (815989:>=*);
#decisions: 33;  #end-nodes: 21;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 21 / 80 (80)
#axs: 42, #non-axs: 1235
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1698095 (815986:>=*);
#decisions: 87;  #end-nodes: 64;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 64 / 80 (80)
#axs: 42, #non-axs: 1299
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1698595 (815486:>=*);
#decisions: 2718;  #end-nodes: 2226;
#proof improvement attempts: 0;  #restarts: 26
Current batch, end-nodes: 39 / 86 (86)
#axs: 42, #non-axs: 2801
tight: meta-meta: start: 6, end: 9;  meta: start: 11, end (keep): 21
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1708787 (805294:>=*);
#decisions: 970;  #end-nodes: 758;
#proof improvement attempts: 0;  #restarts: 9
Current batch, end-nodes: 16 / 85 (82)
#axs: 42, #non-axs: 3534
tight: meta-meta: start: 6, end: 9;  meta: start: 11, end (keep): 21
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1717288 (796793:>=*);
#decisions: 43;  #end-nodes: 27;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 27 / 80 (80)
#axs: 42, #non-axs: 3556
tight: meta-meta: start: 6, end: 9;  meta: start: 11, end (keep): 21
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1722108 (791973:>=*);
#decisions: 2559;  #end-nodes: 2058;
#proof improvement attempts: 0;  #restarts: 24
Current batch, end-nodes: 32 / 86 (86)
#axs: 42, #non-axs: 3774
tight: meta-meta: start: 6, end: 9;  meta: start: 10, end (keep): 19
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1723245 (790836:>=*);
#decisions: 4301;  #end-nodes: 3492;
#proof improvement attempts: 0;  #restarts: 40
Current batch, end-nodes: 52 / 95 (90)
#axs: 42, #non-axs: 2337
tight: meta-meta: start: 6, end: 9;  meta: start: 8, end (keep): 15
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1725696 (788385:>=*);
#decisions: 112304;  #end-nodes: 97226;
#proof improvement attempts: 0;  #restarts: 607
Current batch, end-nodes: 220 / 231 (231)
#axs: 42, #non-axs: 62
tight: meta-meta: start: 3, end: 4;  meta: start: 3, end (keep): 4
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1725818 (788263:>=*);
#decisions: 1402811;  #end-nodes: 1270624;
#proof improvement attempts: 0;  #restarts: 2603
Current batch, end-nodes: 41939 / 46245 (730)
#axs: 45, #non-axs: 37
tight: meta-meta: start: 3, end: 3;  meta: start: 3, end (keep): 4
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:
  (pushed:) 1725818 (788263:>=*)

With an increment of the last pushed constant, a proof of false was found.
result: proof of false found (0)
seed: 0
Nr of vars set: 48  (#equs: 3)
Time taken: 2 min, 2 sec
times:
0m0.016s 0m0.007s
1m56.699s 0m5.584s
v  QUAN0101_bit0  QUAN0102_bit0 -QUAN0103_bit0 -QUAN0104_bit0 -QUAN0105_bit0 -QUAN0106_bit0 -QUAN0107_bit0 -QUAN0108_bit0 -QUAN0109_bit0 -QUAN0110_bit0  QUAN0111_bit0 -QUAN0112_bit0  QUAN0113_bit0 -QUAN0114_bit0 -QUAN0115_bit0 -QUAN0116_bit0 -QUAN0201_bit0 -QUAN0202_bit0 -QUAN0203_bit0 -QUAN0204_bit0 -QUAN0205_bit0 -QUAN0206_bit0  QUAN0207_bit0  QUAN0208_bit0 -QUAN0209_bit0 -QUAN0210_bit0 -QUAN0211_bit0  QUAN0212_bit0 -QUAN0213_bit0  QUAN0214_bit0  QUAN0215_bit0  QUAN0216_bit0 -QUAN0301_bit0 -QUAN0302_bit0  QUAN0303_bit0  QUAN0304_bit0  QUAN0305_bit0  QUAN0306_bit0 -QUAN0307_bit0 -QUAN0308_bit0  QUAN0309_bit0  QUAN0310_bit0 -QUAN0311_bit0 -QUAN0312_bit0 -QUAN0313_bit0 -QUAN0314_bit0 -QUAN0315_bit0 -QUAN0316_bit0 
s OPTIMUM FOUND
#### 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 0.95 0.90 1/54 5988
Raw data (stat): 5988 (runsolver) R 5987 32284 32283 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 800201798 884736 94 4294967295 134512640 135332820 3221224448 3221219612 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+10.0004 s]
Raw data (loadavg): 0.93 0.95 0.90 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+20.0016 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+30.0021 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+40.0028 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+50.003 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+60.0025 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+70.0036 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+80.0044 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+90.0049 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+100.005 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+110.007 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+120.007 s]
Raw data (loadavg): 0.99 0.97 0.91 2/55 5991
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+122.764 s]
Raw data (loadavg): 0.99 0.97 0.91 1/53 6001
Raw data (stat): 5988 (vallstSAT2005PB) S 5987 32284 32283 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 800201798 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 0 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 0

Child status: 30
Real time (s): 122.764
CPU time (s): 122.416
CPU user time (s): 116.753
CPU system time (s): 5.66314
CPU usage (%): 99.7171
Max. virtual memory (Kb): 2128
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	788263
#### END VERIFIER DATA ####