./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 30e01a73
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 21:13:44,176 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-23 21:13:44,248 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf
[2023-11-23 21:13:44,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 21:13:44,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 21:13:44,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 21:13:44,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 21:13:44,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 21:13:44,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 21:13:44,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 21:13:44,286 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-11-23 21:13:44,287 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 21:13:44,287 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-11-23 21:13:44,288 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-23 21:13:44,289 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-11-23 21:13:44,289 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-11-23 21:13:44,290 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2023-11-23 21:13:44,290 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2023-11-23 21:13:44,291 INFO L153 SettingsManager]: * Interval Domain=false
[2023-11-23 21:13:44,292 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-23 21:13:44,292 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer
[2023-11-23 21:13:44,293 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC
[2023-11-23 21:13:44,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-23 21:13:44,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-23 21:13:44,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 21:13:44,295 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-23 21:13:44,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-23 21:13:44,297 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-23 21:13:44,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-23 21:13:44,298 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-23 21:13:44,298 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-23 21:13:44,298 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-23 21:13:44,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 21:13:44,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-23 21:13:44,300 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-23 21:13:44,300 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-23 21:13:44,301 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-23 21:13:44,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 21:13:44,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 21:13:44,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-23 21:13:44,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:13:44,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 21:13:44,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 21:13:44,303 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN
[2023-11-23 21:13:44,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-23 21:13:44,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 21:13:44,304 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-11-23 21:13:44,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 21:13:44,304 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190
[2023-11-23 21:13:44,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 21:13:44,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 21:13:44,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 21:13:44,595 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-23 21:13:44,596 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-23 21:13:44,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c
[2023-11-23 21:13:47,907 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-23 21:13:48,162 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-23 21:13:48,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c
[2023-11-23 21:13:48,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data/b58f48518/0f124a54e00b45cab6a872ec7558c975/FLAGadb16b392
[2023-11-23 21:13:48,190 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data/b58f48518/0f124a54e00b45cab6a872ec7558c975
[2023-11-23 21:13:48,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 21:13:48,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 21:13:48,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 21:13:48,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 21:13:48,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 21:13:48,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:48" (1/1) ...
[2023-11-23 21:13:48,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d69f53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:48, skipping insertion in model container
[2023-11-23 21:13:48,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:48" (1/1) ...
[2023-11-23 21:13:48,232 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:13:48,542 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:13:48,575 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
[2023-11-23 21:13:48,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29c12f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:48, skipping insertion in model container
[2023-11-23 21:13:48,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 21:13:48,577 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner
[2023-11-23 21:13:48,580 INFO L158 Benchmark]: Toolchain (without parser) took 383.91ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 81.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2023-11-23 21:13:48,581 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:13:48,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.04ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 81.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2023-11-23 21:13:48,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 381.04ms. Allocated memory is still 136.3MB. Free memory was 91.6MB in the beginning and 81.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- UnsupportedSyntaxResult [Line: 94]: Unsupported Syntax
Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 21:13:51,161 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-23 21:13:51,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf
[2023-11-23 21:13:51,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 21:13:51,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 21:13:51,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 21:13:51,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 21:13:51,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 21:13:51,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 21:13:51,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 21:13:51,343 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-11-23 21:13:51,343 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 21:13:51,344 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-11-23 21:13:51,345 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-11-23 21:13:51,346 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-11-23 21:13:51,346 INFO L153 SettingsManager]: * Interval Domain=false
[2023-11-23 21:13:51,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-23 21:13:51,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-23 21:13:51,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 21:13:51,349 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-23 21:13:51,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-23 21:13:51,350 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-23 21:13:51,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-23 21:13:51,351 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-23 21:13:51,352 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-23 21:13:51,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-23 21:13:51,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 21:13:51,353 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-23 21:13:51,353 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2023-11-23 21:13:51,354 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-23 21:13:51,355 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-23 21:13:51,356 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-23 21:13:51,356 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-23 21:13:51,356 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 21:13:51,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-23 21:13:51,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 21:13:51,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-23 21:13:51,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:13:51,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 21:13:51,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 21:13:51,359 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS
[2023-11-23 21:13:51,360 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-11-23 21:13:51,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 21:13:51,360 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-11-23 21:13:51,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 21:13:51,361 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190
[2023-11-23 21:13:51,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 21:13:51,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 21:13:51,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 21:13:51,806 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-23 21:13:51,807 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-23 21:13:51,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c
[2023-11-23 21:13:54,927 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-23 21:13:55,197 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-23 21:13:55,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c
[2023-11-23 21:13:55,211 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data/59307cabf/886894f1d3744815873f39cc57524866/FLAGf588ef08d
[2023-11-23 21:13:55,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/data/59307cabf/886894f1d3744815873f39cc57524866
[2023-11-23 21:13:55,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 21:13:55,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 21:13:55,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 21:13:55,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 21:13:55,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 21:13:55,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c98402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55, skipping insertion in model container
[2023-11-23 21:13:55,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,268 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:13:55,544 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:13:55,574 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution]
[2023-11-23 21:13:55,589 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:13:55,638 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:13:55,653 INFO L202 MainTranslator]: Completed pre-run
[2023-11-23 21:13:55,706 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:13:55,729 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:13:55,730 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:13:55,737 INFO L206 MainTranslator]: Completed translation
[2023-11-23 21:13:55,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55 WrapperNode
[2023-11-23 21:13:55,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 21:13:55,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 21:13:55,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 21:13:55,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 21:13:55,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,829 INFO L138 Inliner]: procedures = 30, calls = 75, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 370
[2023-11-23 21:13:55,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 21:13:55,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 21:13:55,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 21:13:55,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 21:13:55,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 21:13:55,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 21:13:55,937 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 21:13:55,937 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-23 21:13:55,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (1/1) ...
[2023-11-23 21:13:55,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:13:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 21:13:55,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 21:13:56,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 21:13:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 21:13:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-23 21:13:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-23 21:13:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 21:13:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2023-11-23 21:13:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-11-23 21:13:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-11-23 21:13:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-11-23 21:13:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-11-23 21:13:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-11-23 21:13:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2023-11-23 21:13:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2023-11-23 21:13:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-11-23 21:13:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-11-23 21:13:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-23 21:13:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 21:13:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 21:13:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 21:13:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2023-11-23 21:13:56,033 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-23 21:13:56,261 INFO L241 CfgBuilder]: Building ICFG
[2023-11-23 21:13:56,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 21:13:57,615 INFO L282 CfgBuilder]: Performing block encoding
[2023-11-23 21:13:58,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 21:13:58,425 INFO L309 CfgBuilder]: Removed 7 assume(true) statements.
[2023-11-23 21:13:58,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:58 BoogieIcfgContainer
[2023-11-23 21:13:58,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 21:13:58,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 21:13:58,430 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 21:13:58,433 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-23 21:13:58,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:55" (1/3) ...
[2023-11-23 21:13:58,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262aedf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:58, skipping insertion in model container
[2023-11-23 21:13:58,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:55" (2/3) ...
[2023-11-23 21:13:58,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262aedf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:58, skipping insertion in model container
[2023-11-23 21:13:58,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:58" (3/3) ...
[2023-11-23 21:13:58,438 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c
[2023-11-23 21:13:58,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 21:13:58,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations.
[2023-11-23 21:13:58,459 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-23 21:13:58,698 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2023-11-23 21:13:58,744 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 154 places, 160 transitions, 341 flow
[2023-11-23 21:14:05,159 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 158901 states, 142927 states have (on average 4.482316147403919) internal successors, (640644), 158900 states have internal predecessors, (640644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:14:05,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-23 21:14:05,202 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dfc57fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 21:14:05,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations.
[2023-11-23 21:14:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 158901 states, 142927 states have (on average 4.482316147403919) internal successors, (640644), 158900 states have internal predecessors, (640644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:14:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2023-11-23 21:14:05,389 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:14:05,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1]
[2023-11-23 21:14:05,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-23 21:14:05,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:14:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1199697, now seen corresponding path program 1 times
[2023-11-23 21:14:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-11-23 21:14:05,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635947308]
[2023-11-23 21:14:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:14:05,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-23 21:14:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat
[2023-11-23 21:14:05,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-23 21:14:05,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-23 21:14:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:14:05,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-23 21:14:05,576 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-23 21:14:05,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 7
[2023-11-23 21:14:05,740 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-23 21:14:05,756 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,774 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-23 21:14:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,806 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-23 21:14:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,827 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-23 21:14:05,836 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-23 21:14:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,865 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-23 21:14:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-23 21:14:05,908 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,918 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,924 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-23 21:14:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-23 21:14:05,941 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,955 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,960 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-23 21:14:05,973 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:05,988 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-23 21:14:05,999 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:05,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-23 21:14:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:06,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-23 21:14:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:14:06,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-23 21:14:06,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-11-23 21:14:06,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635947308]
[2023-11-23 21:14:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635947308] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:14:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:14:06,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-23 21:14:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218941121]
[2023-11-23 21:14:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:14:06,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 21:14:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-11-23 21:14:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 21:14:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:14:06,856 INFO L87 Difference]: Start difference. First operand has 158901 states, 142927 states have (on average 4.482316147403919) internal successors, (640644), 158900 states have internal predecessors, (640644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:14:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:14:11,227 INFO L93 Difference]: Finished difference Result 158896 states and 640639 transitions.
[2023-11-23 21:14:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-23 21:14:11,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2023-11-23 21:14:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:14:13,604 INFO L225 Difference]: With dead ends: 158896
[2023-11-23 21:14:13,605 INFO L226 Difference]: Without dead ends: 158896
[2023-11-23 21:14:13,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:14:13,612 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-11-23 21:14:13,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-11-23 21:14:14,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158896 states.
[2023-11-23 21:14:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158896 to 158896.
[2023-11-23 21:14:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158896 states, 142926 states have (on average 4.482312525362775) internal successors, (640639), 158895 states have internal predecessors, (640639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:14:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158896 states to 158896 states and 640639 transitions.
[2023-11-23 21:14:23,892 INFO L78 Accepts]: Start accepts. Automaton has 158896 states and 640639 transitions. Word has length 3
[2023-11-23 21:14:23,892 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:14:23,892 INFO L495 AbstractCegarLoop]: Abstraction has 158896 states and 640639 transitions.
[2023-11-23 21:14:23,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:14:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 158896 states and 640639 transitions.
[2023-11-23 21:14:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2023-11-23 21:14:23,893 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:14:23,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1]
[2023-11-23 21:14:23,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-11-23 21:14:24,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-23 21:14:24,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] ===
[2023-11-23 21:14:24,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:14:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1199698, now seen corresponding path program 1 times
[2023-11-23 21:14:24,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-11-23 21:14:24,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898675974]
[2023-11-23 21:14:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:14:24,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-23 21:14:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat
[2023-11-23 21:14:24,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-23 21:14:24,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0c982f-3f17-48bc-b45a-a47df9e8bdca/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-23 21:14:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:14:24,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-23 21:14:24,192 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-23 21:14:24,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2023-11-23 21:14:24,233 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-23 21:14:24,243 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-23 21:14:24,262 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,288 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-23 21:14:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,332 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-23 21:14:24,343 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-23 21:14:24,359 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-23 21:14:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,423 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,432 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-23 21:14:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-23 21:14:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,497 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-23 21:14:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-23 21:14:24,543 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-23 21:14:24,612 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2023-11-23 21:14:24,640 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-23 21:14:24,653 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-23 21:14:24,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-23 21:14:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:14:24,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-23 21:14:24,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-11-23 21:14:24,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898675974]
[2023-11-23 21:14:24,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898675974] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:14:24,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:14:24,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 21:14:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492361935]
[2023-11-23 21:14:24,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:14:24,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-23 21:14:24,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-11-23 21:14:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-23 21:14:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-23 21:14:24,747 INFO L87 Difference]: Start difference. First operand 158896 states and 640639 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:14:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:14:28,625 INFO L93 Difference]: Finished difference Result 158902 states and 640648 transitions.
[2023-11-23 21:14:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-23 21:14:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2023-11-23 21:14:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted.