./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 21:09:22,270 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:09:22,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:09:22,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:09:22,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:09:22,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:09:22,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:09:22,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:09:22,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:09:22,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:09:22,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:09:22,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:09:22,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:09:22,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:09:22,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:09:22,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:09:22,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:09:22,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:09:22,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:09:22,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:09:22,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:09:22,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:09:22,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:09:22,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:09:22,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:09:22,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:09:22,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:09:22,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:09:22,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:09:22,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:09:22,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:09:22,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:09:22,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:09:22,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:09:22,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:09:22,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:09:22,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:09:22,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:09:22,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:09:22,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:09:22,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:09:22,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2022-11-02 21:09:22,403 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 21:09:22,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:09:22,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:09:22,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:09:22,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:09:22,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:09:22,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:09:22,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 21:09:22,407 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 21:09:22,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:09:22,408 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 21:09:22,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2022-11-02 21:09:22,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 21:09:22,409 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 21:09:22,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 21:09:22,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2022-11-02 21:09:22,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2022-11-02 21:09:22,410 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2022-11-02 21:09:22,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:09:22,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2022-11-02 21:09:22,410 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 21:09:22,410 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 21:09:22,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:09:22,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 21:09:22,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 21:09:22,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:09:22,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:09:22,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:09:22,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 21:09:22,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 21:09:22,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17
[2022-11-02 21:09:22,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:09:22,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:09:22,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:09:22,752 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 21:09:22,753 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 21:09:22,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c
[2022-11-02 21:09:22,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/b2348d6cf/d96c639cd7124298b656c473ff5245cf/FLAG40b5dda8d
[2022-11-02 21:09:23,765 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 21:09:23,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c
[2022-11-02 21:09:23,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/b2348d6cf/d96c639cd7124298b656c473ff5245cf/FLAG40b5dda8d
[2022-11-02 21:09:24,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/b2348d6cf/d96c639cd7124298b656c473ff5245cf
[2022-11-02 21:09:24,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:09:24,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:09:24,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:09:24,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:09:24,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:09:24,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:24" (1/1) ...
[2022-11-02 21:09:24,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247e983c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:24, skipping insertion in model container
[2022-11-02 21:09:24,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:24" (1/1) ...
[2022-11-02 21:09:24,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 21:09:24,368 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:09:25,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259]
[2022-11-02 21:09:25,365 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported
[2022-11-02 21:09:25,779 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:09:25,813 ERROR L326 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)
[2022-11-02 21:09:25,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7643e80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:25, skipping insertion in model container
[2022-11-02 21:09:25,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:09:25,815 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner
[2022-11-02 21:09:25,817 INFO L158 Benchmark]: Toolchain (without parser) took 1593.19ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.1MB in the beginning and 67.5MB in the end (delta: 9.6MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB.
[2022-11-02 21:09:25,817 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 21:09:25,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1588.89ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.1MB in the beginning and 67.5MB in the end (delta: 9.6MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB.
[2022-11-02 21:09:25,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1588.89ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.1MB in the beginning and 67.5MB in the end (delta: 9.6MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- UnsupportedSyntaxResult [Line: 2246]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 21:09:28,089 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:09:28,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:09:28,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:09:28,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:09:28,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:09:28,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:09:28,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:09:28,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:09:28,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:09:28,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:09:28,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:09:28,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:09:28,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:09:28,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:09:28,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:09:28,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:09:28,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:09:28,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:09:28,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:09:28,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:09:28,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:09:28,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:09:28,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:09:28,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:09:28,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:09:28,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:09:28,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:09:28,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:09:28,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:09:28,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:09:28,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:09:28,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:09:28,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:09:28,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:09:28,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:09:28,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:09:28,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:09:28,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:09:28,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:09:28,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:09:28,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2022-11-02 21:09:28,220 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 21:09:28,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:09:28,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:09:28,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:09:28,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:09:28,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:09:28,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:09:28,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 21:09:28,225 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 21:09:28,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:09:28,226 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 21:09:28,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2022-11-02 21:09:28,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 21:09:28,227 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 21:09:28,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 21:09:28,228 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2022-11-02 21:09:28,228 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2022-11-02 21:09:28,228 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2022-11-02 21:09:28,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:09:28,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2022-11-02 21:09:28,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2022-11-02 21:09:28,229 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2022-11-02 21:09:28,229 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 21:09:28,229 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 21:09:28,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:09:28,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 21:09:28,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 21:09:28,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:09:28,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:09:28,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:09:28,230 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2022-11-02 21:09:28,230 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2022-11-02 21:09:28,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-02 21:09:28,231 INFO L138 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_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17
[2022-11-02 21:09:28,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:09:28,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:09:28,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:09:28,718 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 21:09:28,718 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 21:09:28,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c
[2022-11-02 21:09:28,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/d3ba3ccc7/40724a0728964383a165e428136f94bc/FLAGd69841057
[2022-11-02 21:09:29,665 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 21:09:29,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c
[2022-11-02 21:09:29,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/d3ba3ccc7/40724a0728964383a165e428136f94bc/FLAGd69841057
[2022-11-02 21:09:30,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/data/d3ba3ccc7/40724a0728964383a165e428136f94bc
[2022-11-02 21:09:30,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:09:30,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:09:30,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:09:30,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:09:30,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:09:30,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:30" (1/1) ...
[2022-11-02 21:09:30,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2d3ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:30, skipping insertion in model container
[2022-11-02 21:09:30,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:30" (1/1) ...
[2022-11-02 21:09:30,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 21:09:30,381 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:09:31,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259]
[2022-11-02 21:09:31,771 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:09:31,835 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution]
[2022-11-02 21:09:31,873 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:09:31,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259]
[2022-11-02 21:09:32,315 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:09:32,353 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 21:09:32,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259]
[2022-11-02 21:09:32,770 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:09:32,880 INFO L208 MainTranslator]: Completed translation
[2022-11-02 21:09:32,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32 WrapperNode
[2022-11-02 21:09:32,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:09:32,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 21:09:32,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 21:09:32,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 21:09:32,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,190 INFO L138 Inliner]: procedures = 142, calls = 2887, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3022
[2022-11-02 21:09:33,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 21:09:33,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 21:09:33,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 21:09:33,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 21:09:33,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 21:09:33,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 21:09:33,547 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 21:09:33,547 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 21:09:33,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (1/1) ...
[2022-11-02 21:09:33,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:09:33,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:09:33,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 21:09:33,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 21:09:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation
[2022-11-02 21:09:33,627 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation
[2022-11-02 21:09:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1
[2022-11-02 21:09:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-11-02 21:09:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$
[2022-11-02 21:09:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2
[2022-11-02 21:09:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2022-11-02 21:09:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn
[2022-11-02 21:09:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn
[2022-11-02 21:09:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState
[2022-11-02 21:09:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState
[2022-11-02 21:09:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose
[2022-11-02 21:09:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose
[2022-11-02 21:09:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete
[2022-11-02 21:09:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete
[2022-11-02 21:09:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4
[2022-11-02 21:09:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest
[2022-11-02 21:09:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest
[2022-11-02 21:09:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2
[2022-11-02 21:09:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1
[2022-11-02 21:09:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange
[2022-11-02 21:09:33,630 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange
[2022-11-02 21:09:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8
[2022-11-02 21:09:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2022-11-02 21:09:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2022-11-02 21:09:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver
[2022-11-02 21:09:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver
[2022-11-02 21:09:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread
[2022-11-02 21:09:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread
[2022-11-02 21:09:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl
[2022-11-02 21:09:33,632 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl
[2022-11-02 21:09:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2022-11-02 21:09:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 21:09:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests
[2022-11-02 21:09:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests
[2022-11-02 21:09:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList
[2022-11-02 21:09:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList
[2022-11-02 21:09:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 21:09:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2022-11-02 21:09:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired
[2022-11-02 21:09:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired
[2022-11-02 21:09:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8
[2022-11-02 21:09:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2
[2022-11-02 21:09:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4
[2022-11-02 21:09:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2022-11-02 21:09:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo
[2022-11-02 21:09:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo
[2022-11-02 21:09:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1
[2022-11-02 21:09:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2
[2022-11-02 21:09:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 21:09:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-11-02 21:09:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2
[2022-11-02 21:09:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-11-02 21:09:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4
[2022-11-02 21:09:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject
[2022-11-02 21:09:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject
[2022-11-02 21:09:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove
[2022-11-02 21:09:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove
[2022-11-02 21:09:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1
[2022-11-02 21:09:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard
[2022-11-02 21:09:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard
[2022-11-02 21:09:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest
[2022-11-02 21:09:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest
[2022-11-02 21:09:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag
[2022-11-02 21:09:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag
[2022-11-02 21:09:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 21:09:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 21:09:34,299 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 21:09:34,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 21:09:34,373 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:34,387 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false;
[2022-11-02 21:09:34,388 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false;
[2022-11-02 21:09:34,398 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:34,940 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false;
[2022-11-02 21:09:34,940 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false;
[2022-11-02 21:09:34,996 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:35,014 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false;
[2022-11-02 21:09:35,015 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false;
[2022-11-02 21:09:35,021 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,245 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,268 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,319 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false;
[2022-11-02 21:09:37,319 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false;
[2022-11-02 21:09:37,323 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,324 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,325 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,761 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false;
[2022-11-02 21:09:37,761 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false;
[2022-11-02 21:09:37,762 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false;
[2022-11-02 21:09:37,762 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false;
[2022-11-02 21:09:37,762 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false;
[2022-11-02 21:09:37,762 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false;
[2022-11-02 21:09:37,767 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,782 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:37,785 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false;
[2022-11-02 21:09:42,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false;
[2022-11-02 21:09:42,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false;
[2022-11-02 21:09:42,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false;
[2022-11-02 21:09:42,486 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false;
[2022-11-02 21:09:42,486 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false;
[2022-11-02 21:09:42,672 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,808 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false;
[2022-11-02 21:09:42,808 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false;
[2022-11-02 21:09:42,822 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,831 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,835 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,842 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,846 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,854 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,856 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:42,859 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false;
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false;
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false;
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false;
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false;
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false;
[2022-11-02 21:09:47,976 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false;
[2022-11-02 21:09:47,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false;
[2022-11-02 21:09:47,978 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false;
[2022-11-02 21:09:48,000 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 21:09:48,017 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 21:09:48,017 INFO L300 CfgBuilder]: Removed 4 assume(true) statements.
[2022-11-02 21:09:48,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:48 BoogieIcfgContainer
[2022-11-02 21:09:48,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 21:09:48,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 21:09:48,024 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 21:09:48,027 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 21:09:48,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:30" (1/3) ...
[2022-11-02 21:09:48,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c546ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:48, skipping insertion in model container
[2022-11-02 21:09:48,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:32" (2/3) ...
[2022-11-02 21:09:48,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c546ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:48, skipping insertion in model container
[2022-11-02 21:09:48,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:48" (3/3) ...
[2022-11-02 21:09:48,031 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c
[2022-11-02 21:09:48,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 21:09:48,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations.
[2022-11-02 21:09:48,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:09:48,182 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;@7c8752c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:09:48,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations.
[2022-11-02 21:09:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95)
[2022-11-02 21:09:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2022-11-02 21:09:48,200 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:09:48,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1]
[2022-11-02 21:09:48,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:09:48,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:09:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times
[2022-11-02 21:09:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:09:48,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165044084]
[2022-11-02 21:09:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:09:48,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:09:48,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:09:48,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:09:48,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-11-02 21:09:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:09:50,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-11-02 21:09:50,115 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:09:50,400 INFO L356 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size
[2022-11-02 21:09:50,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 36
[2022-11-02 21:09:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:09:50,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:09:50,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:09:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165044084]
[2022-11-02 21:09:50,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165044084] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:09:50,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:09:50,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:09:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690200057]
[2022-11-02 21:09:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:09:50,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:09:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:09:50,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:09:50,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:09:50,529 INFO L87 Difference]: Start difference. First operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 3 states, 2 states have (on average 1.5) 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)
[2022-11-02 21:09:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:09:55,528 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions.
[2022-11-02 21:09:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:09:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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
[2022-11-02 21:09:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:09:55,554 INFO L225 Difference]: With dead ends: 2077
[2022-11-02 21:09:55,554 INFO L226 Difference]: Without dead ends: 2075
[2022-11-02 21:09:55,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:09:55,559 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2022-11-02 21:09:55,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2022-11-02 21:09:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states.
[2022-11-02 21:09:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075.
[2022-11-02 21:09:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1017 states have (on average 2.1435594886922322) internal successors, (2180), 1991 states have internal predecessors, (2180), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:09:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions.
[2022-11-02 21:09:55,724 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3
[2022-11-02 21:09:55,724 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:09:55,724 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions.
[2022-11-02 21:09:55,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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)
[2022-11-02 21:09:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions.
[2022-11-02 21:09:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2022-11-02 21:09:55,725 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:09:55,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1]
[2022-11-02 21:09:55,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-11-02 21:09:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:09:55,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:09:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:09:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times
[2022-11-02 21:09:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:09:55,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035225434]
[2022-11-02 21:09:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:09:55,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:09:55,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:09:55,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:09:55,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-11-02 21:09:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:09:57,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-11-02 21:09:57,738 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:09:57,789 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:09:57,799 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:09:57,805 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:09:57,808 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:09:58,006 INFO L356 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size
[2022-11-02 21:09:58,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 18 treesize of output 47
[2022-11-02 21:09:58,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20
[2022-11-02 21:09:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:09:58,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:09:58,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:09:58,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035225434]
[2022-11-02 21:09:58,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035225434] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:09:58,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:09:58,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:09:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510795016]
[2022-11-02 21:09:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:09:58,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:09:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:09:58,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:09:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:09:58,096 INFO L87 Difference]: Start difference. First operand 2075 states and 2347 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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)
[2022-11-02 21:10:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:04,017 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions.
[2022-11-02 21:10:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:10:04,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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
[2022-11-02 21:10:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:04,027 INFO L225 Difference]: With dead ends: 2073
[2022-11-02 21:10:04,027 INFO L226 Difference]: Without dead ends: 2073
[2022-11-02 21:10:04,027 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
[2022-11-02 21:10:04,029 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:04,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time]
[2022-11-02 21:10:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states.
[2022-11-02 21:10:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073.
[2022-11-02 21:10:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1017 states have (on average 2.1415929203539825) internal successors, (2178), 1989 states have internal predecessors, (2178), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions.
[2022-11-02 21:10:04,080 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3
[2022-11-02 21:10:04,080 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:04,080 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions.
[2022-11-02 21:10:04,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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)
[2022-11-02 21:10:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions.
[2022-11-02 21:10:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-11-02 21:10:04,081 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:04,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:04,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:04,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:04,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:04,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times
[2022-11-02 21:10:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:04,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308749805]
[2022-11-02 21:10:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:10:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:04,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:04,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-11-02 21:10:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:10:05,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-11-02 21:10:05,498 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:05,722 INFO L356 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size
[2022-11-02 21:10:05,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70
[2022-11-02 21:10:05,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-11-02 21:10:05,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11
[2022-11-02 21:10:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:05,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:10:05,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:05,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308749805]
[2022-11-02 21:10:05,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308749805] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:10:05,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:10:05,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:10:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556337893]
[2022-11-02 21:10:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:10:05,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 21:10:05,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 21:10:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:10:05,834 INFO L87 Difference]: Start difference. First operand 2073 states and 2345 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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)
[2022-11-02 21:10:11,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-11-02 21:10:20,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-11-02 21:10:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:20,114 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions.
[2022-11-02 21:10:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 21:10:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 6
[2022-11-02 21:10:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:20,123 INFO L225 Difference]: With dead ends: 2072
[2022-11-02 21:10:20,123 INFO L226 Difference]: Without dead ends: 2072
[2022-11-02 21:10:20,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-02 21:10:20,125 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:20,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time]
[2022-11-02 21:10:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states.
[2022-11-02 21:10:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072.
[2022-11-02 21:10:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions.
[2022-11-02 21:10:20,173 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6
[2022-11-02 21:10:20,173 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:20,174 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions.
[2022-11-02 21:10:20,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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)
[2022-11-02 21:10:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions.
[2022-11-02 21:10:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-11-02 21:10:20,174 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:20,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:20,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:20,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:20,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times
[2022-11-02 21:10:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697750190]
[2022-11-02 21:10:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:10:20,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:20,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:20,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:20,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-11-02 21:10:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:10:21,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 21:10:21,584 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:21,903 INFO L356 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size
[2022-11-02 21:10:21,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60
[2022-11-02 21:10:21,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-11-02 21:10:21,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-11-02 21:10:22,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9
[2022-11-02 21:10:22,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2022-11-02 21:10:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:22,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:10:22,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:22,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697750190]
[2022-11-02 21:10:22,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697750190] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:10:22,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:10:22,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:10:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955739307]
[2022-11-02 21:10:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:10:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 21:10:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 21:10:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:10:22,101 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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)
[2022-11-02 21:10:28,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-11-02 21:10:39,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-11-02 21:10:39,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:39,199 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions.
[2022-11-02 21:10:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-02 21:10:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 6
[2022-11-02 21:10:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:39,210 INFO L225 Difference]: With dead ends: 2071
[2022-11-02 21:10:39,211 INFO L226 Difference]: Without dead ends: 2071
[2022-11-02 21:10:39,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-02 21:10:39,212 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:39,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time]
[2022-11-02 21:10:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states.
[2022-11-02 21:10:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071.
[2022-11-02 21:10:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1016 states have (on average 2.141732283464567) internal successors, (2176), 1987 states have internal predecessors, (2176), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions.
[2022-11-02 21:10:39,263 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6
[2022-11-02 21:10:39,264 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:39,264 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions.
[2022-11-02 21:10:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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)
[2022-11-02 21:10:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions.
[2022-11-02 21:10:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-11-02 21:10:39,265 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:39,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:39,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:39,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:39,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:39,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times
[2022-11-02 21:10:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:39,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488281688]
[2022-11-02 21:10:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:10:39,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:39,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:39,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:39,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-11-02 21:10:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:10:40,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-11-02 21:10:40,698 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:40,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:10:40,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488281688]
[2022-11-02 21:10:40,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488281688] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:10:40,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:10:40,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:10:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797402246]
[2022-11-02 21:10:40,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:10:40,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:10:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:10:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:10:40,734 INFO L87 Difference]: Start difference. First operand 2071 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:10:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:40,843 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions.
[2022-11-02 21:10:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 21:10:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2022-11-02 21:10:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:40,852 INFO L225 Difference]: With dead ends: 2074
[2022-11-02 21:10:40,853 INFO L226 Difference]: Without dead ends: 2072
[2022-11-02 21:10:40,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:10:40,854 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:40,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7018 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 21:10:40,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states.
[2022-11-02 21:10:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072.
[2022-11-02 21:10:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions.
[2022-11-02 21:10:40,899 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13
[2022-11-02 21:10:40,899 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:40,899 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions.
[2022-11-02 21:10:40,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:10:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions.
[2022-11-02 21:10:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-11-02 21:10:40,900 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:40,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:40,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:41,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:41,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:41,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:41,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times
[2022-11-02 21:10:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:41,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066515762]
[2022-11-02 21:10:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:10:41,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:41,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:41,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:41,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2022-11-02 21:10:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:10:42,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-11-02 21:10:42,243 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:42,330 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:10:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:42,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:42,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066515762]
[2022-11-02 21:10:42,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066515762] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:10:42,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 21:10:42,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2022-11-02 21:10:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707166452]
[2022-11-02 21:10:42,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:10:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-11-02 21:10:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-11-02 21:10:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2022-11-02 21:10:42,505 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:10:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:42,844 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions.
[2022-11-02 21:10:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-11-02 21:10:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14
[2022-11-02 21:10:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:42,853 INFO L225 Difference]: With dead ends: 2084
[2022-11-02 21:10:42,853 INFO L226 Difference]: Without dead ends: 2082
[2022-11-02 21:10:42,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132
[2022-11-02 21:10:42,855 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 11 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:42,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9352 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-02 21:10:42,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states.
[2022-11-02 21:10:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082.
[2022-11-02 21:10:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1026 states have (on average 2.1335282651072123) internal successors, (2189), 1997 states have internal predecessors, (2189), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions.
[2022-11-02 21:10:42,899 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14
[2022-11-02 21:10:42,900 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:42,900 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions.
[2022-11-02 21:10:42,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:10:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions.
[2022-11-02 21:10:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-11-02 21:10:42,901 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:42,901 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:42,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:43,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:43,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times
[2022-11-02 21:10:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:43,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558783249]
[2022-11-02 21:10:43,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 21:10:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:43,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:43,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:43,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2022-11-02 21:10:46,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-11-02 21:10:46,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 21:10:46,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-11-02 21:10:46,140 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:46,192 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:46,387 INFO L356 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size
[2022-11-02 21:10:46,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81
[2022-11-02 21:10:48,310 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size
[2022-11-02 21:10:48,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32
[2022-11-02 21:10:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-11-02 21:10:48,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:10:48,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:48,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558783249]
[2022-11-02 21:10:48,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558783249] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:10:48,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:10:48,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:10:48,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970036820]
[2022-11-02 21:10:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:10:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:10:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:10:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:10:48,575 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:10:48,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:48,628 INFO L93 Difference]: Finished difference Result 2083 states and 2356 transitions.
[2022-11-02 21:10:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 21:10:48,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2022-11-02 21:10:48,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:48,637 INFO L225 Difference]: With dead ends: 2083
[2022-11-02 21:10:48,637 INFO L226 Difference]: Without dead ends: 2081
[2022-11-02 21:10:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:10:48,639 INFO L413 NwaCegarLoop]: 2335 mSDtfsCounter, 1 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1945 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:48,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5063 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1945 Unchecked, 0.0s Time]
[2022-11-02 21:10:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states.
[2022-11-02 21:10:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2081.
[2022-11-02 21:10:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 1026 states have (on average 2.1306042884990255) internal successors, (2186), 1996 states have internal predecessors, (2186), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2353 transitions.
[2022-11-02 21:10:48,699 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2353 transitions. Word has length 17
[2022-11-02 21:10:48,699 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:48,700 INFO L495 AbstractCegarLoop]: Abstraction has 2081 states and 2353 transitions.
[2022-11-02 21:10:48,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:10:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2353 transitions.
[2022-11-02 21:10:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-11-02 21:10:48,702 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:48,702 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:48,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:48,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:48,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times
[2022-11-02 21:10:48,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:48,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099821885]
[2022-11-02 21:10:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:10:48,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:48,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:48,932 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:48,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2022-11-02 21:10:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:10:50,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-11-02 21:10:50,334 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:50,489 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:10:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:50,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:50,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099821885]
[2022-11-02 21:10:50,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099821885] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:10:50,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 21:10:50,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-11-02 21:10:50,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636122305]
[2022-11-02 21:10:50,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:10:50,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-11-02 21:10:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:50,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-11-02 21:10:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182
[2022-11-02 21:10:50,964 INFO L87 Difference]: Start difference. First operand 2081 states and 2353 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:10:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:52,356 INFO L93 Difference]: Finished difference Result 2100 states and 2376 transitions.
[2022-11-02 21:10:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-11-02 21:10:52,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-11-02 21:10:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:52,366 INFO L225 Difference]: With dead ends: 2100
[2022-11-02 21:10:52,366 INFO L226 Difference]: Without dead ends: 2090
[2022-11-02 21:10:52,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650
[2022-11-02 21:10:52,368 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 45 mSDsluCounter, 11692 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 14033 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:52,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 14033 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-11-02 21:10:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states.
[2022-11-02 21:10:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090.
[2022-11-02 21:10:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1035 states have (on average 2.1207729468599035) internal successors, (2195), 2005 states have internal predecessors, (2195), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2362 transitions.
[2022-11-02 21:10:52,425 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2362 transitions. Word has length 17
[2022-11-02 21:10:52,426 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:52,426 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 2362 transitions.
[2022-11-02 21:10:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:10:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2362 transitions.
[2022-11-02 21:10:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-11-02 21:10:52,427 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:52,427 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:52,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:52,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:52,642 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times
[2022-11-02 21:10:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:52,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511605670]
[2022-11-02 21:10:52,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 21:10:52,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:52,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:52,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:52,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2022-11-02 21:10:56,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-11-02 21:10:56,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 21:10:56,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-11-02 21:10:56,413 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:56,456 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,460 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,465 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,485 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,495 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:56,713 INFO L356 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size
[2022-11-02 21:10:56,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 18 treesize of output 38
[2022-11-02 21:10:56,803 INFO L356 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size
[2022-11-02 21:10:56,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34
[2022-11-02 21:10:57,402 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:10:57,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14
[2022-11-02 21:10:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2022-11-02 21:10:57,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:10:57,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:10:57,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511605670]
[2022-11-02 21:10:57,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511605670] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:10:57,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:10:57,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:10:57,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161635820]
[2022-11-02 21:10:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:10:57,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 21:10:57,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:10:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 21:10:57,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:10:57,540 INFO L87 Difference]: Start difference. First operand 2090 states and 2362 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:10:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:10:57,619 INFO L93 Difference]: Finished difference Result 2089 states and 2361 transitions.
[2022-11-02 21:10:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 21:10:57,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23
[2022-11-02 21:10:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:10:57,628 INFO L225 Difference]: With dead ends: 2089
[2022-11-02 21:10:57,629 INFO L226 Difference]: Without dead ends: 2089
[2022-11-02 21:10:57,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:10:57,630 INFO L413 NwaCegarLoop]: 2335 mSDtfsCounter, 6 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5104 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1902 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 21:10:57,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5104 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 1902 Unchecked, 0.0s Time]
[2022-11-02 21:10:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states.
[2022-11-02 21:10:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2089.
[2022-11-02 21:10:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1035 states have (on average 2.119806763285024) internal successors, (2194), 2004 states have internal predecessors, (2194), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:10:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2361 transitions.
[2022-11-02 21:10:57,679 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2361 transitions. Word has length 23
[2022-11-02 21:10:57,680 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:10:57,680 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 2361 transitions.
[2022-11-02 21:10:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:10:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2361 transitions.
[2022-11-02 21:10:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-11-02 21:10:57,681 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:10:57,681 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:10:57,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0
[2022-11-02 21:10:57,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:10:57,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:10:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:10:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times
[2022-11-02 21:10:57,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:10:57,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522881502]
[2022-11-02 21:10:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:10:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:10:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:10:57,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:10:57,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2022-11-02 21:10:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:10:59,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-11-02 21:10:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:10:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:10:59,589 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:11:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:11:00,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:11:00,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522881502]
[2022-11-02 21:11:00,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522881502] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:11:00,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 21:11:00,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26
[2022-11-02 21:11:00,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227587786]
[2022-11-02 21:11:00,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:11:00,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-02 21:11:00,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:11:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-02 21:11:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650
[2022-11-02 21:11:00,762 INFO L87 Difference]: Start difference. First operand 2089 states and 2361 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:11:05,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:11:05,181 INFO L93 Difference]: Finished difference Result 2123 states and 2405 transitions.
[2022-11-02 21:11:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2022-11-02 21:11:05,182 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25
[2022-11-02 21:11:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:11:05,188 INFO L225 Difference]: With dead ends: 2123
[2022-11-02 21:11:05,188 INFO L226 Difference]: Without dead ends: 2107
[2022-11-02 21:11:05,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756
[2022-11-02 21:11:05,191 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 115 mSDsluCounter, 25739 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 28082 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-11-02 21:11:05,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 28082 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2022-11-02 21:11:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states.
[2022-11-02 21:11:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2107.
[2022-11-02 21:11:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1053 states have (on average 2.100664767331434) internal successors, (2212), 2022 states have internal predecessors, (2212), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:11:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2379 transitions.
[2022-11-02 21:11:05,238 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2379 transitions. Word has length 25
[2022-11-02 21:11:05,239 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:11:05,239 INFO L495 AbstractCegarLoop]: Abstraction has 2107 states and 2379 transitions.
[2022-11-02 21:11:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:11:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2379 transitions.
[2022-11-02 21:11:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-11-02 21:11:05,240 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:11:05,240 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:11:05,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2022-11-02 21:11:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:11:05,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:11:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:11:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times
[2022-11-02 21:11:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:11:05,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567175415]
[2022-11-02 21:11:05,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 21:11:05,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:11:05,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:11:05,466 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:11:05,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2022-11-02 21:11:08,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-11-02 21:11:08,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 21:11:08,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-11-02 21:11:08,848 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:11:09,259 INFO L356 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size
[2022-11-02 21:11:09,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123
[2022-11-02 21:11:13,898 INFO L356 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size
[2022-11-02 21:11:13,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68
[2022-11-02 21:11:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked.
[2022-11-02 21:11:14,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:11:14,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:11:14,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567175415]
[2022-11-02 21:11:14,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567175415] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:11:14,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:11:14,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 21:11:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739603373]
[2022-11-02 21:11:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:11:14,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:11:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:11:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:11:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:11:14,343 INFO L87 Difference]: Start difference. First operand 2107 states and 2379 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:11:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:11:18,636 INFO L93 Difference]: Finished difference Result 2106 states and 2378 transitions.
[2022-11-02 21:11:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 21:11:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37
[2022-11-02 21:11:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:11:18,643 INFO L225 Difference]: With dead ends: 2106
[2022-11-02 21:11:18,643 INFO L226 Difference]: Without dead ends: 2106
[2022-11-02 21:11:18,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:11:18,644 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 6 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5046 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-11-02 21:11:18,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5046 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 971 Invalid, 0 Unknown, 980 Unchecked, 4.2s Time]
[2022-11-02 21:11:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states.
[2022-11-02 21:11:18,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106.
[2022-11-02 21:11:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1053 states have (on average 2.0997150997150995) internal successors, (2211), 2021 states have internal predecessors, (2211), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:11:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2378 transitions.
[2022-11-02 21:11:18,684 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2378 transitions. Word has length 37
[2022-11-02 21:11:18,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:11:18,685 INFO L495 AbstractCegarLoop]: Abstraction has 2106 states and 2378 transitions.
[2022-11-02 21:11:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:11:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2378 transitions.
[2022-11-02 21:11:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-11-02 21:11:18,686 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:11:18,686 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:11:18,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2022-11-02 21:11:18,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:11:18,904 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:11:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:11:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times
[2022-11-02 21:11:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:11:18,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329036323]
[2022-11-02 21:11:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:11:18,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:11:18,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:11:18,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:11:18,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2022-11-02 21:11:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:11:20,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-11-02 21:11:20,281 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:11:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:11:21,260 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:11:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:11:24,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:11:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329036323]
[2022-11-02 21:11:24,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329036323] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:11:24,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 21:11:24,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50
[2022-11-02 21:11:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175546485]
[2022-11-02 21:11:24,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:11:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states
[2022-11-02 21:11:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:11:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2022-11-02 21:11:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450
[2022-11-02 21:11:24,921 INFO L87 Difference]: Start difference. First operand 2106 states and 2378 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:11:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:11:43,118 INFO L93 Difference]: Finished difference Result 2170 states and 2464 transitions.
[2022-11-02 21:11:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2022-11-02 21:11:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37
[2022-11-02 21:11:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:11:43,127 INFO L225 Difference]: With dead ends: 2170
[2022-11-02 21:11:43,127 INFO L226 Difference]: Without dead ends: 2142
[2022-11-02 21:11:43,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342
[2022-11-02 21:11:43,131 INFO L413 NwaCegarLoop]: 2348 mSDtfsCounter, 338 mSDsluCounter, 63254 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 65602 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-11-02 21:11:43,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 65602 Invalid, 1988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [358 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-11-02 21:11:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states.
[2022-11-02 21:11:43,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2142.
[2022-11-02 21:11:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1089 states have (on average 2.0633608815426996) internal successors, (2247), 2057 states have internal predecessors, (2247), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72)
[2022-11-02 21:11:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2414 transitions.
[2022-11-02 21:11:43,171 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2414 transitions. Word has length 37
[2022-11-02 21:11:43,171 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:11:43,171 INFO L495 AbstractCegarLoop]: Abstraction has 2142 states and 2414 transitions.
[2022-11-02 21:11:43,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-11-02 21:11:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2414 transitions.
[2022-11-02 21:11:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2022-11-02 21:11:43,173 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:11:43,173 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:11:43,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0
[2022-11-02 21:11:43,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:11:43,395 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:11:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:11:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times
[2022-11-02 21:11:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:11:43,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089427572]
[2022-11-02 21:11:43,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 21:11:43,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:11:43,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:11:43,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:11:43,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2022-11-02 21:11:46,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-11-02 21:11:46,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 21:11:46,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-11-02 21:11:46,859 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:11:46,926 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,929 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,933 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,945 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,948 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,952 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,960 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,963 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,966 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,971 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,974 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,979 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,982 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:46,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34
[2022-11-02 21:11:47,319 INFO L356 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size
[2022-11-02 21:11:47,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123
[2022-11-02 21:11:54,941 INFO L190 IndexEqualityManager]: detected not equals via solver
[2022-11-02 21:11:54,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14
[2022-11-02 21:11:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked.
[2022-11-02 21:11:55,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 21:11:55,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:11:55,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089427572]
[2022-11-02 21:11:55,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089427572] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:11:55,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:11:55,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:11:55,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862470074]
[2022-11-02 21:11:55,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:11:55,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-02 21:11:55,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:11:55,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-02 21:11:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:11:55,024 INFO L87 Difference]: Start difference. First operand 2142 states and 2414 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:12:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:12:07,657 INFO L93 Difference]: Finished difference Result 3532 states and 4049 transitions.
[2022-11-02 21:12:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-02 21:12:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61
[2022-11-02 21:12:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:12:07,670 INFO L225 Difference]: With dead ends: 3532
[2022-11-02 21:12:07,670 INFO L226 Difference]: Without dead ends: 3532
[2022-11-02 21:12:07,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2022-11-02 21:12:07,671 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 2704 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 4208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1270 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time
[2022-11-02 21:12:07,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 3076 Invalid, 4208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2894 Invalid, 0 Unknown, 1270 Unchecked, 12.5s Time]
[2022-11-02 21:12:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states.
[2022-11-02 21:12:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 2867.
[2022-11-02 21:12:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 1748 states have (on average 2.0635011441647597) internal successors, (3607), 2717 states have internal predecessors, (3607), 149 states have call successors, (149), 42 states have call predecessors, (149), 43 states have return successors, (132), 121 states have call predecessors, (132), 126 states have call successors, (132)
[2022-11-02 21:12:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3888 transitions.
[2022-11-02 21:12:07,754 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3888 transitions. Word has length 61
[2022-11-02 21:12:07,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:12:07,755 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 3888 transitions.
[2022-11-02 21:12:07,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-02 21:12:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3888 transitions.
[2022-11-02 21:12:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2022-11-02 21:12:07,756 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:12:07,756 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:12:07,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0
[2022-11-02 21:12:07,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3
[2022-11-02 21:12:07,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] ===
[2022-11-02 21:12:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:12:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times
[2022-11-02 21:12:07,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-11-02 21:12:07,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361712720]
[2022-11-02 21:12:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:12:07,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-11-02 21:12:07,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat
[2022-11-02 21:12:07,983 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-11-02 21:12:08,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e109d80c-bb5e-4531-bcca-27b7f80edcf5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2022-11-02 21:12:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:12:09,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 49 conjunts are in the unsatisfiable core
[2022-11-02 21:12:09,455 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:12:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:12:12,692 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:12:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:12:26,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-11-02 21:12:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361712720]
[2022-11-02 21:12:26,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361712720] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:12:26,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-02 21:12:26,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98
[2022-11-02 21:12:26,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876387732]
[2022-11-02 21:12:26,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:12:26,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states
[2022-11-02 21:12:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-11-02 21:12:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2022-11-02 21:12:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506
[2022-11-02 21:12:26,628 INFO L87 Difference]: Start difference. First operand 2867 states and 3888 transitions. Second operand has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)