./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label54.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 839c364b
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ac09a7f4a9facc2079abb274ef7b1f27d8fcbbd3e9664296e7fe44da52436c5
--- Real Ultimate output ---
This is Ultimate 0.2.2-hotfix-svcomp22-839c364
[2021-12-07 01:14:00,930 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-07 01:14:00,932 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-07 01:14:00,960 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-07 01:14:00,961 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-07 01:14:00,962 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-07 01:14:00,963 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-07 01:14:00,965 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-07 01:14:00,966 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-07 01:14:00,967 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-07 01:14:00,968 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-07 01:14:00,969 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-07 01:14:00,969 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-07 01:14:00,970 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-07 01:14:00,971 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-07 01:14:00,972 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-07 01:14:00,973 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-07 01:14:00,974 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-07 01:14:00,975 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-07 01:14:00,977 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-07 01:14:00,979 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-07 01:14:00,980 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-07 01:14:00,981 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-07 01:14:00,981 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-07 01:14:00,984 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-07 01:14:00,985 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-07 01:14:00,985 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-07 01:14:00,986 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-07 01:14:00,986 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-07 01:14:00,987 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-07 01:14:00,987 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-07 01:14:00,988 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-07 01:14:00,988 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-07 01:14:00,989 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-07 01:14:00,990 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-07 01:14:00,990 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-07 01:14:00,990 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-07 01:14:00,991 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-07 01:14:00,991 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-07 01:14:00,991 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-07 01:14:00,992 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-07 01:14:00,992 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-07 01:14:01,010 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-07 01:14:01,010 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-07 01:14:01,010 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-07 01:14:01,010 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-07 01:14:01,011 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-07 01:14:01,011 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-07 01:14:01,012 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-07 01:14:01,012 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-07 01:14:01,012 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-07 01:14:01,012 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-07 01:14:01,012 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-12-07 01:14:01,012 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-12-07 01:14:01,013 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-07 01:14:01,014 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-07 01:14:01,014 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-12-07 01:14:01,014 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-07 01:14:01,014 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-07 01:14:01,014 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-12-07 01:14:01,014 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 01:14:01,015 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-07 01:14:01,015 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-07 01:14:01,016 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-12-07 01:14:01,016 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_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/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_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa
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 ! call(reach_error())) )


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 -> 0ac09a7f4a9facc2079abb274ef7b1f27d8fcbbd3e9664296e7fe44da52436c5
[2021-12-07 01:14:01,196 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-07 01:14:01,213 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-07 01:14:01,216 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-07 01:14:01,217 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-07 01:14:01,217 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-07 01:14:01,218 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem05_label54.c
[2021-12-07 01:14:01,260 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/data/f46047168/2dfc8bfffc484d3295d912d0ff22ba47/FLAG24627750d
[2021-12-07 01:14:01,920 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-07 01:14:01,920 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/sv-benchmarks/c/eca-rers2012/Problem05_label54.c
[2021-12-07 01:14:01,954 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/data/f46047168/2dfc8bfffc484d3295d912d0ff22ba47/FLAG24627750d
[2021-12-07 01:14:02,249 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/data/f46047168/2dfc8bfffc484d3295d912d0ff22ba47
[2021-12-07 01:14:02,253 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-07 01:14:02,255 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-07 01:14:02,258 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-07 01:14:02,259 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-07 01:14:02,267 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-07 01:14:02,268 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:14:02" (1/1) ...
[2021-12-07 01:14:02,271 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22615c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:02, skipping insertion in model container
[2021-12-07 01:14:02,272 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:14:02" (1/1) ...
[2021-12-07 01:14:02,292 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-07 01:14:02,495 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-07 01:14:03,803 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_8747cc60-6369-4985-973b-42cf12935068/sv-benchmarks/c/eca-rers2012/Problem05_label54.c[380115,380128]
[2021-12-07 01:14:03,818 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 01:14:03,824 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-07 01:14:04,621 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_8747cc60-6369-4985-973b-42cf12935068/sv-benchmarks/c/eca-rers2012/Problem05_label54.c[380115,380128]
[2021-12-07 01:14:04,624 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-07 01:14:04,664 INFO  L208         MainTranslator]: Completed translation
[2021-12-07 01:14:04,665 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04 WrapperNode
[2021-12-07 01:14:04,665 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-07 01:14:04,665 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-07 01:14:04,665 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-07 01:14:04,665 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-07 01:14:04,671 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:04,726 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:04,994 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2021-12-07 01:14:04,995 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-07 01:14:04,995 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-07 01:14:04,995 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-07 01:14:04,995 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-07 01:14:05,002 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,002 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,063 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,063 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,222 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,258 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,277 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,325 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-07 01:14:05,326 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-07 01:14:05,327 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-07 01:14:05,327 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-07 01:14:05,328 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (1/1) ...
[2021-12-07 01:14:05,337 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-07 01:14:05,347 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 01:14:05,360 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-12-07 01:14:05,366 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-12-07 01:14:05,417 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-07 01:14:05,417 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-07 01:14:05,417 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-07 01:14:05,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-07 01:14:05,488 INFO  L236             CfgBuilder]: Building ICFG
[2021-12-07 01:14:05,489 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-07 01:14:09,668 INFO  L277             CfgBuilder]: Performing block encoding
[2021-12-07 01:14:09,691 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-07 01:14:09,692 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-07 01:14:09,696 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:14:09 BoogieIcfgContainer
[2021-12-07 01:14:09,696 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-07 01:14:09,698 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-07 01:14:09,698 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-12-07 01:14:09,701 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-12-07 01:14:09,702 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:14:02" (1/3) ...
[2021-12-07 01:14:09,702 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24238f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:14:09, skipping insertion in model container
[2021-12-07 01:14:09,702 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:14:04" (2/3) ...
[2021-12-07 01:14:09,703 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24238f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:14:09, skipping insertion in model container
[2021-12-07 01:14:09,703 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:14:09" (3/3) ...
[2021-12-07 01:14:09,704 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label54.c
[2021-12-07 01:14:09,709 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-07 01:14:09,709 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-07 01:14:09,757 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-07 01:14:09,762 INFO  L339      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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-12-07 01:14:09,763 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-07 01:14:09,811 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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)
[2021-12-07 01:14:09,937 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1677
[2021-12-07 01:14:09,937 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:09,939 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:09,939 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:09,945 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:09,946 INFO  L85        PathProgramCache]: Analyzing trace with hash -2143191438, now seen corresponding path program 1 times
[2021-12-07 01:14:09,953 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:09,953 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933334889]
[2021-12-07 01:14:09,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:09,954 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:10,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:11,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 01:14:11,819 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:11,820 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933334889]
[2021-12-07 01:14:11,820 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933334889] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:11,820 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:11,821 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:11,822 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430813738]
[2021-12-07 01:14:11,822 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:11,828 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:14:11,828 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:11,847 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:14:11,848 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:14:11,854 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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)
[2021-12-07 01:14:22,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:22,079 INFO  L93              Difference]: Finished difference Result 9571 states and 18469 transitions.
[2021-12-07 01:14:22,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-12-07 01:14:22,081 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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 1676
[2021-12-07 01:14:22,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:22,130 INFO  L225             Difference]: With dead ends: 9571
[2021-12-07 01:14:22,130 INFO  L226             Difference]: Without dead ends: 7316
[2021-12-07 01:14:22,137 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-07 01:14:22,140 INFO  L933         BasicCegarLoop]: 2468 mSDtfsCounter, 3720 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15542 mSolverCounterSat, 4555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 20097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4555 IncrementalHoareTripleChecker+Valid, 15542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:22,141 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3720 Valid, 2851 Invalid, 20097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4555 Valid, 15542 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time]
[2021-12-07 01:14:22,164 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7316 states.
[2021-12-07 01:14:22,281 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5591.
[2021-12-07 01:14:22,291 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5591 states, 5590 states have (on average 1.6051878354203934) internal successors, (8973), 5590 states have internal predecessors, (8973), 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)
[2021-12-07 01:14:22,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 8973 transitions.
[2021-12-07 01:14:22,306 INFO  L78                 Accepts]: Start accepts. Automaton has 5591 states and 8973 transitions. Word has length 1676
[2021-12-07 01:14:22,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:22,309 INFO  L470      AbstractCegarLoop]: Abstraction has 5591 states and 8973 transitions.
[2021-12-07 01:14:22,310 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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)
[2021-12-07 01:14:22,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 5591 states and 8973 transitions.
[2021-12-07 01:14:22,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1695
[2021-12-07 01:14:22,407 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:22,408 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:22,408 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-07 01:14:22,408 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:22,409 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:22,409 INFO  L85        PathProgramCache]: Analyzing trace with hash -1996520508, now seen corresponding path program 1 times
[2021-12-07 01:14:22,409 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:22,410 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571064854]
[2021-12-07 01:14:22,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:22,410 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:22,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:23,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 01:14:23,508 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:23,508 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571064854]
[2021-12-07 01:14:23,508 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571064854] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:23,508 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:23,509 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:23,509 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470497574]
[2021-12-07 01:14:23,509 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:23,512 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:14:23,512 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:23,512 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:14:23,512 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:23,513 INFO  L87              Difference]: Start difference. First operand 5591 states and 8973 transitions. Second operand  has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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)
[2021-12-07 01:14:27,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:27,443 INFO  L93              Difference]: Finished difference Result 14654 states and 24587 transitions.
[2021-12-07 01:14:27,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:14:27,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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 1694
[2021-12-07 01:14:27,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:27,480 INFO  L225             Difference]: With dead ends: 14654
[2021-12-07 01:14:27,480 INFO  L226             Difference]: Without dead ends: 9065
[2021-12-07 01:14:27,486 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:27,487 INFO  L933         BasicCegarLoop]: 3447 mSDtfsCounter, 611 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 2230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 6952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2230 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:27,488 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 3694 Invalid, 6952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2230 Valid, 4722 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2021-12-07 01:14:27,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9065 states.
[2021-12-07 01:14:27,603 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 9059.
[2021-12-07 01:14:27,615 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9059 states, 9058 states have (on average 1.4918304261426363) internal successors, (13513), 9058 states have internal predecessors, (13513), 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)
[2021-12-07 01:14:27,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13513 transitions.
[2021-12-07 01:14:27,631 INFO  L78                 Accepts]: Start accepts. Automaton has 9059 states and 13513 transitions. Word has length 1694
[2021-12-07 01:14:27,633 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:27,633 INFO  L470      AbstractCegarLoop]: Abstraction has 9059 states and 13513 transitions.
[2021-12-07 01:14:27,634 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 3 states have internal predecessors, (1694), 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)
[2021-12-07 01:14:27,634 INFO  L276                IsEmpty]: Start isEmpty. Operand 9059 states and 13513 transitions.
[2021-12-07 01:14:27,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1706
[2021-12-07 01:14:27,663 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:27,665 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:27,665 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-07 01:14:27,665 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:27,665 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:27,666 INFO  L85        PathProgramCache]: Analyzing trace with hash -1511689178, now seen corresponding path program 1 times
[2021-12-07 01:14:27,666 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:27,666 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399420098]
[2021-12-07 01:14:27,667 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:27,667 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:27,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:28,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-07 01:14:28,197 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:28,197 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399420098]
[2021-12-07 01:14:28,197 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399420098] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:28,197 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:28,198 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:28,198 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350261945]
[2021-12-07 01:14:28,198 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:28,200 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:14:28,200 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:28,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:14:28,200 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:28,201 INFO  L87              Difference]: Start difference. First operand 9059 states and 13513 transitions. Second operand  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 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)
[2021-12-07 01:14:31,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:31,826 INFO  L93              Difference]: Finished difference Result 25052 states and 38282 transitions.
[2021-12-07 01:14:31,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:14:31,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 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 1705
[2021-12-07 01:14:31,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:31,869 INFO  L225             Difference]: With dead ends: 25052
[2021-12-07 01:14:31,869 INFO  L226             Difference]: Without dead ends: 15995
[2021-12-07 01:14:31,877 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:31,878 INFO  L933         BasicCegarLoop]: 3131 mSDtfsCounter, 2041 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 6874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:31,878 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 3557 Invalid, 6874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2021-12-07 01:14:31,891 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15995 states.
[2021-12-07 01:14:32,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15995 to 15952.
[2021-12-07 01:14:32,076 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15952 states, 15951 states have (on average 1.4308193843646166) internal successors, (22823), 15951 states have internal predecessors, (22823), 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)
[2021-12-07 01:14:32,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15952 states to 15952 states and 22823 transitions.
[2021-12-07 01:14:32,096 INFO  L78                 Accepts]: Start accepts. Automaton has 15952 states and 22823 transitions. Word has length 1705
[2021-12-07 01:14:32,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:32,097 INFO  L470      AbstractCegarLoop]: Abstraction has 15952 states and 22823 transitions.
[2021-12-07 01:14:32,098 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 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)
[2021-12-07 01:14:32,098 INFO  L276                IsEmpty]: Start isEmpty. Operand 15952 states and 22823 transitions.
[2021-12-07 01:14:32,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1712
[2021-12-07 01:14:32,133 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:32,134 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:32,134 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-07 01:14:32,134 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:32,134 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:32,135 INFO  L85        PathProgramCache]: Analyzing trace with hash 995949807, now seen corresponding path program 1 times
[2021-12-07 01:14:32,135 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:32,135 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398664650]
[2021-12-07 01:14:32,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:32,136 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:32,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:32,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-12-07 01:14:32,591 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:32,591 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398664650]
[2021-12-07 01:14:32,591 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398664650] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:32,591 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:32,591 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:32,592 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015925942]
[2021-12-07 01:14:32,592 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:32,593 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:14:32,593 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:32,594 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:14:32,594 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:32,595 INFO  L87              Difference]: Start difference. First operand 15952 states and 22823 transitions. Second operand  has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 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)
[2021-12-07 01:14:36,477 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:36,477 INFO  L93              Difference]: Finished difference Result 33673 states and 47498 transitions.
[2021-12-07 01:14:36,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:14:36,478 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 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 1711
[2021-12-07 01:14:36,478 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:36,506 INFO  L225             Difference]: With dead ends: 33673
[2021-12-07 01:14:36,506 INFO  L226             Difference]: Without dead ends: 17723
[2021-12-07 01:14:36,516 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:36,517 INFO  L933         BasicCegarLoop]: 3336 mSDtfsCounter, 1896 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 5172 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 7285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 5172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:36,518 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1896 Valid, 3580 Invalid, 7285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 5172 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2021-12-07 01:14:36,532 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17723 states.
[2021-12-07 01:14:36,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17723 to 17653.
[2021-12-07 01:14:36,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17653 states, 17652 states have (on average 1.2745297983231363) internal successors, (22498), 17652 states have internal predecessors, (22498), 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)
[2021-12-07 01:14:36,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17653 states to 17653 states and 22498 transitions.
[2021-12-07 01:14:36,684 INFO  L78                 Accepts]: Start accepts. Automaton has 17653 states and 22498 transitions. Word has length 1711
[2021-12-07 01:14:36,685 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:36,685 INFO  L470      AbstractCegarLoop]: Abstraction has 17653 states and 22498 transitions.
[2021-12-07 01:14:36,685 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 567.0) internal successors, (1701), 3 states have internal predecessors, (1701), 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)
[2021-12-07 01:14:36,685 INFO  L276                IsEmpty]: Start isEmpty. Operand 17653 states and 22498 transitions.
[2021-12-07 01:14:36,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1724
[2021-12-07 01:14:36,718 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:36,719 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-07 01:14:36,719 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-07 01:14:36,719 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:36,720 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:36,720 INFO  L85        PathProgramCache]: Analyzing trace with hash -563779592, now seen corresponding path program 1 times
[2021-12-07 01:14:36,720 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:36,720 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508675732]
[2021-12-07 01:14:36,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:36,721 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:36,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:37,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-12-07 01:14:37,262 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:37,262 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508675732]
[2021-12-07 01:14:37,262 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508675732] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:37,262 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:37,262 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:37,262 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795568181]
[2021-12-07 01:14:37,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:37,264 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:14:37,264 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:37,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:14:37,264 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:14:37,265 INFO  L87              Difference]: Start difference. First operand 17653 states and 22498 transitions. Second operand  has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 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)
[2021-12-07 01:14:42,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:42,896 INFO  L93              Difference]: Finished difference Result 50609 states and 65120 transitions.
[2021-12-07 01:14:42,897 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:14:42,897 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 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 1723
[2021-12-07 01:14:42,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:42,929 INFO  L225             Difference]: With dead ends: 50609
[2021-12-07 01:14:42,929 INFO  L226             Difference]: Without dead ends: 32958
[2021-12-07 01:14:42,941 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:14:42,942 INFO  L933         BasicCegarLoop]: 1575 mSDtfsCounter, 4057 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 9520 mSolverCounterSat, 2430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4057 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 11950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2430 IncrementalHoareTripleChecker+Valid, 9520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:42,942 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4057 Valid, 2027 Invalid, 11950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2430 Valid, 9520 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2021-12-07 01:14:42,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32958 states.
[2021-12-07 01:14:43,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32958 to 32947.
[2021-12-07 01:14:43,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32947 states, 32946 states have (on average 1.212559946579251) internal successors, (39949), 32946 states have internal predecessors, (39949), 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)
[2021-12-07 01:14:43,286 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32947 states to 32947 states and 39949 transitions.
[2021-12-07 01:14:43,286 INFO  L78                 Accepts]: Start accepts. Automaton has 32947 states and 39949 transitions. Word has length 1723
[2021-12-07 01:14:43,287 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:43,287 INFO  L470      AbstractCegarLoop]: Abstraction has 32947 states and 39949 transitions.
[2021-12-07 01:14:43,287 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 425.5) internal successors, (1702), 3 states have internal predecessors, (1702), 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)
[2021-12-07 01:14:43,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 32947 states and 39949 transitions.
[2021-12-07 01:14:43,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1760
[2021-12-07 01:14:43,331 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:43,332 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:43,332 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-12-07 01:14:43,332 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:43,333 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:43,333 INFO  L85        PathProgramCache]: Analyzing trace with hash -365835339, now seen corresponding path program 1 times
[2021-12-07 01:14:43,333 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:43,333 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233760908]
[2021-12-07 01:14:43,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:43,334 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:43,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:43,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 152 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2021-12-07 01:14:43,870 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:43,870 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233760908]
[2021-12-07 01:14:43,870 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233760908] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:43,870 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:43,870 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 01:14:43,870 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594056265]
[2021-12-07 01:14:43,870 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:43,872 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:14:43,872 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:43,872 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:14:43,872 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:43,873 INFO  L87              Difference]: Start difference. First operand 32947 states and 39949 transitions. Second operand  has 3 states, 3 states have (on average 574.0) internal successors, (1722), 2 states have internal predecessors, (1722), 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)
[2021-12-07 01:14:47,350 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:47,350 INFO  L93              Difference]: Finished difference Result 81169 states and 97347 transitions.
[2021-12-07 01:14:47,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:14:47,351 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 574.0) internal successors, (1722), 2 states have internal predecessors, (1722), 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 1759
[2021-12-07 01:14:47,351 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:47,390 INFO  L225             Difference]: With dead ends: 81169
[2021-12-07 01:14:47,391 INFO  L226             Difference]: Without dead ends: 48224
[2021-12-07 01:14:47,409 INFO  L932         BasicCegarLoop]: 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
[2021-12-07 01:14:47,410 INFO  L933         BasicCegarLoop]: 1074 mSDtfsCounter, 3154 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 1207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 5980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1207 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:47,410 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3154 Valid, 1160 Invalid, 5980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1207 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2021-12-07 01:14:47,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48224 states.
[2021-12-07 01:14:47,734 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48224 to 46526.
[2021-12-07 01:14:47,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46526 states, 46525 states have (on average 1.1436432025792584) internal successors, (53208), 46525 states have internal predecessors, (53208), 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)
[2021-12-07 01:14:47,806 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46526 states to 46526 states and 53208 transitions.
[2021-12-07 01:14:47,806 INFO  L78                 Accepts]: Start accepts. Automaton has 46526 states and 53208 transitions. Word has length 1759
[2021-12-07 01:14:47,806 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:47,806 INFO  L470      AbstractCegarLoop]: Abstraction has 46526 states and 53208 transitions.
[2021-12-07 01:14:47,807 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 574.0) internal successors, (1722), 2 states have internal predecessors, (1722), 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)
[2021-12-07 01:14:47,807 INFO  L276                IsEmpty]: Start isEmpty. Operand 46526 states and 53208 transitions.
[2021-12-07 01:14:47,848 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1816
[2021-12-07 01:14:47,849 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:47,850 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:47,850 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-07 01:14:47,850 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:47,850 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:47,851 INFO  L85        PathProgramCache]: Analyzing trace with hash 153071286, now seen corresponding path program 1 times
[2021-12-07 01:14:47,851 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:47,851 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310779958]
[2021-12-07 01:14:47,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:47,851 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:48,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:48,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2021-12-07 01:14:48,420 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:48,420 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310779958]
[2021-12-07 01:14:48,420 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310779958] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:48,420 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:48,420 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:48,420 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009818642]
[2021-12-07 01:14:48,420 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:48,422 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:14:48,422 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:48,422 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:14:48,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:48,423 INFO  L87              Difference]: Start difference. First operand 46526 states and 53208 transitions. Second operand  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 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)
[2021-12-07 01:14:52,565 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:52,565 INFO  L93              Difference]: Finished difference Result 113438 states and 131563 transitions.
[2021-12-07 01:14:52,566 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:14:52,566 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 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 1815
[2021-12-07 01:14:52,566 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:52,622 INFO  L225             Difference]: With dead ends: 113438
[2021-12-07 01:14:52,622 INFO  L226             Difference]: Without dead ends: 66914
[2021-12-07 01:14:52,643 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:52,644 INFO  L933         BasicCegarLoop]: 1840 mSDtfsCounter, 1886 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 1399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 7030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1399 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:52,644 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 2133 Invalid, 7030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1399 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2021-12-07 01:14:52,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66914 states.
[2021-12-07 01:14:53,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66914 to 66904.
[2021-12-07 01:14:53,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66904 states, 66903 states have (on average 1.126675933814627) internal successors, (75378), 66903 states have internal predecessors, (75378), 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)
[2021-12-07 01:14:53,214 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66904 states to 66904 states and 75378 transitions.
[2021-12-07 01:14:53,214 INFO  L78                 Accepts]: Start accepts. Automaton has 66904 states and 75378 transitions. Word has length 1815
[2021-12-07 01:14:53,214 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:53,214 INFO  L470      AbstractCegarLoop]: Abstraction has 66904 states and 75378 transitions.
[2021-12-07 01:14:53,215 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 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)
[2021-12-07 01:14:53,215 INFO  L276                IsEmpty]: Start isEmpty. Operand 66904 states and 75378 transitions.
[2021-12-07 01:14:53,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1828
[2021-12-07 01:14:53,277 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:53,278 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:53,278 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-07 01:14:53,279 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:53,279 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:53,279 INFO  L85        PathProgramCache]: Analyzing trace with hash 973506904, now seen corresponding path program 1 times
[2021-12-07 01:14:53,279 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:53,280 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108596114]
[2021-12-07 01:14:53,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:53,280 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:53,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:53,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 207 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2021-12-07 01:14:53,868 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:53,869 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108596114]
[2021-12-07 01:14:53,869 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108596114] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:14:53,869 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:14:53,869 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:14:53,869 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302399642]
[2021-12-07 01:14:53,869 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:14:53,871 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:14:53,871 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:14:53,871 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:14:53,871 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:53,872 INFO  L87              Difference]: Start difference. First operand 66904 states and 75378 transitions. Second operand  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 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)
[2021-12-07 01:14:57,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:14:57,679 INFO  L93              Difference]: Finished difference Result 145717 states and 163947 transitions.
[2021-12-07 01:14:57,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:14:57,680 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 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 1827
[2021-12-07 01:14:57,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:14:57,741 INFO  L225             Difference]: With dead ends: 145717
[2021-12-07 01:14:57,741 INFO  L226             Difference]: Without dead ends: 78815
[2021-12-07 01:14:57,760 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:14:57,760 INFO  L933         BasicCegarLoop]: 3846 mSDtfsCounter, 1707 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 5672 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 4071 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 5672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2021-12-07 01:14:57,761 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1707 Valid, 4071 Invalid, 6068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 5672 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2021-12-07 01:14:57,810 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78815 states.
[2021-12-07 01:14:58,299 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78815 to 77097.
[2021-12-07 01:14:58,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77097 states, 77096 states have (on average 1.1167246030922486) internal successors, (86095), 77096 states have internal predecessors, (86095), 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)
[2021-12-07 01:14:58,430 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77097 states to 77097 states and 86095 transitions.
[2021-12-07 01:14:58,431 INFO  L78                 Accepts]: Start accepts. Automaton has 77097 states and 86095 transitions. Word has length 1827
[2021-12-07 01:14:58,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:14:58,431 INFO  L470      AbstractCegarLoop]: Abstraction has 77097 states and 86095 transitions.
[2021-12-07 01:14:58,432 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 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)
[2021-12-07 01:14:58,432 INFO  L276                IsEmpty]: Start isEmpty. Operand 77097 states and 86095 transitions.
[2021-12-07 01:14:58,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1903
[2021-12-07 01:14:58,500 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:14:58,501 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:14:58,501 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-12-07 01:14:58,501 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:14:58,502 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:14:58,502 INFO  L85        PathProgramCache]: Analyzing trace with hash 786928524, now seen corresponding path program 1 times
[2021-12-07 01:14:58,503 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:14:58,503 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649809607]
[2021-12-07 01:14:58,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:58,503 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:14:58,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:59,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 351 backedges. 270 proven. 70 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-12-07 01:14:59,217 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:14:59,217 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649809607]
[2021-12-07 01:14:59,217 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649809607] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-07 01:14:59,217 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215630369]
[2021-12-07 01:14:59,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:14:59,218 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-07 01:14:59,218 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3
[2021-12-07 01:14:59,219 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-07 01:14:59,220 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-07 01:14:59,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:14:59,620 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-12-07 01:14:59,652 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-12-07 01:15:00,924 INFO  L134       CoverageAnalysis]: Checked inductivity of 351 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked.
[2021-12-07 01:15:00,924 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-12-07 01:15:00,925 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [215630369] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:00,925 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-12-07 01:15:00,926 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2021-12-07 01:15:00,926 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331703871]
[2021-12-07 01:15:00,926 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:00,928 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:00,928 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:00,928 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:00,929 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-12-07 01:15:00,929 INFO  L87              Difference]: Start difference. First operand 77097 states and 86095 transitions. Second operand  has 3 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 3 states have internal predecessors, (1798), 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)
[2021-12-07 01:15:04,626 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:04,626 INFO  L93              Difference]: Finished difference Result 152501 states and 170489 transitions.
[2021-12-07 01:15:04,627 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:15:04,627 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 3 states have internal predecessors, (1798), 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 1902
[2021-12-07 01:15:04,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:04,694 INFO  L225             Difference]: With dead ends: 152501
[2021-12-07 01:15:04,694 INFO  L226             Difference]: Without dead ends: 77104
[2021-12-07 01:15:04,724 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 1906 GetRequests, 1901 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2021-12-07 01:15:04,725 INFO  L933         BasicCegarLoop]: 1174 mSDtfsCounter, 2227 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 5652 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 6641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 5652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:04,726 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2227 Valid, 1366 Invalid, 6641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 5652 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2021-12-07 01:15:04,781 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77104 states.
[2021-12-07 01:15:05,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77104 to 77096.
[2021-12-07 01:15:05,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77096 states, 77095 states have (on average 1.0978014138400674) internal successors, (84635), 77095 states have internal predecessors, (84635), 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)
[2021-12-07 01:15:05,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77096 states to 77096 states and 84635 transitions.
[2021-12-07 01:15:05,399 INFO  L78                 Accepts]: Start accepts. Automaton has 77096 states and 84635 transitions. Word has length 1902
[2021-12-07 01:15:05,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:05,400 INFO  L470      AbstractCegarLoop]: Abstraction has 77096 states and 84635 transitions.
[2021-12-07 01:15:05,400 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 3 states have internal predecessors, (1798), 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)
[2021-12-07 01:15:05,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 77096 states and 84635 transitions.
[2021-12-07 01:15:05,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1905
[2021-12-07 01:15:05,562 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:05,563 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:15:05,592 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-12-07 01:15:05,777 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8747cc60-6369-4985-973b-42cf12935068/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-07 01:15:05,779 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:05,780 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:05,782 INFO  L85        PathProgramCache]: Analyzing trace with hash -36014566, now seen corresponding path program 1 times
[2021-12-07 01:15:05,782 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:05,782 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83486868]
[2021-12-07 01:15:05,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:05,783 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:05,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:06,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 382 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2021-12-07 01:15:06,401 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:06,401 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83486868]
[2021-12-07 01:15:06,401 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83486868] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:06,401 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:06,402 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:15:06,402 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145276696]
[2021-12-07 01:15:06,402 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:06,405 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:06,405 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:06,405 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:06,405 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:06,406 INFO  L87              Difference]: Start difference. First operand 77096 states and 84635 transitions. Second operand  has 3 states, 3 states have (on average 626.0) internal successors, (1878), 3 states have internal predecessors, (1878), 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)
[2021-12-07 01:15:10,367 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:10,368 INFO  L93              Difference]: Finished difference Result 176269 states and 195142 transitions.
[2021-12-07 01:15:10,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:15:10,368 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 626.0) internal successors, (1878), 3 states have internal predecessors, (1878), 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 1904
[2021-12-07 01:15:10,369 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:10,469 INFO  L225             Difference]: With dead ends: 176269
[2021-12-07 01:15:10,470 INFO  L226             Difference]: Without dead ends: 100873
[2021-12-07 01:15:10,506 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:10,506 INFO  L933         BasicCegarLoop]: 3872 mSDtfsCounter, 1723 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 5818 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 6721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 5818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:10,507 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 4261 Invalid, 6721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 5818 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2021-12-07 01:15:10,584 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100873 states.
[2021-12-07 01:15:11,372 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100873 to 100870.
[2021-12-07 01:15:11,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 100870 states, 100869 states have (on average 1.0891948963507123) internal successors, (109866), 100869 states have internal predecessors, (109866), 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)
[2021-12-07 01:15:11,557 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100870 states to 100870 states and 109866 transitions.
[2021-12-07 01:15:11,557 INFO  L78                 Accepts]: Start accepts. Automaton has 100870 states and 109866 transitions. Word has length 1904
[2021-12-07 01:15:11,557 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:11,558 INFO  L470      AbstractCegarLoop]: Abstraction has 100870 states and 109866 transitions.
[2021-12-07 01:15:11,558 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 626.0) internal successors, (1878), 3 states have internal predecessors, (1878), 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)
[2021-12-07 01:15:11,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 100870 states and 109866 transitions.
[2021-12-07 01:15:11,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1915
[2021-12-07 01:15:11,636 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:11,637 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-12-07 01:15:11,637 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-12-07 01:15:11,638 INFO  L402      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:11,638 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:11,638 INFO  L85        PathProgramCache]: Analyzing trace with hash -2046384426, now seen corresponding path program 1 times
[2021-12-07 01:15:11,638 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:11,639 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532132570]
[2021-12-07 01:15:11,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:11,639 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:11,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:12,352 INFO  L134       CoverageAnalysis]: Checked inductivity of 445 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2021-12-07 01:15:12,352 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:12,352 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532132570]
[2021-12-07 01:15:12,352 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532132570] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:12,353 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:12,353 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:15:12,353 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123925176]
[2021-12-07 01:15:12,353 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:12,354 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:12,355 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:12,355 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:12,355 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:12,355 INFO  L87              Difference]: Start difference. First operand 100870 states and 109866 transitions. Second operand  has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 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)
[2021-12-07 01:15:16,830 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:16,830 INFO  L93              Difference]: Finished difference Result 239172 states and 262339 transitions.
[2021-12-07 01:15:16,830 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:15:16,830 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 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 1914
[2021-12-07 01:15:16,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:16,997 INFO  L225             Difference]: With dead ends: 239172
[2021-12-07 01:15:16,997 INFO  L226             Difference]: Without dead ends: 140002
[2021-12-07 01:15:17,018 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:17,019 INFO  L933         BasicCegarLoop]: 3780 mSDtfsCounter, 1799 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 6085 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 7221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 6085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:17,019 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 4004 Invalid, 7221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 6085 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2021-12-07 01:15:17,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140002 states.
[2021-12-07 01:15:18,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140002 to 139932.
[2021-12-07 01:15:18,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 139932 states, 139931 states have (on average 1.0790746868099277) internal successors, (150996), 139931 states have internal predecessors, (150996), 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)
[2021-12-07 01:15:18,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139932 states to 139932 states and 150996 transitions.
[2021-12-07 01:15:18,469 INFO  L78                 Accepts]: Start accepts. Automaton has 139932 states and 150996 transitions. Word has length 1914
[2021-12-07 01:15:18,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:18,470 INFO  L470      AbstractCegarLoop]: Abstraction has 139932 states and 150996 transitions.
[2021-12-07 01:15:18,470 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 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)
[2021-12-07 01:15:18,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 139932 states and 150996 transitions.
[2021-12-07 01:15:18,770 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1948
[2021-12-07 01:15:18,770 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:18,772 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:15:18,772 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-12-07 01:15:18,772 INFO  L402      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:18,773 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:18,773 INFO  L85        PathProgramCache]: Analyzing trace with hash -783719192, now seen corresponding path program 1 times
[2021-12-07 01:15:18,774 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:18,774 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019576295]
[2021-12-07 01:15:18,774 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:18,774 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:18,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:19,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 388 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked.
[2021-12-07 01:15:19,420 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:19,420 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019576295]
[2021-12-07 01:15:19,420 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019576295] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:19,420 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:19,420 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-12-07 01:15:19,420 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347334304]
[2021-12-07 01:15:19,420 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:19,422 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-12-07 01:15:19,422 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:19,422 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-12-07 01:15:19,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-07 01:15:19,423 INFO  L87              Difference]: Start difference. First operand 139932 states and 150996 transitions. Second operand  has 5 states, 5 states have (on average 380.8) internal successors, (1904), 5 states have internal predecessors, (1904), 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)
[2021-12-07 01:15:24,826 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:24,826 INFO  L93              Difference]: Finished difference Result 302284 states and 326105 transitions.
[2021-12-07 01:15:24,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-12-07 01:15:24,826 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 380.8) internal successors, (1904), 5 states have internal predecessors, (1904), 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 1947
[2021-12-07 01:15:24,827 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:24,973 INFO  L225             Difference]: With dead ends: 302284
[2021-12-07 01:15:24,973 INFO  L226             Difference]: Without dead ends: 164052
[2021-12-07 01:15:25,018 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-12-07 01:15:25,019 INFO  L933         BasicCegarLoop]: 3923 mSDtfsCounter, 3527 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 8406 mSolverCounterSat, 2284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 10690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2284 IncrementalHoareTripleChecker+Valid, 8406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:25,019 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3527 Valid, 4399 Invalid, 10690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2284 Valid, 8406 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2021-12-07 01:15:25,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 164052 states.
[2021-12-07 01:15:26,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 164052 to 163704.
[2021-12-07 01:15:26,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163704 states, 163703 states have (on average 1.0694550496936526) internal successors, (175073), 163703 states have internal predecessors, (175073), 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)
[2021-12-07 01:15:26,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163704 states to 163704 states and 175073 transitions.
[2021-12-07 01:15:26,713 INFO  L78                 Accepts]: Start accepts. Automaton has 163704 states and 175073 transitions. Word has length 1947
[2021-12-07 01:15:26,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:26,714 INFO  L470      AbstractCegarLoop]: Abstraction has 163704 states and 175073 transitions.
[2021-12-07 01:15:26,714 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 380.8) internal successors, (1904), 5 states have internal predecessors, (1904), 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)
[2021-12-07 01:15:26,715 INFO  L276                IsEmpty]: Start isEmpty. Operand 163704 states and 175073 transitions.
[2021-12-07 01:15:26,894 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1991
[2021-12-07 01:15:26,894 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:26,896 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:15:26,896 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2021-12-07 01:15:26,896 INFO  L402      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:26,896 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:26,897 INFO  L85        PathProgramCache]: Analyzing trace with hash 1034993058, now seen corresponding path program 1 times
[2021-12-07 01:15:26,897 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:26,897 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227836361]
[2021-12-07 01:15:26,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:26,897 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:27,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:27,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 560 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2021-12-07 01:15:27,820 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:27,820 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227836361]
[2021-12-07 01:15:27,820 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227836361] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:27,821 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:27,821 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:15:27,821 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522821366]
[2021-12-07 01:15:27,821 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:27,822 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:27,822 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:27,823 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:27,823 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:27,823 INFO  L87              Difference]: Start difference. First operand 163704 states and 175073 transitions. Second operand  has 3 states, 3 states have (on average 644.6666666666666) internal successors, (1934), 3 states have internal predecessors, (1934), 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)
[2021-12-07 01:15:32,847 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:32,847 INFO  L93              Difference]: Finished difference Result 408928 states and 439884 transitions.
[2021-12-07 01:15:32,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:15:32,847 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 644.6666666666666) internal successors, (1934), 3 states have internal predecessors, (1934), 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 1990
[2021-12-07 01:15:32,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:33,189 INFO  L225             Difference]: With dead ends: 408928
[2021-12-07 01:15:33,189 INFO  L226             Difference]: Without dead ends: 246924
[2021-12-07 01:15:33,248 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:33,249 INFO  L933         BasicCegarLoop]: 929 mSDtfsCounter, 2177 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 5101 mSolverCounterSat, 2651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 7752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2651 IncrementalHoareTripleChecker+Valid, 5101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:33,249 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2177 Valid, 1027 Invalid, 7752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2651 Valid, 5101 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2021-12-07 01:15:33,406 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 246924 states.
[2021-12-07 01:15:35,410 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 246924 to 246902.
[2021-12-07 01:15:35,545 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 246902 states, 246901 states have (on average 1.0737137557158538) internal successors, (265101), 246901 states have internal predecessors, (265101), 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)
[2021-12-07 01:15:35,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 246902 states to 246902 states and 265101 transitions.
[2021-12-07 01:15:35,851 INFO  L78                 Accepts]: Start accepts. Automaton has 246902 states and 265101 transitions. Word has length 1990
[2021-12-07 01:15:35,852 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:35,852 INFO  L470      AbstractCegarLoop]: Abstraction has 246902 states and 265101 transitions.
[2021-12-07 01:15:35,852 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 644.6666666666666) internal successors, (1934), 3 states have internal predecessors, (1934), 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)
[2021-12-07 01:15:35,852 INFO  L276                IsEmpty]: Start isEmpty. Operand 246902 states and 265101 transitions.
[2021-12-07 01:15:36,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2310
[2021-12-07 01:15:36,185 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:36,186 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:15:36,186 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2021-12-07 01:15:36,186 INFO  L402      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:36,187 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:36,187 INFO  L85        PathProgramCache]: Analyzing trace with hash 2113880722, now seen corresponding path program 1 times
[2021-12-07 01:15:36,187 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:36,187 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027699704]
[2021-12-07 01:15:36,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:36,188 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:36,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:37,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 1152 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2021-12-07 01:15:37,169 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:37,169 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027699704]
[2021-12-07 01:15:37,169 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027699704] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:37,169 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:37,169 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:15:37,169 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815058286]
[2021-12-07 01:15:37,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:37,171 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:37,172 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:37,172 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:37,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:37,172 INFO  L87              Difference]: Start difference. First operand 246902 states and 265101 transitions. Second operand  has 3 states, 3 states have (on average 662.3333333333334) internal successors, (1987), 3 states have internal predecessors, (1987), 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)
[2021-12-07 01:15:42,290 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:42,290 INFO  L93              Difference]: Finished difference Result 594002 states and 638157 transitions.
[2021-12-07 01:15:42,290 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:15:42,291 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 662.3333333333334) internal successors, (1987), 3 states have internal predecessors, (1987), 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 2309
[2021-12-07 01:15:42,291 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:42,760 INFO  L225             Difference]: With dead ends: 594002
[2021-12-07 01:15:42,760 INFO  L226             Difference]: Without dead ends: 348800
[2021-12-07 01:15:42,826 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:42,826 INFO  L933         BasicCegarLoop]: 2096 mSDtfsCounter, 1632 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 6915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 5634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:42,826 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1632 Valid, 2342 Invalid, 6915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2021-12-07 01:15:43,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 348800 states.
[2021-12-07 01:15:45,904 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 348800 to 347085.
[2021-12-07 01:15:46,008 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 347085 states, 347084 states have (on average 1.0580983277823235) internal successors, (367249), 347084 states have internal predecessors, (367249), 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)
[2021-12-07 01:15:46,539 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 347085 states to 347085 states and 367249 transitions.
[2021-12-07 01:15:46,539 INFO  L78                 Accepts]: Start accepts. Automaton has 347085 states and 367249 transitions. Word has length 2309
[2021-12-07 01:15:46,540 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:46,540 INFO  L470      AbstractCegarLoop]: Abstraction has 347085 states and 367249 transitions.
[2021-12-07 01:15:46,540 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 662.3333333333334) internal successors, (1987), 3 states have internal predecessors, (1987), 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)
[2021-12-07 01:15:46,540 INFO  L276                IsEmpty]: Start isEmpty. Operand 347085 states and 367249 transitions.
[2021-12-07 01:15:46,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2329
[2021-12-07 01:15:46,910 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:46,911 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:15:46,911 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2021-12-07 01:15:46,912 INFO  L402      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:46,912 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:46,912 INFO  L85        PathProgramCache]: Analyzing trace with hash 1192935117, now seen corresponding path program 1 times
[2021-12-07 01:15:46,912 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:46,913 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87467636]
[2021-12-07 01:15:46,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:46,913 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:47,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:47,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 1202 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked.
[2021-12-07 01:15:47,781 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:47,781 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87467636]
[2021-12-07 01:15:47,781 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87467636] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:47,781 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:47,781 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-07 01:15:47,781 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581931863]
[2021-12-07 01:15:47,781 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:47,783 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:47,783 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:47,783 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:47,783 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:47,784 INFO  L87              Difference]: Start difference. First operand 347085 states and 367249 transitions. Second operand  has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 2 states have internal predecessors, (1892), 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)
[2021-12-07 01:15:52,975 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:15:52,975 INFO  L93              Difference]: Finished difference Result 680478 states and 720026 transitions.
[2021-12-07 01:15:52,975 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:15:52,976 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 2 states have internal predecessors, (1892), 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 2328
[2021-12-07 01:15:52,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:15:53,340 INFO  L225             Difference]: With dead ends: 680478
[2021-12-07 01:15:53,340 INFO  L226             Difference]: Without dead ends: 324876
[2021-12-07 01:15:53,454 INFO  L932         BasicCegarLoop]: 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
[2021-12-07 01:15:53,454 INFO  L933         BasicCegarLoop]: 1489 mSDtfsCounter, 2470 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4466 mSolverCounterSat, 1684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 6150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1684 IncrementalHoareTripleChecker+Valid, 4466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2021-12-07 01:15:53,455 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2470 Valid, 1623 Invalid, 6150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1684 Valid, 4466 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2021-12-07 01:15:53,707 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 324876 states.
[2021-12-07 01:15:56,053 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 324876 to 299402.
[2021-12-07 01:15:56,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 299402 states, 299401 states have (on average 1.0397426862301729) internal successors, (311300), 299401 states have internal predecessors, (311300), 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)
[2021-12-07 01:15:56,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 299402 states to 299402 states and 311300 transitions.
[2021-12-07 01:15:56,672 INFO  L78                 Accepts]: Start accepts. Automaton has 299402 states and 311300 transitions. Word has length 2328
[2021-12-07 01:15:56,672 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:15:56,672 INFO  L470      AbstractCegarLoop]: Abstraction has 299402 states and 311300 transitions.
[2021-12-07 01:15:56,673 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 630.6666666666666) internal successors, (1892), 2 states have internal predecessors, (1892), 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)
[2021-12-07 01:15:56,673 INFO  L276                IsEmpty]: Start isEmpty. Operand 299402 states and 311300 transitions.
[2021-12-07 01:15:56,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2444
[2021-12-07 01:15:56,896 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:15:56,898 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2021-12-07 01:15:56,898 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2021-12-07 01:15:56,898 INFO  L402      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:15:56,898 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:15:56,899 INFO  L85        PathProgramCache]: Analyzing trace with hash 563719169, now seen corresponding path program 1 times
[2021-12-07 01:15:56,899 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:15:56,899 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833876850]
[2021-12-07 01:15:56,899 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:15:56,899 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:15:57,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:15:58,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 1270 backedges. 980 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2021-12-07 01:15:58,012 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:15:58,012 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833876850]
[2021-12-07 01:15:58,013 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833876850] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:15:58,013 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:15:58,013 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:15:58,013 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547437554]
[2021-12-07 01:15:58,013 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:15:58,015 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:15:58,015 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:15:58,016 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:15:58,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:15:58,016 INFO  L87              Difference]: Start difference. First operand 299402 states and 311300 transitions. Second operand  has 3 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 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)
[2021-12-07 01:16:03,134 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:16:03,135 INFO  L93              Difference]: Finished difference Result 671835 states and 699739 transitions.
[2021-12-07 01:16:03,135 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:16:03,135 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 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 2443
[2021-12-07 01:16:03,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:16:03,495 INFO  L225             Difference]: With dead ends: 671835
[2021-12-07 01:16:03,495 INFO  L226             Difference]: Without dead ends: 372434
[2021-12-07 01:16:03,564 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:16:03,565 INFO  L933         BasicCegarLoop]: 3756 mSDtfsCounter, 1423 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 5630 mSolverCounterSat, 1187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 6817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 5630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2021-12-07 01:16:03,565 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 4001 Invalid, 6817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 5630 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2021-12-07 01:16:03,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 372434 states.
[2021-12-07 01:16:06,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 372434 to 370717.
[2021-12-07 01:16:06,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 370717 states, 370716 states have (on average 1.0353720907648982) internal successors, (383829), 370716 states have internal predecessors, (383829), 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)
[2021-12-07 01:16:07,511 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 370717 states to 370717 states and 383829 transitions.
[2021-12-07 01:16:07,511 INFO  L78                 Accepts]: Start accepts. Automaton has 370717 states and 383829 transitions. Word has length 2443
[2021-12-07 01:16:07,512 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:16:07,512 INFO  L470      AbstractCegarLoop]: Abstraction has 370717 states and 383829 transitions.
[2021-12-07 01:16:07,513 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 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)
[2021-12-07 01:16:07,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 370717 states and 383829 transitions.
[2021-12-07 01:16:07,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2486
[2021-12-07 01:16:07,851 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:16:07,853 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:16:07,853 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2021-12-07 01:16:07,853 INFO  L402      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:16:07,853 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:16:07,854 INFO  L85        PathProgramCache]: Analyzing trace with hash 928531182, now seen corresponding path program 1 times
[2021-12-07 01:16:07,854 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:16:07,854 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040944954]
[2021-12-07 01:16:07,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:16:07,855 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:16:08,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:16:08,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 1586 backedges. 1173 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked.
[2021-12-07 01:16:08,929 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:16:08,929 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040944954]
[2021-12-07 01:16:08,929 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040944954] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:16:08,929 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:16:08,929 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:16:08,929 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206472911]
[2021-12-07 01:16:08,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:16:08,931 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:16:08,931 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:16:08,931 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:16:08,931 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:16:08,932 INFO  L87              Difference]: Start difference. First operand 370717 states and 383829 transitions. Second operand  has 3 states, 3 states have (on average 706.3333333333334) internal successors, (2119), 3 states have internal predecessors, (2119), 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)
[2021-12-07 01:16:13,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:16:13,863 INFO  L93              Difference]: Finished difference Result 756720 states and 783088 transitions.
[2021-12-07 01:16:13,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:16:13,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 706.3333333333334) internal successors, (2119), 3 states have internal predecessors, (2119), 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 2485
[2021-12-07 01:16:13,865 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:16:14,279 INFO  L225             Difference]: With dead ends: 756720
[2021-12-07 01:16:14,279 INFO  L226             Difference]: Without dead ends: 375793
[2021-12-07 01:16:14,405 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:16:14,405 INFO  L933         BasicCegarLoop]: 2801 mSDtfsCounter, 2159 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2159 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2021-12-07 01:16:14,406 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2159 Valid, 2900 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1500 Valid, 4807 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2021-12-07 01:16:14,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 375793 states.
[2021-12-07 01:16:17,644 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 375793 to 367294.
[2021-12-07 01:16:17,815 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 367294 states, 367293 states have (on average 1.0272888402447093) internal successors, (377316), 367293 states have internal predecessors, (377316), 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)
[2021-12-07 01:16:18,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 367294 states to 367294 states and 377316 transitions.
[2021-12-07 01:16:18,390 INFO  L78                 Accepts]: Start accepts. Automaton has 367294 states and 377316 transitions. Word has length 2485
[2021-12-07 01:16:18,390 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:16:18,390 INFO  L470      AbstractCegarLoop]: Abstraction has 367294 states and 377316 transitions.
[2021-12-07 01:16:18,391 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 706.3333333333334) internal successors, (2119), 3 states have internal predecessors, (2119), 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)
[2021-12-07 01:16:18,391 INFO  L276                IsEmpty]: Start isEmpty. Operand 367294 states and 377316 transitions.
[2021-12-07 01:16:18,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3002
[2021-12-07 01:16:18,886 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:16:18,888 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:16:18,888 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2021-12-07 01:16:18,888 INFO  L402      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:16:18,889 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:16:18,889 INFO  L85        PathProgramCache]: Analyzing trace with hash 1980778181, now seen corresponding path program 1 times
[2021-12-07 01:16:18,889 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:16:18,890 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049048475]
[2021-12-07 01:16:18,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:16:18,890 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:16:19,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:16:20,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 1919 backedges. 1117 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked.
[2021-12-07 01:16:20,121 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:16:20,121 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049048475]
[2021-12-07 01:16:20,121 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049048475] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:16:20,122 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:16:20,122 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:16:20,122 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5594478]
[2021-12-07 01:16:20,122 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:16:20,124 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:16:20,124 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:16:20,124 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:16:20,124 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:16:20,125 INFO  L87              Difference]: Start difference. First operand 367294 states and 377316 transitions. Second operand  has 4 states, 4 states have (on average 550.0) internal successors, (2200), 3 states have internal predecessors, (2200), 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)
[2021-12-07 01:16:26,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:16:26,675 INFO  L93              Difference]: Finished difference Result 738007 states and 758069 transitions.
[2021-12-07 01:16:26,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:16:26,675 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 550.0) internal successors, (2200), 3 states have internal predecessors, (2200), 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 3001
[2021-12-07 01:16:26,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:16:27,079 INFO  L225             Difference]: With dead ends: 738007
[2021-12-07 01:16:27,079 INFO  L226             Difference]: Without dead ends: 370699
[2021-12-07 01:16:27,368 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:16:27,368 INFO  L933         BasicCegarLoop]: 937 mSDtfsCounter, 4473 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 9273 mSolverCounterSat, 1827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 11100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1827 IncrementalHoareTripleChecker+Valid, 9273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2021-12-07 01:16:27,368 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 1202 Invalid, 11100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1827 Valid, 9273 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2021-12-07 01:16:27,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 370699 states.
[2021-12-07 01:16:30,461 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 370699 to 367279.
[2021-12-07 01:16:30,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 367279 states, 367278 states have (on average 1.0142643991744673) internal successors, (372517), 367278 states have internal predecessors, (372517), 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)
[2021-12-07 01:16:31,209 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 367279 states to 367279 states and 372517 transitions.
[2021-12-07 01:16:31,210 INFO  L78                 Accepts]: Start accepts. Automaton has 367279 states and 372517 transitions. Word has length 3001
[2021-12-07 01:16:31,210 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:16:31,210 INFO  L470      AbstractCegarLoop]: Abstraction has 367279 states and 372517 transitions.
[2021-12-07 01:16:31,211 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 550.0) internal successors, (2200), 3 states have internal predecessors, (2200), 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)
[2021-12-07 01:16:31,211 INFO  L276                IsEmpty]: Start isEmpty. Operand 367279 states and 372517 transitions.
[2021-12-07 01:16:31,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3206
[2021-12-07 01:16:31,494 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:16:31,496 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:16:31,496 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2021-12-07 01:16:31,496 INFO  L402      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:16:31,496 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:16:31,497 INFO  L85        PathProgramCache]: Analyzing trace with hash -1815104829, now seen corresponding path program 1 times
[2021-12-07 01:16:31,497 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:16:31,497 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20262645]
[2021-12-07 01:16:31,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:16:31,497 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:16:31,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:16:33,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 2611 backedges. 2248 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked.
[2021-12-07 01:16:33,237 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:16:33,238 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20262645]
[2021-12-07 01:16:33,238 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20262645] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:16:33,238 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:16:33,238 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:16:33,238 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989761552]
[2021-12-07 01:16:33,238 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:16:33,240 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:16:33,240 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:16:33,241 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:16:33,241 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:16:33,241 INFO  L87              Difference]: Start difference. First operand 367279 states and 372517 transitions. Second operand  has 3 states, 3 states have (on average 953.6666666666666) internal successors, (2861), 3 states have internal predecessors, (2861), 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)
[2021-12-07 01:16:37,521 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:16:37,522 INFO  L93              Difference]: Finished difference Result 732850 states and 743318 transitions.
[2021-12-07 01:16:37,522 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:16:37,523 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 953.6666666666666) internal successors, (2861), 3 states have internal predecessors, (2861), 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 3205
[2021-12-07 01:16:37,524 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:16:37,911 INFO  L225             Difference]: With dead ends: 732850
[2021-12-07 01:16:37,912 INFO  L226             Difference]: Without dead ends: 367271
[2021-12-07 01:16:38,025 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:16:38,026 INFO  L933         BasicCegarLoop]: 2881 mSDtfsCounter, 1168 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4161 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 4774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 4161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time
[2021-12-07 01:16:38,026 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 3175 Invalid, 4774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 4161 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time]
[2021-12-07 01:16:38,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 367271 states.
[2021-12-07 01:16:41,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 367271 to 363873.
[2021-12-07 01:16:41,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 363873 states, 363872 states have (on average 1.0106548456600124) internal successors, (367749), 363872 states have internal predecessors, (367749), 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)
[2021-12-07 01:16:41,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 363873 states to 363873 states and 367749 transitions.
[2021-12-07 01:16:41,881 INFO  L78                 Accepts]: Start accepts. Automaton has 363873 states and 367749 transitions. Word has length 3205
[2021-12-07 01:16:42,070 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:16:42,070 INFO  L470      AbstractCegarLoop]: Abstraction has 363873 states and 367749 transitions.
[2021-12-07 01:16:42,071 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 953.6666666666666) internal successors, (2861), 3 states have internal predecessors, (2861), 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)
[2021-12-07 01:16:42,071 INFO  L276                IsEmpty]: Start isEmpty. Operand 363873 states and 367749 transitions.
[2021-12-07 01:16:42,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3640
[2021-12-07 01:16:42,396 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:16:42,397 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:16:42,397 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2021-12-07 01:16:42,398 INFO  L402      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:16:42,398 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:16:42,399 INFO  L85        PathProgramCache]: Analyzing trace with hash -2099006079, now seen corresponding path program 1 times
[2021-12-07 01:16:42,399 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:16:42,399 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75797862]
[2021-12-07 01:16:42,399 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:16:42,399 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:16:42,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:16:44,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 4057 backedges. 2910 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked.
[2021-12-07 01:16:44,479 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:16:44,479 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75797862]
[2021-12-07 01:16:44,479 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75797862] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:16:44,479 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:16:44,480 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:16:44,480 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250902843]
[2021-12-07 01:16:44,480 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:16:44,482 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:16:44,482 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:16:44,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:16:44,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:16:44,483 INFO  L87              Difference]: Start difference. First operand 363873 states and 367749 transitions. Second operand  has 4 states, 4 states have (on average 675.0) internal successors, (2700), 3 states have internal predecessors, (2700), 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)
[2021-12-07 01:16:50,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:16:50,770 INFO  L93              Difference]: Finished difference Result 788881 states and 797449 transitions.
[2021-12-07 01:16:50,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:16:50,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 675.0) internal successors, (2700), 3 states have internal predecessors, (2700), 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 3639
[2021-12-07 01:16:50,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:16:51,251 INFO  L225             Difference]: With dead ends: 788881
[2021-12-07 01:16:51,251 INFO  L226             Difference]: Without dead ends: 418192
[2021-12-07 01:16:51,387 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:16:51,388 INFO  L933         BasicCegarLoop]: 858 mSDtfsCounter, 3124 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 8597 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3124 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 9499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 8597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2021-12-07 01:16:51,388 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3124 Valid, 1137 Invalid, 9499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 8597 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2021-12-07 01:16:51,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 418192 states.
[2021-12-07 01:16:55,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 418192 to 416485.
[2021-12-07 01:16:55,280 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 416485 states, 416484 states have (on average 1.0095201736441255) internal successors, (420449), 416484 states have internal predecessors, (420449), 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)
[2021-12-07 01:16:55,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 416485 states to 416485 states and 420449 transitions.
[2021-12-07 01:16:55,992 INFO  L78                 Accepts]: Start accepts. Automaton has 416485 states and 420449 transitions. Word has length 3639
[2021-12-07 01:16:55,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:16:55,993 INFO  L470      AbstractCegarLoop]: Abstraction has 416485 states and 420449 transitions.
[2021-12-07 01:16:55,994 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 675.0) internal successors, (2700), 3 states have internal predecessors, (2700), 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)
[2021-12-07 01:16:55,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 416485 states and 420449 transitions.
[2021-12-07 01:16:56,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3670
[2021-12-07 01:16:56,431 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:16:56,433 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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[2021-12-07 01:16:56,433 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2021-12-07 01:16:56,433 INFO  L402      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:16:56,433 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:16:56,434 INFO  L85        PathProgramCache]: Analyzing trace with hash -199745389, now seen corresponding path program 1 times
[2021-12-07 01:16:56,434 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:16:56,434 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973545861]
[2021-12-07 01:16:56,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:16:56,434 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:16:56,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:16:58,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 4147 backedges. 3000 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked.
[2021-12-07 01:16:58,520 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:16:58,520 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973545861]
[2021-12-07 01:16:58,520 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973545861] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:16:58,520 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:16:58,521 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:16:58,521 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482939306]
[2021-12-07 01:16:58,521 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:16:58,523 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:16:58,523 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:16:58,523 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:16:58,523 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:16:58,524 INFO  L87              Difference]: Start difference. First operand 416485 states and 420449 transitions. Second operand  has 4 states, 4 states have (on average 682.5) internal successors, (2730), 3 states have internal predecessors, (2730), 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)
[2021-12-07 01:17:04,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:17:04,267 INFO  L93              Difference]: Finished difference Result 846554 states and 854593 transitions.
[2021-12-07 01:17:04,267 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:17:04,268 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 682.5) internal successors, (2730), 3 states have internal predecessors, (2730), 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 3669
[2021-12-07 01:17:04,269 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:17:04,747 INFO  L225             Difference]: With dead ends: 846554
[2021-12-07 01:17:04,747 INFO  L226             Difference]: Without dead ends: 430051
[2021-12-07 01:17:04,896 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:17:04,897 INFO  L933         BasicCegarLoop]: 808 mSDtfsCounter, 3312 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 8038 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 8859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 8038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2021-12-07 01:17:04,897 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3312 Valid, 1026 Invalid, 8859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 8038 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2021-12-07 01:17:05,263 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 430051 states.
[2021-12-07 01:17:08,668 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 430051 to 419862.
[2021-12-07 01:17:08,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 419862 states, 419861 states have (on average 1.0092411536198884) internal successors, (423741), 419861 states have internal predecessors, (423741), 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)
[2021-12-07 01:17:09,525 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 419862 states to 419862 states and 423741 transitions.
[2021-12-07 01:17:09,525 INFO  L78                 Accepts]: Start accepts. Automaton has 419862 states and 423741 transitions. Word has length 3669
[2021-12-07 01:17:09,526 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:17:09,526 INFO  L470      AbstractCegarLoop]: Abstraction has 419862 states and 423741 transitions.
[2021-12-07 01:17:09,527 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 682.5) internal successors, (2730), 3 states have internal predecessors, (2730), 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)
[2021-12-07 01:17:09,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 419862 states and 423741 transitions.
[2021-12-07 01:17:09,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3780
[2021-12-07 01:17:09,870 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:17:09,872 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:17:09,872 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2021-12-07 01:17:09,872 INFO  L402      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:17:09,873 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:17:09,873 INFO  L85        PathProgramCache]: Analyzing trace with hash -1196620189, now seen corresponding path program 1 times
[2021-12-07 01:17:09,873 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:17:09,873 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444522014]
[2021-12-07 01:17:09,874 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:17:09,874 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:17:10,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:17:11,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 4696 backedges. 2249 proven. 0 refuted. 0 times theorem prover too weak. 2447 trivial. 0 not checked.
[2021-12-07 01:17:11,952 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:17:11,952 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444522014]
[2021-12-07 01:17:11,952 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444522014] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:17:11,952 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:17:11,952 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:17:11,953 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298293871]
[2021-12-07 01:17:11,953 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:17:11,955 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:17:11,955 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:17:11,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:17:11,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:17:11,955 INFO  L87              Difference]: Start difference. First operand 419862 states and 423741 transitions. Second operand  has 3 states, 3 states have (on average 764.6666666666666) internal successors, (2294), 3 states have internal predecessors, (2294), 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)
[2021-12-07 01:17:16,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:17:16,874 INFO  L93              Difference]: Finished difference Result 853315 states and 861461 transitions.
[2021-12-07 01:17:16,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:17:16,875 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 764.6666666666666) internal successors, (2294), 3 states have internal predecessors, (2294), 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 3779
[2021-12-07 01:17:16,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:17:17,379 INFO  L225             Difference]: With dead ends: 853315
[2021-12-07 01:17:17,379 INFO  L226             Difference]: Without dead ends: 431753
[2021-12-07 01:17:17,510 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:17:17,510 INFO  L933         BasicCegarLoop]: 2954 mSDtfsCounter, 1602 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4468 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 4468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2021-12-07 01:17:17,511 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 3145 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 4468 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2021-12-07 01:17:17,878 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 431753 states.
[2021-12-07 01:17:21,267 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 431753 to 428351.
[2021-12-07 01:17:21,415 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 428351 states, 428350 states have (on average 1.0088595774483484) internal successors, (432145), 428350 states have internal predecessors, (432145), 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)
[2021-12-07 01:17:21,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 428351 states to 428351 states and 432145 transitions.
[2021-12-07 01:17:21,929 INFO  L78                 Accepts]: Start accepts. Automaton has 428351 states and 432145 transitions. Word has length 3779
[2021-12-07 01:17:21,930 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:17:21,930 INFO  L470      AbstractCegarLoop]: Abstraction has 428351 states and 432145 transitions.
[2021-12-07 01:17:21,931 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 764.6666666666666) internal successors, (2294), 3 states have internal predecessors, (2294), 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)
[2021-12-07 01:17:21,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 428351 states and 432145 transitions.
[2021-12-07 01:17:22,523 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3966
[2021-12-07 01:17:22,523 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:17:22,525 INFO  L514         BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:17:22,525 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2021-12-07 01:17:22,525 INFO  L402      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:17:22,526 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:17:22,526 INFO  L85        PathProgramCache]: Analyzing trace with hash 1538434496, now seen corresponding path program 1 times
[2021-12-07 01:17:22,526 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:17:22,526 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182111360]
[2021-12-07 01:17:22,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:17:22,527 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:17:22,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:17:24,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 6826 backedges. 2517 proven. 0 refuted. 0 times theorem prover too weak. 4309 trivial. 0 not checked.
[2021-12-07 01:17:24,640 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:17:24,640 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182111360]
[2021-12-07 01:17:24,640 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182111360] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:17:24,640 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:17:24,640 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:17:24,640 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135119566]
[2021-12-07 01:17:24,641 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:17:24,643 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-07 01:17:24,643 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:17:24,643 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-07 01:17:24,643 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:17:24,643 INFO  L87              Difference]: Start difference. First operand 428351 states and 432145 transitions. Second operand  has 3 states, 3 states have (on average 655.0) internal successors, (1965), 3 states have internal predecessors, (1965), 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)
[2021-12-07 01:17:29,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:17:29,582 INFO  L93              Difference]: Finished difference Result 873676 states and 881649 transitions.
[2021-12-07 01:17:29,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-12-07 01:17:29,583 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 655.0) internal successors, (1965), 3 states have internal predecessors, (1965), 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 3965
[2021-12-07 01:17:29,583 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:17:30,091 INFO  L225             Difference]: With dead ends: 873676
[2021-12-07 01:17:30,091 INFO  L226             Difference]: Without dead ends: 445315
[2021-12-07 01:17:30,440 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-07 01:17:30,441 INFO  L933         BasicCegarLoop]: 2824 mSDtfsCounter, 1754 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 4422 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2021-12-07 01:17:30,441 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1754 Valid, 3020 Invalid, 5080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 4422 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2021-12-07 01:17:30,745 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 445315 states.
[2021-12-07 01:17:34,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 445315 to 438513.
[2021-12-07 01:17:34,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 438513 states, 438512 states have (on average 1.0073042470901594) internal successors, (441715), 438512 states have internal predecessors, (441715), 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)
[2021-12-07 01:17:35,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 438513 states to 438513 states and 441715 transitions.
[2021-12-07 01:17:35,064 INFO  L78                 Accepts]: Start accepts. Automaton has 438513 states and 441715 transitions. Word has length 3965
[2021-12-07 01:17:35,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:17:35,064 INFO  L470      AbstractCegarLoop]: Abstraction has 438513 states and 441715 transitions.
[2021-12-07 01:17:35,065 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 655.0) internal successors, (1965), 3 states have internal predecessors, (1965), 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)
[2021-12-07 01:17:35,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 438513 states and 441715 transitions.
[2021-12-07 01:17:35,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4103
[2021-12-07 01:17:35,676 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:17:35,678 INFO  L514         BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-07 01:17:35,678 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2021-12-07 01:17:35,678 INFO  L402      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:17:35,678 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:17:35,679 INFO  L85        PathProgramCache]: Analyzing trace with hash -1646304480, now seen corresponding path program 1 times
[2021-12-07 01:17:35,679 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:17:35,679 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811559376]
[2021-12-07 01:17:35,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:17:35,680 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:17:36,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:17:38,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 7157 backedges. 5136 proven. 0 refuted. 0 times theorem prover too weak. 2021 trivial. 0 not checked.
[2021-12-07 01:17:38,178 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:17:38,178 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811559376]
[2021-12-07 01:17:38,178 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811559376] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:17:38,178 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:17:38,179 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:17:38,179 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114298265]
[2021-12-07 01:17:38,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:17:38,181 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:17:38,181 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:17:38,182 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:17:38,182 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:17:38,182 INFO  L87              Difference]: Start difference. First operand 438513 states and 441715 transitions. Second operand  has 4 states, 4 states have (on average 618.0) internal successors, (2472), 3 states have internal predecessors, (2472), 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)
[2021-12-07 01:17:44,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:17:44,256 INFO  L93              Difference]: Finished difference Result 902496 states and 909049 transitions.
[2021-12-07 01:17:44,257 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:17:44,257 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 618.0) internal successors, (2472), 3 states have internal predecessors, (2472), 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 4102
[2021-12-07 01:17:44,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:17:44,937 INFO  L225             Difference]: With dead ends: 902496
[2021-12-07 01:17:44,937 INFO  L226             Difference]: Without dead ends: 463975
[2021-12-07 01:17:45,049 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:17:45,050 INFO  L933         BasicCegarLoop]: 703 mSDtfsCounter, 3103 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 7902 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 8720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 7902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2021-12-07 01:17:45,050 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 893 Invalid, 8720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 7902 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2021-12-07 01:17:45,348 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 463975 states.
[2021-12-07 01:17:48,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 463975 to 440201.
[2021-12-07 01:17:49,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 440201 states, 440200 states have (on average 1.0071558382553385) internal successors, (443350), 440200 states have internal predecessors, (443350), 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)
[2021-12-07 01:17:49,727 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 440201 states to 440201 states and 443350 transitions.
[2021-12-07 01:17:49,727 INFO  L78                 Accepts]: Start accepts. Automaton has 440201 states and 443350 transitions. Word has length 4102
[2021-12-07 01:17:49,728 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-12-07 01:17:49,728 INFO  L470      AbstractCegarLoop]: Abstraction has 440201 states and 443350 transitions.
[2021-12-07 01:17:49,729 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 618.0) internal successors, (2472), 3 states have internal predecessors, (2472), 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)
[2021-12-07 01:17:49,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 440201 states and 443350 transitions.
[2021-12-07 01:17:50,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4207
[2021-12-07 01:17:50,412 INFO  L506         BasicCegarLoop]: Found error trace
[2021-12-07 01:17:50,414 INFO  L514         BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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[2021-12-07 01:17:50,414 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2021-12-07 01:17:50,414 INFO  L402      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-07 01:17:50,415 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-07 01:17:50,415 INFO  L85        PathProgramCache]: Analyzing trace with hash -741691156, now seen corresponding path program 1 times
[2021-12-07 01:17:50,416 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-07 01:17:50,416 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592792063]
[2021-12-07 01:17:50,416 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-07 01:17:50,416 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-07 01:17:50,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-07 01:17:52,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 7299 backedges. 5451 proven. 0 refuted. 0 times theorem prover too weak. 1848 trivial. 0 not checked.
[2021-12-07 01:17:52,917 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-07 01:17:52,917 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592792063]
[2021-12-07 01:17:52,917 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592792063] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-07 01:17:52,917 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-07 01:17:52,917 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-07 01:17:52,917 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066043826]
[2021-12-07 01:17:52,918 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-07 01:17:52,920 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-07 01:17:52,920 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-07 01:17:52,920 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-07 01:17:52,920 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:17:52,921 INFO  L87              Difference]: Start difference. First operand 440201 states and 443350 transitions. Second operand  has 4 states, 4 states have (on average 676.75) internal successors, (2707), 3 states have internal predecessors, (2707), 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)
[2021-12-07 01:17:58,566 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-07 01:17:58,567 INFO  L93              Difference]: Finished difference Result 910966 states and 917520 transitions.
[2021-12-07 01:17:58,567 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-12-07 01:17:58,567 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 676.75) internal successors, (2707), 3 states have internal predecessors, (2707), 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 4206
[2021-12-07 01:17:58,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-07 01:17:59,234 INFO  L225             Difference]: With dead ends: 910966
[2021-12-07 01:17:59,234 INFO  L226             Difference]: Without dead ends: 472465
[2021-12-07 01:17:59,333 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-07 01:17:59,333 INFO  L933         BasicCegarLoop]: 669 mSDtfsCounter, 3038 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 6206 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 6879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 6206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2021-12-07 01:17:59,334 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3038 Valid, 880 Invalid, 6879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 6206 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2021-12-07 01:17:59,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 472465 states.