./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label49.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 0f8a17c6
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL --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 ec47703dd9ca56b015ed04be692f36d14f45a0813c854d61b2b3eed727aa39e9
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-0f8a17c
[2021-11-19 04:51:23,831 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-19 04:51:23,833 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-19 04:51:23,891 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-19 04:51:23,895 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-19 04:51:23,901 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-19 04:51:23,909 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-19 04:51:23,911 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-19 04:51:23,914 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-19 04:51:23,916 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-19 04:51:23,917 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-19 04:51:23,919 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-19 04:51:23,920 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-19 04:51:23,921 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-19 04:51:23,923 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-19 04:51:23,925 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-19 04:51:23,927 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-19 04:51:23,930 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-19 04:51:23,935 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-19 04:51:23,941 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-19 04:51:23,943 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-19 04:51:23,946 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-19 04:51:23,948 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-19 04:51:23,949 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-19 04:51:23,954 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-19 04:51:23,954 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-19 04:51:23,955 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-19 04:51:23,956 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-19 04:51:23,957 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-19 04:51:23,959 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-19 04:51:23,959 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-19 04:51:23,961 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-19 04:51:23,962 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-19 04:51:23,963 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-19 04:51:23,965 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-19 04:51:23,966 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-19 04:51:23,967 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-19 04:51:23,967 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-19 04:51:23,968 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-19 04:51:23,970 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-19 04:51:23,971 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-19 04:51:23,972 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-19 04:51:23,999 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-19 04:51:23,999 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-19 04:51:24,000 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-19 04:51:24,000 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-19 04:51:24,001 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-19 04:51:24,001 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-19 04:51:24,002 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-19 04:51:24,002 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-19 04:51:24,003 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-19 04:51:24,003 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-19 04:51:24,003 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-19 04:51:24,003 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-19 04:51:24,004 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-19 04:51:24,004 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-19 04:51:24,004 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-19 04:51:24,005 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-19 04:51:24,005 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-19 04:51:24,005 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-19 04:51:24,005 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-19 04:51:24,006 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-19 04:51:24,006 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-19 04:51:24,006 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-19 04:51:24,006 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-19 04:51:24,007 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-19 04:51:24,007 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-19 04:51:24,007 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-19 04:51:24,008 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-19 04:51:24,008 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-19 04:51:24,008 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-19 04:51:24,008 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-19 04:51:24,009 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-19 04:51:24,009 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-19 04:51:24,009 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-19 04:51:24,010 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-19 04:51:24,010 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_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/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_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL
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 -> ec47703dd9ca56b015ed04be692f36d14f45a0813c854d61b2b3eed727aa39e9
[2021-11-19 04:51:24,269 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-19 04:51:24,293 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-19 04:51:24,297 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-19 04:51:24,298 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-19 04:51:24,299 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-19 04:51:24,301 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/eca-rers2012/Problem05_label49.c
[2021-11-19 04:51:24,385 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/data/b20a399b3/7ed81db1709f4cc189b029a8e813a6f7/FLAG1b1537f7b
[2021-11-19 04:51:25,576 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-19 04:51:25,578 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/sv-benchmarks/c/eca-rers2012/Problem05_label49.c
[2021-11-19 04:51:25,641 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/data/b20a399b3/7ed81db1709f4cc189b029a8e813a6f7/FLAG1b1537f7b
[2021-11-19 04:51:25,843 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/data/b20a399b3/7ed81db1709f4cc189b029a8e813a6f7
[2021-11-19 04:51:25,847 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-19 04:51:25,850 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-19 04:51:25,854 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-19 04:51:25,854 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-19 04:51:25,858 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-19 04:51:25,860 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:25" (1/1) ...
[2021-11-19 04:51:25,861 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13810265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:25, skipping insertion in model container
[2021-11-19 04:51:25,862 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:25" (1/1) ...
[2021-11-19 04:51:25,870 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-19 04:51:26,132 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-19 04:51:28,656 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_d14bf312-20c6-48ab-b297-6b2c9a41b389/sv-benchmarks/c/eca-rers2012/Problem05_label49.c[380250,380263]
[2021-11-19 04:51:28,688 INFO  L207          PostProcessor]: Analyzing one entry point: main
[2021-11-19 04:51:28,701 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-19 04:51:30,012 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_d14bf312-20c6-48ab-b297-6b2c9a41b389/sv-benchmarks/c/eca-rers2012/Problem05_label49.c[380250,380263]
[2021-11-19 04:51:30,025 INFO  L207          PostProcessor]: Analyzing one entry point: main
[2021-11-19 04:51:30,085 INFO  L208         MainTranslator]: Completed translation
[2021-11-19 04:51:30,085 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30 WrapperNode
[2021-11-19 04:51:30,085 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-19 04:51:30,086 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-19 04:51:30,087 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-19 04:51:30,087 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-19 04:51:30,095 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:30,208 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:30,656 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2021-11-19 04:51:30,656 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-19 04:51:30,658 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-19 04:51:30,658 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-19 04:51:30,658 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-19 04:51:30,668 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:30,668 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:30,736 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:30,736 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:31,003 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:31,162 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:31,188 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:31,314 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-19 04:51:31,315 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-19 04:51:31,315 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-19 04:51:31,316 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-19 04:51:31,333 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (1/1) ...
[2021-11-19 04:51:31,340 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-19 04:51:31,353 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/z3
[2021-11-19 04:51:31,406 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-19 04:51:31,461 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d14bf312-20c6-48ab-b297-6b2c9a41b389/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-19 04:51:31,541 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-19 04:51:31,542 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-19 04:51:31,542 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-19 04:51:31,542 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-19 04:51:31,713 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-19 04:51:31,715 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-19 04:51:39,506 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-19 04:51:39,541 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-19 04:51:39,541 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-19 04:51:39,549 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:39 BoogieIcfgContainer
[2021-11-19 04:51:39,549 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-19 04:51:39,555 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-19 04:51:39,555 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-19 04:51:39,559 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-19 04:51:39,559 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:25" (1/3) ...
[2021-11-19 04:51:39,560 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577c299a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:39, skipping insertion in model container
[2021-11-19 04:51:39,560 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:30" (2/3) ...
[2021-11-19 04:51:39,561 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577c299a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:39, skipping insertion in model container
[2021-11-19 04:51:39,561 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:39" (3/3) ...
[2021-11-19 04:51:39,563 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label49.c
[2021-11-19 04:51:39,569 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-19 04:51:39,570 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-19 04:51:39,658 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-19 04:51:39,668 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
[2021-11-19 04:51:39,669 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-19 04:51:39,735 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)
[2021-11-19 04:51:39,895 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1678
[2021-11-19 04:51:39,895 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:51:39,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 04:51:39,898 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:51:39,904 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:51:39,906 INFO  L85        PathProgramCache]: Analyzing trace with hash -2014411127, now seen corresponding path program 1 times
[2021-11-19 04:51:39,915 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:51:39,916 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706624139]
[2021-11-19 04:51:39,917 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:51:39,918 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:51:40,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:51:42,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 04:51:42,403 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:51:42,404 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706624139]
[2021-11-19 04:51:42,405 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706624139] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:51:42,405 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:51:42,406 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 04:51:42,408 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933586616]
[2021-11-19 04:51:42,408 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:51:42,418 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:51:42,419 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:51:42,456 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:51:42,458 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:51:42,468 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 3 states, 3 states have (on average 559.0) internal successors, (1677), 2 states have internal predecessors, (1677), 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)
[2021-11-19 04:51:50,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:51:50,607 INFO  L93              Difference]: Finished difference Result 6175 states and 11683 transitions.
[2021-11-19 04:51:50,609 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:51:50,612 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 559.0) internal successors, (1677), 2 states have internal predecessors, (1677), 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 1677
[2021-11-19 04:51:50,626 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:51:50,687 INFO  L225             Difference]: With dead ends: 6175
[2021-11-19 04:51:50,687 INFO  L226             Difference]: Without dead ends: 3926
[2021-11-19 04:51:50,700 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
[2021-11-19 04:51:50,705 INFO  L933         BasicCegarLoop]: 1246 mSDtfsCounter, 480 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 5698 mSolverCounterSat, 1714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 7412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1714 IncrementalHoareTripleChecker+Valid, 5698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2021-11-19 04:51:50,707 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1421 Invalid, 7412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1714 Valid, 5698 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2021-11-19 04:51:50,741 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3926 states.
[2021-11-19 04:51:50,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3906.
[2021-11-19 04:51:50,944 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3906 states, 3905 states have (on average 1.7426376440460947) internal successors, (6805), 3905 states have internal predecessors, (6805), 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)
[2021-11-19 04:51:50,964 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3906 states to 3906 states and 6805 transitions.
[2021-11-19 04:51:50,966 INFO  L78                 Accepts]: Start accepts. Automaton has 3906 states and 6805 transitions. Word has length 1677
[2021-11-19 04:51:50,972 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:51:50,972 INFO  L470      AbstractCegarLoop]: Abstraction has 3906 states and 6805 transitions.
[2021-11-19 04:51:50,973 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 559.0) internal successors, (1677), 2 states have internal predecessors, (1677), 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)
[2021-11-19 04:51:50,974 INFO  L276                IsEmpty]: Start isEmpty. Operand 3906 states and 6805 transitions.
[2021-11-19 04:51:51,055 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1683
[2021-11-19 04:51:51,056 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:51:51,057 INFO  L514         BasicCegarLoop]: trace histogram [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, 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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]
[2021-11-19 04:51:51,058 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-19 04:51:51,058 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:51:51,059 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:51:51,060 INFO  L85        PathProgramCache]: Analyzing trace with hash -1903148819, now seen corresponding path program 1 times
[2021-11-19 04:51:51,060 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:51:51,060 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184768773]
[2021-11-19 04:51:51,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:51:51,061 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:51:51,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:51:52,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 04:51:52,119 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:51:52,120 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184768773]
[2021-11-19 04:51:52,121 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184768773] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:51:52,121 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:51:52,121 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 04:51:52,122 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829918710]
[2021-11-19 04:51:52,122 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:51:52,127 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:51:52,128 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:51:52,129 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:51:52,129 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:51:52,132 INFO  L87              Difference]: Start difference. First operand 3906 states and 6805 transitions. Second operand  has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 2 states have internal predecessors, (1682), 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)
[2021-11-19 04:51:59,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:51:59,446 INFO  L93              Difference]: Finished difference Result 11354 states and 19932 transitions.
[2021-11-19 04:51:59,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:51:59,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 2 states have internal predecessors, (1682), 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 1682
[2021-11-19 04:51:59,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:51:59,500 INFO  L225             Difference]: With dead ends: 11354
[2021-11-19 04:51:59,500 INFO  L226             Difference]: Without dead ends: 7450
[2021-11-19 04:51:59,508 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
[2021-11-19 04:51:59,510 INFO  L933         BasicCegarLoop]: 1351 mSDtfsCounter, 1998 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 2353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 7597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2353 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time
[2021-11-19 04:51:59,511 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1998 Valid, 1573 Invalid, 7597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2353 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time]
[2021-11-19 04:51:59,524 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7450 states.
[2021-11-19 04:51:59,785 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 7366.
[2021-11-19 04:51:59,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7366 states, 7365 states have (on average 1.6093686354378818) internal successors, (11853), 7365 states have internal predecessors, (11853), 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)
[2021-11-19 04:51:59,829 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 11853 transitions.
[2021-11-19 04:51:59,830 INFO  L78                 Accepts]: Start accepts. Automaton has 7366 states and 11853 transitions. Word has length 1682
[2021-11-19 04:51:59,830 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:51:59,831 INFO  L470      AbstractCegarLoop]: Abstraction has 7366 states and 11853 transitions.
[2021-11-19 04:51:59,832 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 2 states have internal predecessors, (1682), 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)
[2021-11-19 04:51:59,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 7366 states and 11853 transitions.
[2021-11-19 04:51:59,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1685
[2021-11-19 04:51:59,875 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:51:59,876 INFO  L514         BasicCegarLoop]: trace histogram [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, 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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]
[2021-11-19 04:51:59,877 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-19 04:51:59,877 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:51:59,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:51:59,879 INFO  L85        PathProgramCache]: Analyzing trace with hash 991974930, now seen corresponding path program 1 times
[2021-11-19 04:51:59,880 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:51:59,880 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145546897]
[2021-11-19 04:51:59,881 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:51:59,881 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:00,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:01,915 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 04:52:01,916 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:01,916 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145546897]
[2021-11-19 04:52:01,916 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145546897] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:01,918 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:01,918 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 04:52:01,918 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167023323]
[2021-11-19 04:52:01,919 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:01,921 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-19 04:52:01,921 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:01,922 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-19 04:52:01,922 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-19 04:52:01,923 INFO  L87              Difference]: Start difference. First operand 7366 states and 11853 transitions. Second operand  has 4 states, 4 states have (on average 421.0) internal successors, (1684), 3 states have internal predecessors, (1684), 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)
[2021-11-19 04:52:11,938 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:52:11,938 INFO  L93              Difference]: Finished difference Result 23161 states and 37364 transitions.
[2021-11-19 04:52:11,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-19 04:52:11,939 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.0) internal successors, (1684), 3 states have internal predecessors, (1684), 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 1684
[2021-11-19 04:52:11,943 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:52:12,017 INFO  L225             Difference]: With dead ends: 23161
[2021-11-19 04:52:12,018 INFO  L226             Difference]: Without dead ends: 14145
[2021-11-19 04:52:12,030 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
[2021-11-19 04:52:12,032 INFO  L933         BasicCegarLoop]: 1038 mSDtfsCounter, 2411 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 9720 mSolverCounterSat, 3280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 13000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3280 IncrementalHoareTripleChecker+Valid, 9720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2021-11-19 04:52:12,033 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 1453 Invalid, 13000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3280 Valid, 9720 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2021-11-19 04:52:12,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14145 states.
[2021-11-19 04:52:12,301 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14145 to 14145.
[2021-11-19 04:52:12,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14145 states, 14144 states have (on average 1.2951074660633484) internal successors, (18318), 14144 states have internal predecessors, (18318), 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)
[2021-11-19 04:52:12,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14145 states to 14145 states and 18318 transitions.
[2021-11-19 04:52:12,374 INFO  L78                 Accepts]: Start accepts. Automaton has 14145 states and 18318 transitions. Word has length 1684
[2021-11-19 04:52:12,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:52:12,375 INFO  L470      AbstractCegarLoop]: Abstraction has 14145 states and 18318 transitions.
[2021-11-19 04:52:12,376 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.0) internal successors, (1684), 3 states have internal predecessors, (1684), 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)
[2021-11-19 04:52:12,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 14145 states and 18318 transitions.
[2021-11-19 04:52:12,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1691
[2021-11-19 04:52:12,429 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:52:12,430 INFO  L514         BasicCegarLoop]: trace histogram [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, 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]
[2021-11-19 04:52:12,431 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-19 04:52:12,431 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:52:12,432 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:52:12,433 INFO  L85        PathProgramCache]: Analyzing trace with hash -646898017, now seen corresponding path program 1 times
[2021-11-19 04:52:12,433 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:52:12,434 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055891643]
[2021-11-19 04:52:12,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:52:12,434 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:12,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:13,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-19 04:52:13,044 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:13,044 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055891643]
[2021-11-19 04:52:13,044 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055891643] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:13,044 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:13,045 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 04:52:13,045 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020349411]
[2021-11-19 04:52:13,045 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:13,048 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:52:13,048 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:13,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:52:13,049 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:13,049 INFO  L87              Difference]: Start difference. First operand 14145 states and 18318 transitions. Second operand  has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 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)
[2021-11-19 04:52:17,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:52:17,945 INFO  L93              Difference]: Finished difference Result 41881 states and 54227 transitions.
[2021-11-19 04:52:17,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:52:17,946 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 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 1690
[2021-11-19 04:52:17,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:52:18,007 INFO  L225             Difference]: With dead ends: 41881
[2021-11-19 04:52:18,008 INFO  L226             Difference]: Without dead ends: 27738
[2021-11-19 04:52:18,025 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
[2021-11-19 04:52:18,026 INFO  L933         BasicCegarLoop]: 1034 mSDtfsCounter, 2399 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4611 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2021-11-19 04:52:18,027 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2399 Valid, 1209 Invalid, 5522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [911 Valid, 4611 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2021-11-19 04:52:18,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27738 states.
[2021-11-19 04:52:18,472 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27738 to 27736.
[2021-11-19 04:52:18,505 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27736 states, 27735 states have (on average 1.2160807643771407) internal successors, (33728), 27735 states have internal predecessors, (33728), 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)
[2021-11-19 04:52:18,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27736 states to 27736 states and 33728 transitions.
[2021-11-19 04:52:18,549 INFO  L78                 Accepts]: Start accepts. Automaton has 27736 states and 33728 transitions. Word has length 1690
[2021-11-19 04:52:18,550 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:52:18,550 INFO  L470      AbstractCegarLoop]: Abstraction has 27736 states and 33728 transitions.
[2021-11-19 04:52:18,551 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 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)
[2021-11-19 04:52:18,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 27736 states and 33728 transitions.
[2021-11-19 04:52:18,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1696
[2021-11-19 04:52:18,637 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:52:18,638 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]
[2021-11-19 04:52:18,639 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-19 04:52:18,640 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:52:18,640 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:52:18,641 INFO  L85        PathProgramCache]: Analyzing trace with hash -1762579593, now seen corresponding path program 1 times
[2021-11-19 04:52:18,641 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:52:18,642 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683230670]
[2021-11-19 04:52:18,642 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:52:18,642 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:18,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:19,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 04:52:19,782 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:19,782 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683230670]
[2021-11-19 04:52:19,782 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683230670] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:19,782 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:19,783 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 04:52:19,783 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601784152]
[2021-11-19 04:52:19,784 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:19,787 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:52:19,787 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:19,788 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:52:19,788 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:19,789 INFO  L87              Difference]: Start difference. First operand 27736 states and 33728 transitions. Second operand  has 3 states, 3 states have (on average 565.0) internal successors, (1695), 3 states have internal predecessors, (1695), 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)
[2021-11-19 04:52:25,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:52:25,155 INFO  L93              Difference]: Finished difference Result 69081 states and 84539 transitions.
[2021-11-19 04:52:25,155 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:52:25,156 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 565.0) internal successors, (1695), 3 states have internal predecessors, (1695), 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 1695
[2021-11-19 04:52:25,158 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:52:25,246 INFO  L225             Difference]: With dead ends: 69081
[2021-11-19 04:52:25,246 INFO  L226             Difference]: Without dead ends: 41347
[2021-11-19 04:52:25,281 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:25,283 INFO  L933         BasicCegarLoop]: 906 mSDtfsCounter, 490 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 1603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 6077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2021-11-19 04:52:25,283 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 993 Invalid, 6077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2021-11-19 04:52:25,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41347 states.
[2021-11-19 04:52:25,981 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41347 to 41326.
[2021-11-19 04:52:26,026 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41326 states, 41325 states have (on average 1.21664851784634) internal successors, (50278), 41325 states have internal predecessors, (50278), 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)
[2021-11-19 04:52:26,098 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41326 states to 41326 states and 50278 transitions.
[2021-11-19 04:52:26,098 INFO  L78                 Accepts]: Start accepts. Automaton has 41326 states and 50278 transitions. Word has length 1695
[2021-11-19 04:52:26,100 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:52:26,100 INFO  L470      AbstractCegarLoop]: Abstraction has 41326 states and 50278 transitions.
[2021-11-19 04:52:26,101 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 565.0) internal successors, (1695), 3 states have internal predecessors, (1695), 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)
[2021-11-19 04:52:26,104 INFO  L276                IsEmpty]: Start isEmpty. Operand 41326 states and 50278 transitions.
[2021-11-19 04:52:26,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1753
[2021-11-19 04:52:26,190 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:52:26,191 INFO  L514         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 04:52:26,192 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-19 04:52:26,192 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:52:26,193 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:52:26,194 INFO  L85        PathProgramCache]: Analyzing trace with hash -261397112, now seen corresponding path program 1 times
[2021-11-19 04:52:26,194 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:52:26,200 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382966799]
[2021-11-19 04:52:26,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:52:26,201 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:26,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:27,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 78 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-19 04:52:27,035 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:27,036 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382966799]
[2021-11-19 04:52:27,036 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382966799] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:27,036 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:27,037 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 04:52:27,037 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53273080]
[2021-11-19 04:52:27,037 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:27,039 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:52:27,040 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:27,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:52:27,041 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:27,042 INFO  L87              Difference]: Start difference. First operand 41326 states and 50278 transitions. Second operand  has 3 states, 3 states have (on average 582.6666666666666) internal successors, (1748), 2 states have internal predecessors, (1748), 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)
[2021-11-19 04:52:32,263 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:52:32,263 INFO  L93              Difference]: Finished difference Result 121713 states and 147441 transitions.
[2021-11-19 04:52:32,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:52:32,264 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 582.6666666666666) internal successors, (1748), 2 states have internal predecessors, (1748), 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 1752
[2021-11-19 04:52:32,265 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:52:32,389 INFO  L225             Difference]: With dead ends: 121713
[2021-11-19 04:52:32,389 INFO  L226             Difference]: Without dead ends: 80389
[2021-11-19 04:52:32,415 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
[2021-11-19 04:52:32,417 INFO  L933         BasicCegarLoop]: 1496 mSDtfsCounter, 1784 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 4784 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 5760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 4784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2021-11-19 04:52:32,417 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 1773 Invalid, 5760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 4784 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2021-11-19 04:52:32,497 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80389 states.
[2021-11-19 04:52:33,418 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80389 to 80381.
[2021-11-19 04:52:33,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80381 states, 80380 states have (on average 1.1488181139586962) internal successors, (92342), 80380 states have internal predecessors, (92342), 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)
[2021-11-19 04:52:33,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80381 states to 80381 states and 92342 transitions.
[2021-11-19 04:52:33,616 INFO  L78                 Accepts]: Start accepts. Automaton has 80381 states and 92342 transitions. Word has length 1752
[2021-11-19 04:52:33,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:52:33,617 INFO  L470      AbstractCegarLoop]: Abstraction has 80381 states and 92342 transitions.
[2021-11-19 04:52:33,617 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 582.6666666666666) internal successors, (1748), 2 states have internal predecessors, (1748), 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)
[2021-11-19 04:52:33,618 INFO  L276                IsEmpty]: Start isEmpty. Operand 80381 states and 92342 transitions.
[2021-11-19 04:52:34,028 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1771
[2021-11-19 04:52:34,028 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:52:34,030 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-19 04:52:34,030 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-19 04:52:34,030 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:52:34,031 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:52:34,032 INFO  L85        PathProgramCache]: Analyzing trace with hash 650538970, now seen corresponding path program 1 times
[2021-11-19 04:52:34,032 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:52:34,032 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668219702]
[2021-11-19 04:52:34,032 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:52:34,033 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:34,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:34,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 118 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-19 04:52:34,977 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:34,978 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668219702]
[2021-11-19 04:52:34,978 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668219702] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:34,978 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:34,979 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 04:52:34,979 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73937215]
[2021-11-19 04:52:34,979 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:34,982 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:52:34,983 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:34,983 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:52:34,983 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:34,984 INFO  L87              Difference]: Start difference. First operand 80381 states and 92342 transitions. Second operand  has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 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)
[2021-11-19 04:52:40,618 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:52:40,618 INFO  L93              Difference]: Finished difference Result 201526 states and 234243 transitions.
[2021-11-19 04:52:40,619 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:52:40,620 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 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 1770
[2021-11-19 04:52:40,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:52:40,783 INFO  L225             Difference]: With dead ends: 201526
[2021-11-19 04:52:40,784 INFO  L226             Difference]: Without dead ends: 121147
[2021-11-19 04:52:40,824 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
[2021-11-19 04:52:40,828 INFO  L933         BasicCegarLoop]: 3112 mSDtfsCounter, 1884 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 4543 mSolverCounterSat, 1126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 5669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 4543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2021-11-19 04:52:40,829 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1884 Valid, 3342 Invalid, 5669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 4543 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2021-11-19 04:52:41,178 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121147 states.
[2021-11-19 04:52:42,293 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121147 to 121139.
[2021-11-19 04:52:42,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 121139 states, 121138 states have (on average 1.121596856477736) internal successors, (135868), 121138 states have internal predecessors, (135868), 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)
[2021-11-19 04:52:42,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121139 states to 121139 states and 135868 transitions.
[2021-11-19 04:52:42,854 INFO  L78                 Accepts]: Start accepts. Automaton has 121139 states and 135868 transitions. Word has length 1770
[2021-11-19 04:52:42,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:52:42,855 INFO  L470      AbstractCegarLoop]: Abstraction has 121139 states and 135868 transitions.
[2021-11-19 04:52:42,855 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 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)
[2021-11-19 04:52:42,856 INFO  L276                IsEmpty]: Start isEmpty. Operand 121139 states and 135868 transitions.
[2021-11-19 04:52:43,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1784
[2021-11-19 04:52:43,318 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:52:43,319 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2021-11-19 04:52:43,319 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-19 04:52:43,320 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:52:43,320 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:52:43,321 INFO  L85        PathProgramCache]: Analyzing trace with hash 988313551, now seen corresponding path program 1 times
[2021-11-19 04:52:43,321 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:52:43,321 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642926814]
[2021-11-19 04:52:43,322 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:52:43,322 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:43,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:44,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 04:52:44,162 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:44,162 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642926814]
[2021-11-19 04:52:44,163 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642926814] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:44,163 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:44,163 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 04:52:44,164 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245346350]
[2021-11-19 04:52:44,164 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:44,166 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:52:44,166 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:44,167 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:52:44,167 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:44,168 INFO  L87              Difference]: Start difference. First operand 121139 states and 135868 transitions. Second operand  has 3 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 2 states have internal predecessors, (1783), 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)
[2021-11-19 04:52:49,955 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:52:49,955 INFO  L93              Difference]: Finished difference Result 345850 states and 387084 transitions.
[2021-11-19 04:52:49,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:52:49,956 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 2 states have internal predecessors, (1783), 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 1783
[2021-11-19 04:52:49,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:52:50,566 INFO  L225             Difference]: With dead ends: 345850
[2021-11-19 04:52:50,566 INFO  L226             Difference]: Without dead ends: 224713
[2021-11-19 04:52:50,662 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
[2021-11-19 04:52:50,664 INFO  L933         BasicCegarLoop]: 1413 mSDtfsCounter, 2050 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4281 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 4281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2021-11-19 04:52:50,665 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 1546 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1270 Valid, 4281 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2021-11-19 04:52:50,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 224713 states.
[2021-11-19 04:52:53,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 224713 to 202635.
[2021-11-19 04:52:53,284 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 202635 states, 202634 states have (on average 1.09941076028702) internal successors, (222778), 202634 states have internal predecessors, (222778), 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)
[2021-11-19 04:52:53,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 202635 states to 202635 states and 222778 transitions.
[2021-11-19 04:52:53,990 INFO  L78                 Accepts]: Start accepts. Automaton has 202635 states and 222778 transitions. Word has length 1783
[2021-11-19 04:52:53,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:52:53,992 INFO  L470      AbstractCegarLoop]: Abstraction has 202635 states and 222778 transitions.
[2021-11-19 04:52:53,992 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 2 states have internal predecessors, (1783), 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)
[2021-11-19 04:52:53,993 INFO  L276                IsEmpty]: Start isEmpty. Operand 202635 states and 222778 transitions.
[2021-11-19 04:52:54,236 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1807
[2021-11-19 04:52:54,236 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:52:54,238 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-19 04:52:54,238 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-19 04:52:54,238 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:52:54,239 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:52:54,239 INFO  L85        PathProgramCache]: Analyzing trace with hash -1545329421, now seen corresponding path program 1 times
[2021-11-19 04:52:54,240 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:52:54,240 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799392788]
[2021-11-19 04:52:54,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:52:54,241 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:52:54,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:52:54,756 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2021-11-19 04:52:54,756 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:52:54,756 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799392788]
[2021-11-19 04:52:54,756 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799392788] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:52:54,757 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:52:54,757 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 04:52:54,757 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997432558]
[2021-11-19 04:52:54,757 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:52:54,760 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:52:54,760 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:52:54,760 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:52:54,760 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:52:54,761 INFO  L87              Difference]: Start difference. First operand 202635 states and 222778 transitions. Second operand  has 3 states, 3 states have (on average 571.6666666666666) internal successors, (1715), 2 states have internal predecessors, (1715), 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)
[2021-11-19 04:53:01,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:53:01,591 INFO  L93              Difference]: Finished difference Result 471509 states and 516236 transitions.
[2021-11-19 04:53:01,592 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:53:01,592 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 571.6666666666666) internal successors, (1715), 2 states have internal predecessors, (1715), 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 1806
[2021-11-19 04:53:01,592 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:53:01,951 INFO  L225             Difference]: With dead ends: 471509
[2021-11-19 04:53:01,951 INFO  L226             Difference]: Without dead ends: 268876
[2021-11-19 04:53:02,049 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
[2021-11-19 04:53:02,050 INFO  L933         BasicCegarLoop]: 956 mSDtfsCounter, 2095 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4502 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 4502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2021-11-19 04:53:02,050 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 1082 Invalid, 5635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 4502 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2021-11-19 04:53:02,250 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 268876 states.
[2021-11-19 04:53:05,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 268876 to 258670.
[2021-11-19 04:53:05,420 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 258670 states, 258669 states have (on average 1.064739106734862) internal successors, (275415), 258669 states have internal predecessors, (275415), 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)
[2021-11-19 04:53:05,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 258670 states to 258670 states and 275415 transitions.
[2021-11-19 04:53:05,872 INFO  L78                 Accepts]: Start accepts. Automaton has 258670 states and 275415 transitions. Word has length 1806
[2021-11-19 04:53:05,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:53:05,873 INFO  L470      AbstractCegarLoop]: Abstraction has 258670 states and 275415 transitions.
[2021-11-19 04:53:05,873 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 571.6666666666666) internal successors, (1715), 2 states have internal predecessors, (1715), 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)
[2021-11-19 04:53:05,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 258670 states and 275415 transitions.
[2021-11-19 04:53:06,068 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1916
[2021-11-19 04:53:06,068 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:53:06,069 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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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 04:53:06,069 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-19 04:53:06,070 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:53:06,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:53:06,070 INFO  L85        PathProgramCache]: Analyzing trace with hash 986606245, now seen corresponding path program 1 times
[2021-11-19 04:53:06,071 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:53:06,071 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243525654]
[2021-11-19 04:53:06,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:53:06,071 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:53:06,208 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:53:07,475 INFO  L134       CoverageAnalysis]: Checked inductivity of 445 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2021-11-19 04:53:07,476 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:53:07,476 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243525654]
[2021-11-19 04:53:07,476 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243525654] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:53:07,476 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:53:07,477 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 04:53:07,477 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076595680]
[2021-11-19 04:53:07,477 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:53:07,479 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:53:07,479 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:53:07,480 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:53:07,480 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:53:07,480 INFO  L87              Difference]: Start difference. First operand 258670 states and 275415 transitions. Second operand  has 3 states, 3 states have (on average 619.6666666666666) internal successors, (1859), 3 states have internal predecessors, (1859), 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)
[2021-11-19 04:53:14,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 04:53:14,664 INFO  L93              Difference]: Finished difference Result 607408 states and 647747 transitions.
[2021-11-19 04:53:14,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 04:53:14,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 619.6666666666666) internal successors, (1859), 3 states have internal predecessors, (1859), 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 1915
[2021-11-19 04:53:14,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 04:53:15,099 INFO  L225             Difference]: With dead ends: 607408
[2021-11-19 04:53:15,099 INFO  L226             Difference]: Without dead ends: 347042
[2021-11-19 04:53:15,201 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
[2021-11-19 04:53:15,202 INFO  L933         BasicCegarLoop]: 3196 mSDtfsCounter, 1798 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 5070 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 5912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2021-11-19 04:53:15,202 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1798 Valid, 3410 Invalid, 5912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 5070 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2021-11-19 04:53:15,522 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 347042 states.
[2021-11-19 04:53:19,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 347042 to 345274.
[2021-11-19 04:53:19,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 345274 states, 345273 states have (on average 1.0540239173060157) internal successors, (363926), 345273 states have internal predecessors, (363926), 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)
[2021-11-19 04:53:20,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 345274 states to 345274 states and 363926 transitions.
[2021-11-19 04:53:20,921 INFO  L78                 Accepts]: Start accepts. Automaton has 345274 states and 363926 transitions. Word has length 1915
[2021-11-19 04:53:20,921 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 04:53:20,922 INFO  L470      AbstractCegarLoop]: Abstraction has 345274 states and 363926 transitions.
[2021-11-19 04:53:20,922 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 619.6666666666666) internal successors, (1859), 3 states have internal predecessors, (1859), 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)
[2021-11-19 04:53:20,922 INFO  L276                IsEmpty]: Start isEmpty. Operand 345274 states and 363926 transitions.
[2021-11-19 04:53:21,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2074
[2021-11-19 04:53:21,201 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 04:53:21,203 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2021-11-19 04:53:21,203 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-19 04:53:21,203 INFO  L402      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 04:53:21,203 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 04:53:21,204 INFO  L85        PathProgramCache]: Analyzing trace with hash -1917809461, now seen corresponding path program 1 times
[2021-11-19 04:53:21,204 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 04:53:21,204 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386648520]
[2021-11-19 04:53:21,205 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 04:53:21,205 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 04:53:21,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 04:53:22,029 INFO  L134       CoverageAnalysis]: Checked inductivity of 641 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2021-11-19 04:53:22,030 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 04:53:22,030 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386648520]
[2021-11-19 04:53:22,030 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386648520] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 04:53:22,030 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 04:53:22,031 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 04:53:22,031 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431136733]
[2021-11-19 04:53:22,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 04:53:22,034 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 04:53:22,034 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 04:53:22,035 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 04:53:22,035 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 04:53:22,036 INFO  L87              Difference]: Start difference. First operand 345274 states and 363926 transitions. Second operand  has 3 states, 3 states have (on average 672.3333333333334) internal successors, (2017), 3 states have internal predecessors, (2017), 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)