./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label48.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8 --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 606591a7c1e23b6a54a153c7a3b7d2f4ee5f184007ea62f80801d9be75eb8a64
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-13 22:04:07,862 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 22:04:07,864 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 22:04:07,882 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 22:04:07,883 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 22:04:07,884 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 22:04:07,885 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 22:04:07,887 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 22:04:07,888 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 22:04:07,889 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 22:04:07,890 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 22:04:07,891 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 22:04:07,891 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 22:04:07,892 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 22:04:07,894 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 22:04:07,895 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 22:04:07,895 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 22:04:07,896 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 22:04:07,898 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 22:04:07,900 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 22:04:07,901 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 22:04:07,902 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 22:04:07,903 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 22:04:07,904 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 22:04:07,908 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 22:04:07,908 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 22:04:07,908 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 22:04:07,909 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 22:04:07,910 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 22:04:07,911 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 22:04:07,911 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 22:04:07,912 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 22:04:07,912 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 22:04:07,913 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 22:04:07,914 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 22:04:07,914 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 22:04:07,915 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 22:04:07,915 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 22:04:07,915 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 22:04:07,916 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 22:04:07,917 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 22:04:07,918 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-12-13 22:04:07,937 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 22:04:07,937 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 22:04:07,937 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 22:04:07,937 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 22:04:07,938 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 22:04:07,938 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 22:04:07,939 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 22:04:07,939 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 22:04:07,939 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 22:04:07,940 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 22:04:07,940 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 22:04:07,940 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 22:04:07,940 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 22:04:07,940 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 22:04:07,940 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 22:04:07,941 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 22:04:07,941 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 22:04:07,941 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 22:04:07,941 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 22:04:07,941 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 22:04:07,941 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 22:04:07,942 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 22:04:07,942 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 22:04:07,942 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 22:04:07,942 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 22:04:07,942 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 22:04:07,943 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 22:04:07,943 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 22:04:07,943 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 22:04:07,943 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 22:04:07,943 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 22:04:07,943 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 22:04:07,944 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 22:04:07,944 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 22:04:07,944 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 22:04:07,944 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/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_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8
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 -> 606591a7c1e23b6a54a153c7a3b7d2f4ee5f184007ea62f80801d9be75eb8a64
[2022-12-13 22:04:08,149 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 22:04:08,165 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 22:04:08,167 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 22:04:08,168 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 22:04:08,169 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 22:04:08,169 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem05_label48.c
[2022-12-13 22:04:10,831 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 22:04:11,253 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 22:04:11,253 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/sv-benchmarks/c/eca-rers2012/Problem05_label48.c
[2022-12-13 22:04:11,290 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/data/abfcc766d/6d561783263d4c41be914c43fcd6ecdf/FLAG38c369ec1
[2022-12-13 22:04:11,304 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/data/abfcc766d/6d561783263d4c41be914c43fcd6ecdf
[2022-12-13 22:04:11,307 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 22:04:11,308 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 22:04:11,309 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 22:04:11,309 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 22:04:11,312 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 22:04:11,313 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:04:11" (1/1) ...
[2022-12-13 22:04:11,314 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ecc046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:11, skipping insertion in model container
[2022-12-13 22:04:11,314 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:04:11" (1/1) ...
[2022-12-13 22:04:11,321 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 22:04:11,525 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 22:04:12,815 WARN  L237   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_06918985-dd53-421b-9c3b-7b664cf24fb2/sv-benchmarks/c/eca-rers2012/Problem05_label48.c[375366,375379]
[2022-12-13 22:04:12,833 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 22:04:12,839 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 22:04:13,627 WARN  L237   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_06918985-dd53-421b-9c3b-7b664cf24fb2/sv-benchmarks/c/eca-rers2012/Problem05_label48.c[375366,375379]
[2022-12-13 22:04:13,634 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 22:04:13,673 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 22:04:13,673 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13 WrapperNode
[2022-12-13 22:04:13,673 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 22:04:13,674 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 22:04:13,674 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 22:04:13,674 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 22:04:13,679 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:13,734 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:13,960 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-12-13 22:04:13,960 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 22:04:13,961 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 22:04:13,961 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 22:04:13,961 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 22:04:13,969 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:13,969 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,005 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,005 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,158 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,185 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,199 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,210 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,250 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 22:04:14,251 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 22:04:14,251 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 22:04:14,251 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 22:04:14,251 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (1/1) ...
[2022-12-13 22:04:14,289 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 22:04:14,300 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 22:04:14,315 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 22:04:14,317 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 22:04:14,356 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 22:04:14,357 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 22:04:14,357 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 22:04:14,357 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 22:04:14,424 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 22:04:14,425 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 22:04:19,685 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 22:04:19,700 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 22:04:19,701 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 22:04:19,704 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:04:19 BoogieIcfgContainer
[2022-12-13 22:04:19,704 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 22:04:19,706 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 22:04:19,706 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 22:04:19,708 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 22:04:19,708 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:04:11" (1/3) ...
[2022-12-13 22:04:19,709 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af9b1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:04:19, skipping insertion in model container
[2022-12-13 22:04:19,709 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:04:13" (2/3) ...
[2022-12-13 22:04:19,709 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af9b1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:04:19, skipping insertion in model container
[2022-12-13 22:04:19,709 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:04:19" (3/3) ...
[2022-12-13 22:04:19,710 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label48.c
[2022-12-13 22:04:19,723 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 22:04:19,724 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-13 22:04:19,788 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 22:04:19,792 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1faa565c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 22:04:19,792 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-13 22:04:19,800 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)
[2022-12-13 22:04:19,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1642
[2022-12-13 22:04:19,869 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:04:19,870 INFO  L195           NwaCegarLoop]: 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]
[2022-12-13 22:04:19,871 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:04:19,874 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:04:19,875 INFO  L85        PathProgramCache]: Analyzing trace with hash -1102563399, now seen corresponding path program 1 times
[2022-12-13 22:04:19,881 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:04:19,882 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467650060]
[2022-12-13 22:04:19,882 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:04:19,882 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:04:20,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:04:22,484 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:04:22,484 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:04:22,484 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467650060]
[2022-12-13 22:04:22,485 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467650060] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:04:22,485 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:04:22,485 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 22:04:22,486 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339183761]
[2022-12-13 22:04:22,487 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:04:22,491 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:04:22,492 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:04:22,517 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:04:22,518 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:22,522 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 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:27,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:04:27,757 INFO  L93              Difference]: Finished difference Result 6186 states and 11691 transitions.
[2022-12-13 22:04:27,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:04:27,760 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 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 1641
[2022-12-13 22:04:27,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:04:27,783 INFO  L225             Difference]: With dead ends: 6186
[2022-12-13 22:04:27,783 INFO  L226             Difference]: Without dead ends: 3937
[2022-12-13 22:04:27,789 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:27,791 INFO  L413           NwaCegarLoop]: 1285 mSDtfsCounter, 669 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 2651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 7662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2651 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-12-13 22:04:27,792 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1442 Invalid, 7662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2651 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-12-13 22:04:27,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3937 states.
[2022-12-13 22:04:27,885 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3921.
[2022-12-13 22:04:27,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3921 states, 3920 states have (on average 1.7311224489795918) internal successors, (6786), 3920 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:27,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6786 transitions.
[2022-12-13 22:04:27,899 INFO  L78                 Accepts]: Start accepts. Automaton has 3921 states and 6786 transitions. Word has length 1641
[2022-12-13 22:04:27,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:04:27,901 INFO  L495      AbstractCegarLoop]: Abstraction has 3921 states and 6786 transitions.
[2022-12-13 22:04:27,902 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 547.0) internal successors, (1641), 2 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:27,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 3921 states and 6786 transitions.
[2022-12-13 22:04:27,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1653
[2022-12-13 22:04:27,941 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:04:27,942 INFO  L195           NwaCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:04:27,942 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 22:04:27,942 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:04:27,942 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:04:27,943 INFO  L85        PathProgramCache]: Analyzing trace with hash -1050054071, now seen corresponding path program 1 times
[2022-12-13 22:04:27,943 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:04:27,943 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312506196]
[2022-12-13 22:04:27,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:04:27,944 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:04:28,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:04:29,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:04:29,155 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:04:29,155 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312506196]
[2022-12-13 22:04:29,155 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312506196] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:04:29,155 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:04:29,156 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 22:04:29,156 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139289811]
[2022-12-13 22:04:29,156 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:04:29,159 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:04:29,159 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:04:29,160 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:04:29,160 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:29,161 INFO  L87              Difference]: Start difference. First operand 3921 states and 6786 transitions. Second operand  has 3 states, 3 states have (on average 550.6666666666666) internal successors, (1652), 2 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:34,186 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:04:34,186 INFO  L93              Difference]: Finished difference Result 11272 states and 19663 transitions.
[2022-12-13 22:04:34,186 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:04:34,187 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 550.6666666666666) internal successors, (1652), 2 states have internal predecessors, (1652), 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 1652
[2022-12-13 22:04:34,187 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:04:34,201 INFO  L225             Difference]: With dead ends: 11272
[2022-12-13 22:04:34,201 INFO  L226             Difference]: Without dead ends: 7353
[2022-12-13 22:04:34,205 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:34,205 INFO  L413           NwaCegarLoop]: 1547 mSDtfsCounter, 2704 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 2374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2374 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-12-13 22:04:34,206 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 1695 Invalid, 6848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2374 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-12-13 22:04:34,211 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7353 states.
[2022-12-13 22:04:34,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351.
[2022-12-13 22:04:34,292 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7351 states, 7350 states have (on average 1.5522448979591836) internal successors, (11409), 7350 states have internal predecessors, (11409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:34,302 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 11409 transitions.
[2022-12-13 22:04:34,302 INFO  L78                 Accepts]: Start accepts. Automaton has 7351 states and 11409 transitions. Word has length 1652
[2022-12-13 22:04:34,303 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:04:34,303 INFO  L495      AbstractCegarLoop]: Abstraction has 7351 states and 11409 transitions.
[2022-12-13 22:04:34,303 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 550.6666666666666) internal successors, (1652), 2 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:34,304 INFO  L276                IsEmpty]: Start isEmpty. Operand 7351 states and 11409 transitions.
[2022-12-13 22:04:34,329 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1671
[2022-12-13 22:04:34,329 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:04:34,330 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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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]
[2022-12-13 22:04:34,330 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 22:04:34,330 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:04:34,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:04:34,331 INFO  L85        PathProgramCache]: Analyzing trace with hash 424660379, now seen corresponding path program 1 times
[2022-12-13 22:04:34,331 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:04:34,331 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231632529]
[2022-12-13 22:04:34,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:04:34,332 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:04:34,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:04:35,566 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:04:35,567 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:04:35,567 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231632529]
[2022-12-13 22:04:35,567 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231632529] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:04:35,567 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:04:35,567 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:04:35,567 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104074743]
[2022-12-13 22:04:35,567 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:04:35,569 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:04:35,569 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:04:35,570 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:04:35,570 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:35,570 INFO  L87              Difference]: Start difference. First operand 7351 states and 11409 transitions. Second operand  has 3 states, 3 states have (on average 556.6666666666666) internal successors, (1670), 3 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:40,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:04:40,992 INFO  L93              Difference]: Finished difference Result 21579 states and 33619 transitions.
[2022-12-13 22:04:40,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:04:40,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 556.6666666666666) internal successors, (1670), 3 states have internal predecessors, (1670), 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 1670
[2022-12-13 22:04:40,993 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:04:41,019 INFO  L225             Difference]: With dead ends: 21579
[2022-12-13 22:04:41,019 INFO  L226             Difference]: Without dead ends: 14230
[2022-12-13 22:04:41,024 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:04:41,024 INFO  L413           NwaCegarLoop]: 3689 mSDtfsCounter, 1860 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 5334 mSolverCounterSat, 2029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 7363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 5334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2022-12-13 22:04:41,025 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 3932 Invalid, 7363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 5334 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2022-12-13 22:04:41,033 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14230 states.
[2022-12-13 22:04:41,174 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14230 to 14166.
[2022-12-13 22:04:41,191 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14166 states, 14165 states have (on average 1.399011648429227) internal successors, (19817), 14165 states have internal predecessors, (19817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:41,209 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 19817 transitions.
[2022-12-13 22:04:41,209 INFO  L78                 Accepts]: Start accepts. Automaton has 14166 states and 19817 transitions. Word has length 1670
[2022-12-13 22:04:41,209 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:04:41,209 INFO  L495      AbstractCegarLoop]: Abstraction has 14166 states and 19817 transitions.
[2022-12-13 22:04:41,210 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 556.6666666666666) internal successors, (1670), 3 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:41,210 INFO  L276                IsEmpty]: Start isEmpty. Operand 14166 states and 19817 transitions.
[2022-12-13 22:04:41,240 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1688
[2022-12-13 22:04:41,240 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:04:41,241 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 22:04:41,241 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 22:04:41,241 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:04:41,241 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:04:41,242 INFO  L85        PathProgramCache]: Analyzing trace with hash -1713870949, now seen corresponding path program 1 times
[2022-12-13 22:04:41,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:04:41,242 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093202425]
[2022-12-13 22:04:41,242 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:04:41,242 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:04:41,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:04:42,086 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:04:42,086 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:04:42,086 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093202425]
[2022-12-13 22:04:42,086 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093202425] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:04:42,086 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:04:42,087 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 22:04:42,087 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550091490]
[2022-12-13 22:04:42,087 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:04:42,089 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:04:42,089 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:04:42,091 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:04:42,092 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:42,093 INFO  L87              Difference]: Start difference. First operand 14166 states and 19817 transitions. Second operand  has 3 states, 3 states have (on average 562.3333333333334) internal successors, (1687), 2 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:46,913 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:04:46,913 INFO  L93              Difference]: Finished difference Result 41916 states and 58675 transitions.
[2022-12-13 22:04:46,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:04:46,914 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 562.3333333333334) internal successors, (1687), 2 states have internal predecessors, (1687), 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 1687
[2022-12-13 22:04:46,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:04:46,967 INFO  L225             Difference]: With dead ends: 41916
[2022-12-13 22:04:46,967 INFO  L226             Difference]: Without dead ends: 27752
[2022-12-13 22:04:46,977 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:46,978 INFO  L413           NwaCegarLoop]: 1080 mSDtfsCounter, 3146 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 2127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 6900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-12-13 22:04:46,979 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 1167 Invalid, 6900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2127 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-12-13 22:04:46,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27752 states.
[2022-12-13 22:04:47,203 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27752 to 27752.
[2022-12-13 22:04:47,227 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27752 states, 27751 states have (on average 1.3435551872004612) internal successors, (37285), 27751 states have internal predecessors, (37285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:47,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27752 states to 27752 states and 37285 transitions.
[2022-12-13 22:04:47,260 INFO  L78                 Accepts]: Start accepts. Automaton has 27752 states and 37285 transitions. Word has length 1687
[2022-12-13 22:04:47,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:04:47,260 INFO  L495      AbstractCegarLoop]: Abstraction has 27752 states and 37285 transitions.
[2022-12-13 22:04:47,260 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 562.3333333333334) internal successors, (1687), 2 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:47,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 27752 states and 37285 transitions.
[2022-12-13 22:04:47,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1747
[2022-12-13 22:04:47,298 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:04:47,298 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 22:04:47,299 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-13 22:04:47,299 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:04:47,299 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:04:47,300 INFO  L85        PathProgramCache]: Analyzing trace with hash 1144168462, now seen corresponding path program 1 times
[2022-12-13 22:04:47,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:04:47,300 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078191466]
[2022-12-13 22:04:47,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:04:47,300 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:04:47,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:04:48,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:04:48,437 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:04:48,437 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078191466]
[2022-12-13 22:04:48,437 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078191466] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:04:48,437 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:04:48,437 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 22:04:48,438 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128891859]
[2022-12-13 22:04:48,438 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:04:48,439 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:04:48,439 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:04:48,440 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:04:48,440 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:48,441 INFO  L87              Difference]: Start difference. First operand 27752 states and 37285 transitions. Second operand  has 3 states, 3 states have (on average 582.0) internal successors, (1746), 2 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:53,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:04:53,122 INFO  L93              Difference]: Finished difference Result 69192 states and 94946 transitions.
[2022-12-13 22:04:53,122 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:04:53,123 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 582.0) internal successors, (1746), 2 states have internal predecessors, (1746), 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 1746
[2022-12-13 22:04:53,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:04:53,162 INFO  L225             Difference]: With dead ends: 69192
[2022-12-13 22:04:53,162 INFO  L226             Difference]: Without dead ends: 41442
[2022-12-13 22:04:53,175 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:53,176 INFO  L413           NwaCegarLoop]: 1877 mSDtfsCounter, 1854 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 5463 mSolverCounterSat, 2124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 7587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2124 IncrementalHoareTripleChecker+Valid, 5463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2022-12-13 22:04:53,176 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 2097 Invalid, 7587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2124 Valid, 5463 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2022-12-13 22:04:53,202 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41442 states.
[2022-12-13 22:04:53,469 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41442 to 41352.
[2022-12-13 22:04:53,497 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41352 states, 41351 states have (on average 1.3253125680152837) internal successors, (54803), 41351 states have internal predecessors, (54803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:53,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41352 states to 41352 states and 54803 transitions.
[2022-12-13 22:04:53,541 INFO  L78                 Accepts]: Start accepts. Automaton has 41352 states and 54803 transitions. Word has length 1746
[2022-12-13 22:04:53,541 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:04:53,541 INFO  L495      AbstractCegarLoop]: Abstraction has 41352 states and 54803 transitions.
[2022-12-13 22:04:53,541 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 582.0) internal successors, (1746), 2 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:04:53,542 INFO  L276                IsEmpty]: Start isEmpty. Operand 41352 states and 54803 transitions.
[2022-12-13 22:04:53,618 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1751
[2022-12-13 22:04:53,618 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:04:53,618 INFO  L195           NwaCegarLoop]: 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, 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]
[2022-12-13 22:04:53,619 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 22:04:53,619 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:04:53,619 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:04:53,619 INFO  L85        PathProgramCache]: Analyzing trace with hash 588268231, now seen corresponding path program 1 times
[2022-12-13 22:04:53,619 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:04:53,620 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644074446]
[2022-12-13 22:04:53,620 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:04:53,620 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:04:53,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:04:54,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2022-12-13 22:04:54,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:04:54,937 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644074446]
[2022-12-13 22:04:54,938 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644074446] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:04:54,938 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:04:54,938 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 22:04:54,938 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42677245]
[2022-12-13 22:04:54,938 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:04:54,939 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:04:54,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:04:54,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:04:54,941 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:04:54,941 INFO  L87              Difference]: Start difference. First operand 41352 states and 54803 transitions. Second operand  has 3 states, 3 states have (on average 547.6666666666666) internal successors, (1643), 2 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:00,470 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:05:00,470 INFO  L93              Difference]: Finished difference Result 118370 states and 156875 transitions.
[2022-12-13 22:05:00,471 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:05:00,471 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 547.6666666666666) internal successors, (1643), 2 states have internal predecessors, (1643), 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 1750
[2022-12-13 22:05:00,474 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:05:00,546 INFO  L225             Difference]: With dead ends: 118370
[2022-12-13 22:05:00,546 INFO  L226             Difference]: Without dead ends: 77020
[2022-12-13 22:05:00,570 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:00,571 INFO  L413           NwaCegarLoop]: 2113 mSDtfsCounter, 208 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 5855 mSolverCounterSat, 1401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 7256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 5855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2022-12-13 22:05:00,571 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2411 Invalid, 7256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1401 Valid, 5855 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2022-12-13 22:05:00,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77020 states.
[2022-12-13 22:05:01,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77020 to 77012.
[2022-12-13 22:05:01,334 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77012 states, 77011 states have (on average 1.232525223669346) internal successors, (94918), 77011 states have internal predecessors, (94918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:01,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77012 states to 77012 states and 94918 transitions.
[2022-12-13 22:05:01,411 INFO  L78                 Accepts]: Start accepts. Automaton has 77012 states and 94918 transitions. Word has length 1750
[2022-12-13 22:05:01,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:05:01,413 INFO  L495      AbstractCegarLoop]: Abstraction has 77012 states and 94918 transitions.
[2022-12-13 22:05:01,413 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 547.6666666666666) internal successors, (1643), 2 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:01,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 77012 states and 94918 transitions.
[2022-12-13 22:05:01,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1768
[2022-12-13 22:05:01,478 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:05:01,479 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:05:01,479 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 22:05:01,479 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:05:01,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:05:01,480 INFO  L85        PathProgramCache]: Analyzing trace with hash 654272759, now seen corresponding path program 1 times
[2022-12-13 22:05:01,480 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:05:01,480 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743049755]
[2022-12-13 22:05:01,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:05:01,480 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:05:01,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:05:02,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:05:02,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:05:02,719 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743049755]
[2022-12-13 22:05:02,719 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743049755] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:05:02,719 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:05:02,720 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:05:02,720 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174633646]
[2022-12-13 22:05:02,720 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:05:02,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:05:02,721 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:05:02,723 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:05:02,723 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:02,724 INFO  L87              Difference]: Start difference. First operand 77012 states and 94918 transitions. Second operand  has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:08,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:05:08,223 INFO  L93              Difference]: Finished difference Result 187993 states and 234855 transitions.
[2022-12-13 22:05:08,223 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:05:08,224 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 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 1767
[2022-12-13 22:05:08,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:05:08,345 INFO  L225             Difference]: With dead ends: 187993
[2022-12-13 22:05:08,345 INFO  L226             Difference]: Without dead ends: 110983
[2022-12-13 22:05:08,386 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:05:08,386 INFO  L413           NwaCegarLoop]: 3574 mSDtfsCounter, 2055 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 4765 mSolverCounterSat, 2205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 6970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2205 IncrementalHoareTripleChecker+Valid, 4765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-12-13 22:05:08,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 3815 Invalid, 6970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2205 Valid, 4765 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-12-13 22:05:08,469 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110983 states.
[2022-12-13 22:05:09,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110983 to 110976.
[2022-12-13 22:05:09,293 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110976 states, 110975 states have (on average 1.1914575354809642) internal successors, (132222), 110975 states have internal predecessors, (132222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:09,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110976 states to 110976 states and 132222 transitions.
[2022-12-13 22:05:09,419 INFO  L78                 Accepts]: Start accepts. Automaton has 110976 states and 132222 transitions. Word has length 1767
[2022-12-13 22:05:09,419 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:05:09,420 INFO  L495      AbstractCegarLoop]: Abstraction has 110976 states and 132222 transitions.
[2022-12-13 22:05:09,420 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:09,420 INFO  L276                IsEmpty]: Start isEmpty. Operand 110976 states and 132222 transitions.
[2022-12-13 22:05:09,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1774
[2022-12-13 22:05:09,498 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:05:09,499 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 22:05:09,499 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-13 22:05:09,499 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:05:09,500 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:05:09,500 INFO  L85        PathProgramCache]: Analyzing trace with hash 1179346125, now seen corresponding path program 1 times
[2022-12-13 22:05:09,501 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:05:09,501 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191936057]
[2022-12-13 22:05:09,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:05:09,501 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:05:09,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:05:12,389 INFO  L134       CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 22:05:12,389 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:05:12,389 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191936057]
[2022-12-13 22:05:12,389 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191936057] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:05:12,389 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:05:12,389 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-12-13 22:05:12,389 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889213482]
[2022-12-13 22:05:12,389 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:05:12,390 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-12-13 22:05:12,390 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:05:12,391 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-12-13 22:05:12,391 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 22:05:12,392 INFO  L87              Difference]: Start difference. First operand 110976 states and 132222 transitions. Second operand  has 5 states, 5 states have (on average 354.6) internal successors, (1773), 5 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:17,886 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:05:17,887 INFO  L93              Difference]: Finished difference Result 278047 states and 329181 transitions.
[2022-12-13 22:05:17,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 22:05:17,887 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 354.6) internal successors, (1773), 5 states have internal predecessors, (1773), 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 1773
[2022-12-13 22:05:17,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:05:18,039 INFO  L225             Difference]: With dead ends: 278047
[2022-12-13 22:05:18,039 INFO  L226             Difference]: Without dead ends: 167073
[2022-12-13 22:05:18,078 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 22:05:18,078 INFO  L413           NwaCegarLoop]: 1578 mSDtfsCounter, 7448 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 7108 mSolverCounterSat, 3309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7448 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 10417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3309 IncrementalHoareTripleChecker+Valid, 7108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2022-12-13 22:05:18,079 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7448 Valid, 1928 Invalid, 10417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3309 Valid, 7108 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2022-12-13 22:05:18,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 167073 states.
[2022-12-13 22:05:19,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 167073 to 148308.
[2022-12-13 22:05:19,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 148308 states, 148307 states have (on average 1.1087676239152569) internal successors, (164438), 148307 states have internal predecessors, (164438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:19,564 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148308 states to 148308 states and 164438 transitions.
[2022-12-13 22:05:19,564 INFO  L78                 Accepts]: Start accepts. Automaton has 148308 states and 164438 transitions. Word has length 1773
[2022-12-13 22:05:19,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:05:19,565 INFO  L495      AbstractCegarLoop]: Abstraction has 148308 states and 164438 transitions.
[2022-12-13 22:05:19,565 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 354.6) internal successors, (1773), 5 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:19,565 INFO  L276                IsEmpty]: Start isEmpty. Operand 148308 states and 164438 transitions.
[2022-12-13 22:05:19,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1998
[2022-12-13 22:05:19,868 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:05:19,870 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:05:19,870 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-13 22:05:19,870 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:05:19,871 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:05:19,871 INFO  L85        PathProgramCache]: Analyzing trace with hash 319272817, now seen corresponding path program 1 times
[2022-12-13 22:05:19,872 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:05:19,872 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550899551]
[2022-12-13 22:05:19,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:05:19,872 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:05:20,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:05:22,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 770 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked.
[2022-12-13 22:05:22,000 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:05:22,000 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550899551]
[2022-12-13 22:05:22,000 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550899551] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:05:22,000 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:05:22,001 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:05:22,001 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693606994]
[2022-12-13 22:05:22,001 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:05:22,002 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:05:22,002 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:05:22,003 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:05:22,003 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:22,003 INFO  L87              Difference]: Start difference. First operand 148308 states and 164438 transitions. Second operand  has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:27,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:05:27,464 INFO  L93              Difference]: Finished difference Result 340841 states and 379846 transitions.
[2022-12-13 22:05:27,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:05:27,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 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 1997
[2022-12-13 22:05:27,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:05:27,709 INFO  L225             Difference]: With dead ends: 340841
[2022-12-13 22:05:27,709 INFO  L226             Difference]: Without dead ends: 190822
[2022-12-13 22:05:27,762 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:05:27,763 INFO  L413           NwaCegarLoop]: 3949 mSDtfsCounter, 1757 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 6269 mSolverCounterSat, 1242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 7511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1242 IncrementalHoareTripleChecker+Valid, 6269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2022-12-13 22:05:27,763 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 4170 Invalid, 7511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1242 Valid, 6269 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2022-12-13 22:05:27,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 190822 states.
[2022-12-13 22:05:29,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 190822 to 189054.
[2022-12-13 22:05:29,594 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 189054 states, 189053 states have (on average 1.0974806006781168) internal successors, (207482), 189053 states have internal predecessors, (207482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:29,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 189054 states to 189054 states and 207482 transitions.
[2022-12-13 22:05:29,865 INFO  L78                 Accepts]: Start accepts. Automaton has 189054 states and 207482 transitions. Word has length 1997
[2022-12-13 22:05:29,865 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:05:29,866 INFO  L495      AbstractCegarLoop]: Abstraction has 189054 states and 207482 transitions.
[2022-12-13 22:05:29,866 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:29,866 INFO  L276                IsEmpty]: Start isEmpty. Operand 189054 states and 207482 transitions.
[2022-12-13 22:05:29,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2052
[2022-12-13 22:05:29,993 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:05:29,994 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:05:29,994 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-12-13 22:05:29,994 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:05:29,994 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:05:29,995 INFO  L85        PathProgramCache]: Analyzing trace with hash -439982376, now seen corresponding path program 1 times
[2022-12-13 22:05:29,995 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:05:29,995 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651499693]
[2022-12-13 22:05:29,995 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:05:29,995 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:05:30,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:05:33,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 851 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked.
[2022-12-13 22:05:33,439 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:05:33,440 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651499693]
[2022-12-13 22:05:33,440 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651499693] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:05:33,440 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:05:33,440 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:05:33,440 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267434224]
[2022-12-13 22:05:33,441 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:05:33,443 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:05:33,443 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:05:33,445 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:05:33,445 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:33,445 INFO  L87              Difference]: Start difference. First operand 189054 states and 207482 transitions. Second operand  has 3 states, 3 states have (on average 633.0) internal successors, (1899), 3 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:39,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:05:39,222 INFO  L93              Difference]: Finished difference Result 449435 states and 491792 transitions.
[2022-12-13 22:05:39,222 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:05:39,222 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 633.0) internal successors, (1899), 3 states have internal predecessors, (1899), 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 2051
[2022-12-13 22:05:39,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:05:39,509 INFO  L225             Difference]: With dead ends: 449435
[2022-12-13 22:05:39,509 INFO  L226             Difference]: Without dead ends: 260382
[2022-12-13 22:05:39,602 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:39,602 INFO  L413           NwaCegarLoop]: 1108 mSDtfsCounter, 2048 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5085 mSolverCounterSat, 2037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 7122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2037 IncrementalHoareTripleChecker+Valid, 5085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2022-12-13 22:05:39,603 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 1205 Invalid, 7122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2037 Valid, 5085 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]
[2022-12-13 22:05:39,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 260382 states.
[2022-12-13 22:05:42,012 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 260382 to 251873.
[2022-12-13 22:05:42,116 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251873 states, 251872 states have (on average 1.0839037288781603) internal successors, (273005), 251872 states have internal predecessors, (273005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:42,375 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251873 states to 251873 states and 273005 transitions.
[2022-12-13 22:05:42,375 INFO  L78                 Accepts]: Start accepts. Automaton has 251873 states and 273005 transitions. Word has length 2051
[2022-12-13 22:05:42,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:05:42,375 INFO  L495      AbstractCegarLoop]: Abstraction has 251873 states and 273005 transitions.
[2022-12-13 22:05:42,376 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 633.0) internal successors, (1899), 3 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:42,376 INFO  L276                IsEmpty]: Start isEmpty. Operand 251873 states and 273005 transitions.
[2022-12-13 22:05:42,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2117
[2022-12-13 22:05:42,672 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:05:42,673 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 22:05:42,673 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-12-13 22:05:42,673 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:05:42,674 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:05:42,674 INFO  L85        PathProgramCache]: Analyzing trace with hash 1098832120, now seen corresponding path program 1 times
[2022-12-13 22:05:42,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:05:42,674 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16437060]
[2022-12-13 22:05:42,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:05:42,674 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:05:42,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:05:44,116 INFO  L134       CoverageAnalysis]: Checked inductivity of 652 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-12-13 22:05:44,117 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:05:44,117 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16437060]
[2022-12-13 22:05:44,117 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16437060] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:05:44,117 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:05:44,117 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:05:44,117 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736472543]
[2022-12-13 22:05:44,117 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:05:44,118 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:05:44,118 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:05:44,119 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:05:44,119 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:44,120 INFO  L87              Difference]: Start difference. First operand 251873 states and 273005 transitions. Second operand  has 3 states, 3 states have (on average 694.0) internal successors, (2082), 3 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:50,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:05:50,359 INFO  L93              Difference]: Finished difference Result 513938 states and 556309 transitions.
[2022-12-13 22:05:50,359 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:05:50,359 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 694.0) internal successors, (2082), 3 states have internal predecessors, (2082), 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 2116
[2022-12-13 22:05:50,360 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:05:50,663 INFO  L225             Difference]: With dead ends: 513938
[2022-12-13 22:05:50,663 INFO  L226             Difference]: Without dead ends: 258657
[2022-12-13 22:05:50,758 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:05:50,758 INFO  L413           NwaCegarLoop]: 2841 mSDtfsCounter, 2179 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4834 mSolverCounterSat, 1518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 6352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1518 IncrementalHoareTripleChecker+Valid, 4834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-12-13 22:05:50,759 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 2945 Invalid, 6352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1518 Valid, 4834 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2022-12-13 22:05:50,964 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 258657 states.
[2022-12-13 22:05:52,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 258657 to 251854.
[2022-12-13 22:05:52,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251854 states, 251853 states have (on average 1.0665070497472733) internal successors, (268603), 251853 states have internal predecessors, (268603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:53,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251854 states to 251854 states and 268603 transitions.
[2022-12-13 22:05:53,275 INFO  L78                 Accepts]: Start accepts. Automaton has 251854 states and 268603 transitions. Word has length 2116
[2022-12-13 22:05:53,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:05:53,276 INFO  L495      AbstractCegarLoop]: Abstraction has 251854 states and 268603 transitions.
[2022-12-13 22:05:53,276 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 694.0) internal successors, (2082), 3 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:05:53,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 251854 states and 268603 transitions.
[2022-12-13 22:05:53,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2202
[2022-12-13 22:05:53,423 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:05:53,423 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:05:53,423 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-12-13 22:05:53,424 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:05:53,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:05:53,424 INFO  L85        PathProgramCache]: Analyzing trace with hash -687890785, now seen corresponding path program 1 times
[2022-12-13 22:05:53,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:05:53,424 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932389536]
[2022-12-13 22:05:53,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:05:53,425 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:05:53,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:05:55,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 676 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked.
[2022-12-13 22:05:55,403 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:05:55,403 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932389536]
[2022-12-13 22:05:55,403 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932389536] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:05:55,403 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:05:55,404 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 22:05:55,404 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303601897]
[2022-12-13 22:05:55,404 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:05:55,405 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:05:55,405 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:05:55,406 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:05:55,406 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:05:55,406 INFO  L87              Difference]: Start difference. First operand 251854 states and 268603 transitions. Second operand  has 3 states, 3 states have (on average 694.3333333333334) internal successors, (2083), 2 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:00,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:06:00,860 INFO  L93              Difference]: Finished difference Result 541066 states and 576429 transitions.
[2022-12-13 22:06:00,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:06:00,861 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 694.3333333333334) internal successors, (2083), 2 states have internal predecessors, (2083), 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 2201
[2022-12-13 22:06:00,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:06:01,287 INFO  L225             Difference]: With dead ends: 541066
[2022-12-13 22:06:01,287 INFO  L226             Difference]: Without dead ends: 287476
[2022-12-13 22:06:01,325 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:06:01,325 INFO  L413           NwaCegarLoop]: 1828 mSDtfsCounter, 1709 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 1300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 5755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-12-13 22:06:01,325 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 2002 Invalid, 5755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1300 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2022-12-13 22:06:01,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 287476 states.
[2022-12-13 22:06:03,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 287476 to 280683.
[2022-12-13 22:06:03,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 280683 states, 280682 states have (on average 1.0332618408020464) internal successors, (290018), 280682 states have internal predecessors, (290018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:04,136 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 280683 states to 280683 states and 290018 transitions.
[2022-12-13 22:06:04,136 INFO  L78                 Accepts]: Start accepts. Automaton has 280683 states and 290018 transitions. Word has length 2201
[2022-12-13 22:06:04,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:06:04,136 INFO  L495      AbstractCegarLoop]: Abstraction has 280683 states and 290018 transitions.
[2022-12-13 22:06:04,137 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 694.3333333333334) internal successors, (2083), 2 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:04,137 INFO  L276                IsEmpty]: Start isEmpty. Operand 280683 states and 290018 transitions.
[2022-12-13 22:06:04,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2220
[2022-12-13 22:06:04,425 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:06:04,425 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2022-12-13 22:06:04,425 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-12-13 22:06:04,426 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:06:04,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:06:04,426 INFO  L85        PathProgramCache]: Analyzing trace with hash 994627213, now seen corresponding path program 1 times
[2022-12-13 22:06:04,427 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:06:04,427 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105458666]
[2022-12-13 22:06:04,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:06:04,427 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:06:04,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:06:06,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 729 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked.
[2022-12-13 22:06:06,694 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:06:06,694 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105458666]
[2022-12-13 22:06:06,694 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105458666] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:06:06,694 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:06:06,694 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:06:06,694 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777331378]
[2022-12-13 22:06:06,694 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:06:06,695 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 22:06:06,696 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:06:06,697 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 22:06:06,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 22:06:06,697 INFO  L87              Difference]: Start difference. First operand 280683 states and 290018 transitions. Second operand  has 4 states, 4 states have (on average 525.25) internal successors, (2101), 3 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:12,614 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:06:12,614 INFO  L93              Difference]: Finished difference Result 564789 states and 583577 transitions.
[2022-12-13 22:06:12,614 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 22:06:12,614 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 525.25) internal successors, (2101), 3 states have internal predecessors, (2101), 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 2219
[2022-12-13 22:06:12,615 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:06:12,930 INFO  L225             Difference]: With dead ends: 564789
[2022-12-13 22:06:12,930 INFO  L226             Difference]: Without dead ends: 282401
[2022-12-13 22:06:13,031 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:06:13,032 INFO  L413           NwaCegarLoop]: 858 mSDtfsCounter, 3934 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 8436 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3934 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 9036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 8436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2022-12-13 22:06:13,032 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3934 Valid, 1122 Invalid, 9036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 8436 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2022-12-13 22:06:13,248 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 282401 states.
[2022-12-13 22:06:15,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 282401 to 280675.
[2022-12-13 22:06:15,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 280675 states, 280674 states have (on average 1.0332271603354781) internal successors, (290000), 280674 states have internal predecessors, (290000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:15,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 280675 states to 280675 states and 290000 transitions.
[2022-12-13 22:06:15,910 INFO  L78                 Accepts]: Start accepts. Automaton has 280675 states and 290000 transitions. Word has length 2219
[2022-12-13 22:06:15,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:06:15,911 INFO  L495      AbstractCegarLoop]: Abstraction has 280675 states and 290000 transitions.
[2022-12-13 22:06:15,911 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 525.25) internal successors, (2101), 3 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:15,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 280675 states and 290000 transitions.
[2022-12-13 22:06:16,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2267
[2022-12-13 22:06:16,061 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:06:16,062 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 22:06:16,062 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-12-13 22:06:16,062 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:06:16,062 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:06:16,063 INFO  L85        PathProgramCache]: Analyzing trace with hash -1914520800, now seen corresponding path program 1 times
[2022-12-13 22:06:16,063 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:06:16,063 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293567379]
[2022-12-13 22:06:16,063 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:06:16,063 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:06:16,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:06:18,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 1177 backedges. 998 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 22:06:18,941 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:06:18,942 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293567379]
[2022-12-13 22:06:18,942 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293567379] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:06:18,942 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:06:18,942 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:06:18,942 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764579586]
[2022-12-13 22:06:18,942 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:06:18,944 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:06:18,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:06:18,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:06:18,946 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:06:18,946 INFO  L87              Difference]: Start difference. First operand 280675 states and 290000 transitions. Second operand  has 3 states, 3 states have (on average 708.0) internal successors, (2124), 3 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:23,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:06:23,101 INFO  L93              Difference]: Finished difference Result 585125 states and 604303 transitions.
[2022-12-13 22:06:23,102 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:06:23,102 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 708.0) internal successors, (2124), 3 states have internal predecessors, (2124), 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 2266
[2022-12-13 22:06:23,102 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:06:23,453 INFO  L225             Difference]: With dead ends: 585125
[2022-12-13 22:06:23,453 INFO  L226             Difference]: Without dead ends: 304452
[2022-12-13 22:06:23,562 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:06:23,562 INFO  L413           NwaCegarLoop]: 1235 mSDtfsCounter, 1522 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 4688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2022-12-13 22:06:23,563 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1464 Invalid, 4688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2022-12-13 22:06:23,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 304452 states.
[2022-12-13 22:06:25,971 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 304452 to 289168.
[2022-12-13 22:06:26,097 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 289168 states, 289167 states have (on average 1.0328668209028) internal successors, (298671), 289167 states have internal predecessors, (298671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:26,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 289168 states to 289168 states and 298671 transitions.
[2022-12-13 22:06:26,501 INFO  L78                 Accepts]: Start accepts. Automaton has 289168 states and 298671 transitions. Word has length 2266
[2022-12-13 22:06:26,501 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:06:26,502 INFO  L495      AbstractCegarLoop]: Abstraction has 289168 states and 298671 transitions.
[2022-12-13 22:06:26,502 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 708.0) internal successors, (2124), 3 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:26,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 289168 states and 298671 transitions.
[2022-12-13 22:06:26,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2296
[2022-12-13 22:06:26,787 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:06:26,788 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 22:06:26,788 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-12-13 22:06:26,788 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:06:26,788 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:06:26,789 INFO  L85        PathProgramCache]: Analyzing trace with hash 1762020054, now seen corresponding path program 1 times
[2022-12-13 22:06:26,789 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:06:26,789 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23727259]
[2022-12-13 22:06:26,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:06:26,789 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:06:27,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:06:28,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 1513 backedges. 1215 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked.
[2022-12-13 22:06:28,816 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:06:28,817 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23727259]
[2022-12-13 22:06:28,817 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23727259] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:06:28,817 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:06:28,817 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:06:28,817 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943335661]
[2022-12-13 22:06:28,817 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:06:28,818 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:06:28,818 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:06:28,819 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:06:28,819 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:06:28,820 INFO  L87              Difference]: Start difference. First operand 289168 states and 298671 transitions. Second operand  has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:33,835 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:06:33,835 INFO  L93              Difference]: Finished difference Result 664926 states and 687770 transitions.
[2022-12-13 22:06:33,836 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:06:33,836 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 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 2295
[2022-12-13 22:06:33,836 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:06:34,211 INFO  L225             Difference]: With dead ends: 664926
[2022-12-13 22:06:34,211 INFO  L226             Difference]: Without dead ends: 375760
[2022-12-13 22:06:34,281 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:06:34,282 INFO  L413           NwaCegarLoop]: 2897 mSDtfsCounter, 1756 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 4121 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 4890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 4121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 22:06:34,282 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 3190 Invalid, 4890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 4121 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 22:06:34,698 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 375760 states.
[2022-12-13 22:06:37,523 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 375760 to 351981.
[2022-12-13 22:06:37,657 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 351981 states, 351980 states have (on average 1.0287857264617308) internal successors, (362112), 351980 states have internal predecessors, (362112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:38,147 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 351981 states to 351981 states and 362112 transitions.
[2022-12-13 22:06:38,147 INFO  L78                 Accepts]: Start accepts. Automaton has 351981 states and 362112 transitions. Word has length 2295
[2022-12-13 22:06:38,148 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:06:38,148 INFO  L495      AbstractCegarLoop]: Abstraction has 351981 states and 362112 transitions.
[2022-12-13 22:06:38,148 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:38,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 351981 states and 362112 transitions.
[2022-12-13 22:06:38,390 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2563
[2022-12-13 22:06:38,390 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:06:38,391 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2022-12-13 22:06:38,391 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-12-13 22:06:38,391 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:06:38,392 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:06:38,392 INFO  L85        PathProgramCache]: Analyzing trace with hash 1398071562, now seen corresponding path program 1 times
[2022-12-13 22:06:38,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:06:38,392 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648151924]
[2022-12-13 22:06:38,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:06:38,393 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:06:38,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:06:41,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 2627 backedges. 1582 proven. 0 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked.
[2022-12-13 22:06:41,064 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:06:41,064 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648151924]
[2022-12-13 22:06:41,064 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648151924] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:06:41,064 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:06:41,064 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:06:41,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106025773]
[2022-12-13 22:06:41,065 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:06:41,066 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:06:41,066 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:06:41,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:06:41,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:06:41,067 INFO  L87              Difference]: Start difference. First operand 351981 states and 362112 transitions. Second operand  has 3 states, 3 states have (on average 642.6666666666666) internal successors, (1928), 3 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:46,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:06:46,879 INFO  L93              Difference]: Finished difference Result 778682 states and 801235 transitions.
[2022-12-13 22:06:46,879 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:06:46,879 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 642.6666666666666) internal successors, (1928), 3 states have internal predecessors, (1928), 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 2562
[2022-12-13 22:06:46,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:06:47,345 INFO  L225             Difference]: With dead ends: 778682
[2022-12-13 22:06:47,345 INFO  L226             Difference]: Without dead ends: 421595
[2022-12-13 22:06:47,444 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:06:47,444 INFO  L413           NwaCegarLoop]: 2923 mSDtfsCounter, 1746 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 4508 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 4508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 22:06:47,445 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 3140 Invalid, 5198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 4508 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 22:06:47,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 421595 states.
[2022-12-13 22:06:51,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 421595 to 411397.
[2022-12-13 22:06:51,444 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411397 states, 411396 states have (on average 1.0232622582621125) internal successors, (420966), 411396 states have internal predecessors, (420966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:51,844 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411397 states to 411397 states and 420966 transitions.
[2022-12-13 22:06:51,844 INFO  L78                 Accepts]: Start accepts. Automaton has 411397 states and 420966 transitions. Word has length 2562
[2022-12-13 22:06:51,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:06:51,845 INFO  L495      AbstractCegarLoop]: Abstraction has 411397 states and 420966 transitions.
[2022-12-13 22:06:51,845 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 642.6666666666666) internal successors, (1928), 3 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:06:51,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 411397 states and 420966 transitions.
[2022-12-13 22:06:52,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2574
[2022-12-13 22:06:52,273 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:06:52,274 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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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]
[2022-12-13 22:06:52,274 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-12-13 22:06:52,274 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:06:52,275 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:06:52,275 INFO  L85        PathProgramCache]: Analyzing trace with hash -246945499, now seen corresponding path program 1 times
[2022-12-13 22:06:52,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:06:52,275 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250730970]
[2022-12-13 22:06:52,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:06:52,275 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:06:52,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:06:55,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 1849 backedges. 1297 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked.
[2022-12-13 22:06:55,406 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:06:55,406 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250730970]
[2022-12-13 22:06:55,406 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250730970] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:06:55,406 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:06:55,407 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:06:55,407 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218672833]
[2022-12-13 22:06:55,407 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:06:55,409 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:06:55,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:06:55,412 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:06:55,412 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:06:55,412 INFO  L87              Difference]: Start difference. First operand 411397 states and 420966 transitions. Second operand  has 3 states, 3 states have (on average 710.3333333333334) internal successors, (2131), 3 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:01,260 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:07:01,260 INFO  L93              Difference]: Finished difference Result 841529 states and 860818 transitions.
[2022-12-13 22:07:01,261 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:07:01,261 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 710.3333333333334) internal successors, (2131), 3 states have internal predecessors, (2131), 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 2573
[2022-12-13 22:07:01,261 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:07:01,731 INFO  L225             Difference]: With dead ends: 841529
[2022-12-13 22:07:01,731 INFO  L226             Difference]: Without dead ends: 428424
[2022-12-13 22:07:01,814 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:07:01,815 INFO  L413           NwaCegarLoop]: 1274 mSDtfsCounter, 1704 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 5092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-12-13 22:07:01,815 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 1468 Invalid, 5092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-12-13 22:07:02,124 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 428424 states.
[2022-12-13 22:07:05,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 428424 to 411386.
[2022-12-13 22:07:05,392 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411386 states, 411385 states have (on average 1.0215977733753054) internal successors, (420270), 411385 states have internal predecessors, (420270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:05,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411386 states to 411386 states and 420270 transitions.
[2022-12-13 22:07:05,956 INFO  L78                 Accepts]: Start accepts. Automaton has 411386 states and 420270 transitions. Word has length 2573
[2022-12-13 22:07:05,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:07:05,957 INFO  L495      AbstractCegarLoop]: Abstraction has 411386 states and 420270 transitions.
[2022-12-13 22:07:05,957 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 710.3333333333334) internal successors, (2131), 3 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:05,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 411386 states and 420270 transitions.
[2022-12-13 22:07:06,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2575
[2022-12-13 22:07:06,387 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:07:06,388 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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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]
[2022-12-13 22:07:06,388 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-12-13 22:07:06,388 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:07:06,389 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:07:06,389 INFO  L85        PathProgramCache]: Analyzing trace with hash -121395879, now seen corresponding path program 1 times
[2022-12-13 22:07:06,389 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:07:06,389 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181118350]
[2022-12-13 22:07:06,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:07:06,390 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:07:06,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:07:11,566 INFO  L134       CoverageAnalysis]: Checked inductivity of 2088 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked.
[2022-12-13 22:07:11,566 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:07:11,566 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181118350]
[2022-12-13 22:07:11,566 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181118350] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:07:11,566 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:07:11,566 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:07:11,567 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630565390]
[2022-12-13 22:07:11,567 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:07:11,568 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:07:11,568 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:07:11,569 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:07:11,569 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:07:11,569 INFO  L87              Difference]: Start difference. First operand 411386 states and 420270 transitions. Second operand  has 3 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:16,267 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:07:16,267 INFO  L93              Difference]: Finished difference Result 822770 states and 840538 transitions.
[2022-12-13 22:07:16,268 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:07:16,268 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 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 2574
[2022-12-13 22:07:16,269 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:07:16,742 INFO  L225             Difference]: With dead ends: 822770
[2022-12-13 22:07:16,743 INFO  L226             Difference]: Without dead ends: 411386
[2022-12-13 22:07:16,866 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:07:16,866 INFO  L413           NwaCegarLoop]: 2567 mSDtfsCounter, 446 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4097 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2022-12-13 22:07:16,867 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 2749 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4097 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2022-12-13 22:07:17,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 411386 states.
[2022-12-13 22:07:20,344 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 411386 to 411385.
[2022-12-13 22:07:20,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411385 states, 411384 states have (on average 1.0203216459560898) internal successors, (419744), 411384 states have internal predecessors, (419744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:21,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411385 states to 411385 states and 419744 transitions.
[2022-12-13 22:07:21,138 INFO  L78                 Accepts]: Start accepts. Automaton has 411385 states and 419744 transitions. Word has length 2574
[2022-12-13 22:07:21,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:07:21,141 INFO  L495      AbstractCegarLoop]: Abstraction has 411385 states and 419744 transitions.
[2022-12-13 22:07:21,141 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:21,141 INFO  L276                IsEmpty]: Start isEmpty. Operand 411385 states and 419744 transitions.
[2022-12-13 22:07:21,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2632
[2022-12-13 22:07:21,543 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:07:21,544 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:07:21,544 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-12-13 22:07:21,544 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:07:21,544 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:07:21,545 INFO  L85        PathProgramCache]: Analyzing trace with hash -905432333, now seen corresponding path program 1 times
[2022-12-13 22:07:21,545 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:07:21,545 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377562456]
[2022-12-13 22:07:21,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:07:21,545 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:07:22,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:07:23,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 2032 backedges. 1419 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked.
[2022-12-13 22:07:23,670 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:07:23,670 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377562456]
[2022-12-13 22:07:23,670 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377562456] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:07:23,670 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:07:23,671 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:07:23,671 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876742850]
[2022-12-13 22:07:23,671 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:07:23,672 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:07:23,672 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:07:23,674 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:07:23,674 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:07:23,674 INFO  L87              Difference]: Start difference. First operand 411385 states and 419744 transitions. Second operand  has 3 states, 3 states have (on average 713.3333333333334) internal successors, (2140), 3 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:28,962 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:07:28,962 INFO  L93              Difference]: Finished difference Result 821071 states and 837727 transitions.
[2022-12-13 22:07:28,963 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:07:28,963 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 713.3333333333334) internal successors, (2140), 3 states have internal predecessors, (2140), 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 2631
[2022-12-13 22:07:28,963 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:07:29,464 INFO  L225             Difference]: With dead ends: 821071
[2022-12-13 22:07:29,465 INFO  L226             Difference]: Without dead ends: 409688
[2022-12-13 22:07:29,588 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:07:29,588 INFO  L413           NwaCegarLoop]: 710 mSDtfsCounter, 1756 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 4312 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 4936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 4312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2022-12-13 22:07:29,589 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 850 Invalid, 4936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 4312 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2022-12-13 22:07:29,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 409688 states.
[2022-12-13 22:07:32,902 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 409688 to 404586.
[2022-12-13 22:07:33,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 404586 states, 404585 states have (on average 1.0162166170273244) internal successors, (411146), 404585 states have internal predecessors, (411146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:33,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 404586 states to 404586 states and 411146 transitions.
[2022-12-13 22:07:33,644 INFO  L78                 Accepts]: Start accepts. Automaton has 404586 states and 411146 transitions. Word has length 2631
[2022-12-13 22:07:33,644 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:07:33,644 INFO  L495      AbstractCegarLoop]: Abstraction has 404586 states and 411146 transitions.
[2022-12-13 22:07:33,645 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 713.3333333333334) internal successors, (2140), 3 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:33,645 INFO  L276                IsEmpty]: Start isEmpty. Operand 404586 states and 411146 transitions.
[2022-12-13 22:07:33,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2662
[2022-12-13 22:07:33,896 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:07:33,896 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:07:33,897 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-12-13 22:07:33,897 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:07:33,897 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:07:33,898 INFO  L85        PathProgramCache]: Analyzing trace with hash -328711490, now seen corresponding path program 1 times
[2022-12-13 22:07:33,898 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:07:33,898 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347460848]
[2022-12-13 22:07:33,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:07:33,898 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:07:34,363 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:07:36,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 1281 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked.
[2022-12-13 22:07:36,079 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:07:36,080 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347460848]
[2022-12-13 22:07:36,080 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347460848] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:07:36,080 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:07:36,080 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:07:36,080 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106224039]
[2022-12-13 22:07:36,080 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:07:36,081 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:07:36,081 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:07:36,082 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:07:36,082 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:07:36,083 INFO  L87              Difference]: Start difference. First operand 404586 states and 411146 transitions. Second operand  has 3 states, 3 states have (on average 734.3333333333334) internal successors, (2203), 3 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:41,369 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:07:41,369 INFO  L93              Difference]: Finished difference Result 809173 states and 822294 transitions.
[2022-12-13 22:07:41,370 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:07:41,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 734.3333333333334) internal successors, (2203), 3 states have internal predecessors, (2203), 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 2661
[2022-12-13 22:07:41,370 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:07:41,971 INFO  L225             Difference]: With dead ends: 809173
[2022-12-13 22:07:41,971 INFO  L226             Difference]: Without dead ends: 404589
[2022-12-13 22:07:42,083 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:07:42,084 INFO  L413           NwaCegarLoop]: 2773 mSDtfsCounter, 1753 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 4327 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 4660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 4327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-12-13 22:07:42,084 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 3031 Invalid, 4660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 4327 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-12-13 22:07:42,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 404589 states.
[2022-12-13 22:07:45,643 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 404589 to 404586.
[2022-12-13 22:07:45,793 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 404586 states, 404585 states have (on average 1.0129614296130602) internal successors, (409829), 404585 states have internal predecessors, (409829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:46,375 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 404586 states to 404586 states and 409829 transitions.
[2022-12-13 22:07:46,375 INFO  L78                 Accepts]: Start accepts. Automaton has 404586 states and 409829 transitions. Word has length 2661
[2022-12-13 22:07:46,375 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:07:46,375 INFO  L495      AbstractCegarLoop]: Abstraction has 404586 states and 409829 transitions.
[2022-12-13 22:07:46,376 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 734.3333333333334) internal successors, (2203), 3 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:07:46,376 INFO  L276                IsEmpty]: Start isEmpty. Operand 404586 states and 409829 transitions.
[2022-12-13 22:07:46,614 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2694
[2022-12-13 22:07:46,614 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:07:46,615 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 22:07:46,615 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-12-13 22:07:46,615 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:07:46,616 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:07:46,616 INFO  L85        PathProgramCache]: Analyzing trace with hash -1709779584, now seen corresponding path program 1 times
[2022-12-13 22:07:46,616 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:07:46,616 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933109414]
[2022-12-13 22:07:46,616 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:07:46,616 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:07:47,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:07:53,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 2708 backedges. 2410 proven. 119 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2022-12-13 22:07:53,823 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:07:53,823 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933109414]
[2022-12-13 22:07:53,823 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933109414] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 22:07:53,823 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371772862]
[2022-12-13 22:07:53,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:07:53,824 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 22:07:53,824 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 22:07:53,825 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 22:07:53,826 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-12-13 22:07:54,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:07:54,660 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 22:07:54,691 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 22:07:54,898 INFO  L134       CoverageAnalysis]: Checked inductivity of 2708 backedges. 1549 proven. 0 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked.
[2022-12-13 22:07:54,898 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 22:07:54,898 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [371772862] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:07:54,899 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 22:07:54,899 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 22:07:54,900 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553039793]
[2022-12-13 22:07:54,900 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:07:54,902 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:07:54,902 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:07:54,904 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:07:54,904 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-12-13 22:07:54,905 INFO  L87              Difference]: Start difference. First operand 404586 states and 409829 transitions. Second operand  has 3 states, 3 states have (on average 696.6666666666666) internal successors, (2090), 3 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:00,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:08:00,220 INFO  L93              Difference]: Finished difference Result 812578 states and 823082 transitions.
[2022-12-13 22:08:00,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:08:00,221 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 696.6666666666666) internal successors, (2090), 3 states have internal predecessors, (2090), 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 2693
[2022-12-13 22:08:00,221 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:08:00,709 INFO  L225             Difference]: With dead ends: 812578
[2022-12-13 22:08:00,710 INFO  L226             Difference]: Without dead ends: 407993
[2022-12-13 22:08:00,837 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2698 GetRequests, 2692 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-12-13 22:08:00,837 INFO  L413           NwaCegarLoop]: 2837 mSDtfsCounter, 1685 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 4458 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 4458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-12-13 22:08:00,837 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 3043 Invalid, 5028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 4458 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-12-13 22:08:01,174 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 407993 states.
[2022-12-13 22:08:04,246 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 407993 to 402880.
[2022-12-13 22:08:04,416 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 402880 states, 402879 states have (on average 1.010201574169912) internal successors, (406989), 402879 states have internal predecessors, (406989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:05,000 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 402880 states to 402880 states and 406989 transitions.
[2022-12-13 22:08:05,001 INFO  L78                 Accepts]: Start accepts. Automaton has 402880 states and 406989 transitions. Word has length 2693
[2022-12-13 22:08:05,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:08:05,002 INFO  L495      AbstractCegarLoop]: Abstraction has 402880 states and 406989 transitions.
[2022-12-13 22:08:05,002 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 696.6666666666666) internal successors, (2090), 3 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:05,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 402880 states and 406989 transitions.
[2022-12-13 22:08:05,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2811
[2022-12-13 22:08:05,260 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:08:05,261 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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]
[2022-12-13 22:08:05,267 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-12-13 22:08:05,461 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2022-12-13 22:08:05,463 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:08:05,463 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:08:05,465 INFO  L85        PathProgramCache]: Analyzing trace with hash 983767569, now seen corresponding path program 1 times
[2022-12-13 22:08:05,465 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:08:05,466 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198217126]
[2022-12-13 22:08:05,467 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:08:05,467 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:08:05,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:08:09,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 3665 backedges. 2682 proven. 0 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked.
[2022-12-13 22:08:09,335 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:08:09,335 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198217126]
[2022-12-13 22:08:09,335 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198217126] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:08:09,335 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:08:09,336 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:08:09,336 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371708290]
[2022-12-13 22:08:09,336 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:08:09,337 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:08:09,337 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:08:09,338 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:08:09,338 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:08:09,339 INFO  L87              Difference]: Start difference. First operand 402880 states and 406989 transitions. Second operand  has 3 states, 3 states have (on average 710.0) internal successors, (2130), 3 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:14,071 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:08:14,072 INFO  L93              Difference]: Finished difference Result 807458 states and 815682 transitions.
[2022-12-13 22:08:14,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:08:14,072 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 710.0) internal successors, (2130), 3 states have internal predecessors, (2130), 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 2810
[2022-12-13 22:08:14,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:08:14,540 INFO  L225             Difference]: With dead ends: 807458
[2022-12-13 22:08:14,540 INFO  L226             Difference]: Without dead ends: 402878
[2022-12-13 22:08:14,678 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:08:14,679 INFO  L413           NwaCegarLoop]: 2688 mSDtfsCounter, 1686 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 4359 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 4542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 4359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time
[2022-12-13 22:08:14,679 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 2889 Invalid, 4542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 4359 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time]
[2022-12-13 22:08:15,019 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 402878 states.
[2022-12-13 22:08:18,052 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 402878 to 399474.
[2022-12-13 22:08:18,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 399474 states, 399473 states have (on average 1.0098429681104855) internal successors, (403405), 399473 states have internal predecessors, (403405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:18,918 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 399474 states to 399474 states and 403405 transitions.
[2022-12-13 22:08:18,918 INFO  L78                 Accepts]: Start accepts. Automaton has 399474 states and 403405 transitions. Word has length 2810
[2022-12-13 22:08:18,919 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:08:18,919 INFO  L495      AbstractCegarLoop]: Abstraction has 399474 states and 403405 transitions.
[2022-12-13 22:08:18,920 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 710.0) internal successors, (2130), 3 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:18,920 INFO  L276                IsEmpty]: Start isEmpty. Operand 399474 states and 403405 transitions.
[2022-12-13 22:08:19,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2822
[2022-12-13 22:08:19,187 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:08:19,188 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:08:19,188 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-12-13 22:08:19,189 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:08:19,189 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:08:19,189 INFO  L85        PathProgramCache]: Analyzing trace with hash -570787962, now seen corresponding path program 1 times
[2022-12-13 22:08:19,189 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:08:19,189 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437275923]
[2022-12-13 22:08:19,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:08:19,190 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:08:19,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:08:22,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 2523 backedges. 1287 proven. 0 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked.
[2022-12-13 22:08:22,080 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:08:22,080 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437275923]
[2022-12-13 22:08:22,080 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437275923] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:08:22,080 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:08:22,080 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:08:22,080 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988548291]
[2022-12-13 22:08:22,080 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:08:22,082 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:08:22,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:08:22,083 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:08:22,083 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:08:22,083 INFO  L87              Difference]: Start difference. First operand 399474 states and 403405 transitions. Second operand  has 3 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:27,529 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:08:27,529 INFO  L93              Difference]: Finished difference Result 788740 states and 796437 transitions.
[2022-12-13 22:08:27,530 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:08:27,530 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 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 2821
[2022-12-13 22:08:27,530 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:08:28,056 INFO  L225             Difference]: With dead ends: 788740
[2022-12-13 22:08:28,057 INFO  L226             Difference]: Without dead ends: 389266
[2022-12-13 22:08:28,162 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:08:28,163 INFO  L413           NwaCegarLoop]: 2521 mSDtfsCounter, 1972 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 4345 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 4856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 22:08:28,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 2750 Invalid, 4856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 4345 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 22:08:28,448 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 389266 states.
[2022-12-13 22:08:31,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 389266 to 384169.
[2022-12-13 22:08:31,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 384169 states, 384168 states have (on average 1.0072260052893525) internal successors, (386944), 384168 states have internal predecessors, (386944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:31,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 384169 states to 384169 states and 386944 transitions.
[2022-12-13 22:08:31,830 INFO  L78                 Accepts]: Start accepts. Automaton has 384169 states and 386944 transitions. Word has length 2821
[2022-12-13 22:08:31,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:08:31,831 INFO  L495      AbstractCegarLoop]: Abstraction has 384169 states and 386944 transitions.
[2022-12-13 22:08:31,832 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:31,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 384169 states and 386944 transitions.
[2022-12-13 22:08:32,106 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3068
[2022-12-13 22:08:32,106 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:08:32,107 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:08:32,107 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-12-13 22:08:32,107 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:08:32,107 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:08:32,107 INFO  L85        PathProgramCache]: Analyzing trace with hash 1704489827, now seen corresponding path program 1 times
[2022-12-13 22:08:32,108 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:08:32,108 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069785536]
[2022-12-13 22:08:32,108 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:08:32,108 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:08:32,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:08:38,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 4268 backedges. 3060 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked.
[2022-12-13 22:08:38,355 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:08:38,355 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069785536]
[2022-12-13 22:08:38,355 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069785536] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:08:38,355 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:08:38,355 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:08:38,355 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450784446]
[2022-12-13 22:08:38,355 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:08:38,358 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:08:38,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:08:38,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:08:38,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:08:38,360 INFO  L87              Difference]: Start difference. First operand 384169 states and 386944 transitions. Second operand  has 3 states, 3 states have (on average 748.0) internal successors, (2244), 3 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:44,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:08:44,018 INFO  L93              Difference]: Finished difference Result 848145 states and 854274 transitions.
[2022-12-13 22:08:44,018 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:08:44,018 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 748.0) internal successors, (2244), 3 states have internal predecessors, (2244), 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 3067
[2022-12-13 22:08:44,019 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:08:44,564 INFO  L225             Difference]: With dead ends: 848145
[2022-12-13 22:08:44,564 INFO  L226             Difference]: Without dead ends: 462275
[2022-12-13 22:08:44,730 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:08:44,730 INFO  L413           NwaCegarLoop]: 2327 mSDtfsCounter, 1863 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4294 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 5072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2022-12-13 22:08:44,731 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 2390 Invalid, 5072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4294 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2022-12-13 22:08:45,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 462275 states.
[2022-12-13 22:08:48,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 462275 to 440188.
[2022-12-13 22:08:48,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 440188 states, 440187 states have (on average 1.0063859223466392) internal successors, (442998), 440187 states have internal predecessors, (442998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:49,465 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 440188 states to 440188 states and 442998 transitions.
[2022-12-13 22:08:49,465 INFO  L78                 Accepts]: Start accepts. Automaton has 440188 states and 442998 transitions. Word has length 3067
[2022-12-13 22:08:49,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:08:49,466 INFO  L495      AbstractCegarLoop]: Abstraction has 440188 states and 442998 transitions.
[2022-12-13 22:08:49,466 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 748.0) internal successors, (2244), 3 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:08:49,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 440188 states and 442998 transitions.
[2022-12-13 22:08:49,997 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3288
[2022-12-13 22:08:49,998 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:08:49,999 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:08:49,999 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-12-13 22:08:49,999 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:08:49,999 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:08:50,000 INFO  L85        PathProgramCache]: Analyzing trace with hash -112385071, now seen corresponding path program 1 times
[2022-12-13 22:08:50,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:08:50,000 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458369896]
[2022-12-13 22:08:50,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:08:50,000 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:08:50,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:09:04,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 4979 backedges. 2647 proven. 578 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked.
[2022-12-13 22:09:04,270 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:09:04,270 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458369896]
[2022-12-13 22:09:04,270 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458369896] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 22:09:04,270 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14284467]
[2022-12-13 22:09:04,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:09:04,271 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 22:09:04,271 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 22:09:04,271 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 22:09:04,272 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-12-13 22:09:05,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:09:05,421 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3733 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-12-13 22:09:05,442 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 22:09:05,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 4979 backedges. 2347 proven. 0 refuted. 0 times theorem prover too weak. 2632 trivial. 0 not checked.
[2022-12-13 22:09:05,738 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 22:09:05,738 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [14284467] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:09:05,738 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 22:09:05,739 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2022-12-13 22:09:05,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562107324]
[2022-12-13 22:09:05,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:09:05,742 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:09:05,742 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:09:05,743 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:09:05,744 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2022-12-13 22:09:05,744 INFO  L87              Difference]: Start difference. First operand 440188 states and 442998 transitions. Second operand  has 3 states, 3 states have (on average 757.0) internal successors, (2271), 3 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:11,283 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:09:11,283 INFO  L93              Difference]: Finished difference Result 893969 states and 899679 transitions.
[2022-12-13 22:09:11,283 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:09:11,284 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 757.0) internal successors, (2271), 3 states have internal predecessors, (2271), 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 3287
[2022-12-13 22:09:11,285 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:09:11,855 INFO  L225             Difference]: With dead ends: 893969
[2022-12-13 22:09:11,855 INFO  L226             Difference]: Without dead ends: 452085
[2022-12-13 22:09:12,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3296 GetRequests, 3289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2022-12-13 22:09:12,083 INFO  L413           NwaCegarLoop]: 2871 mSDtfsCounter, 1596 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 4437 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-12-13 22:09:12,083 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 3051 Invalid, 4534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4437 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-12-13 22:09:12,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 452085 states.
[2022-12-13 22:09:16,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 452085 to 452076.
[2022-12-13 22:09:16,495 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 452076 states, 452075 states have (on average 1.0062334789581375) internal successors, (454893), 452075 states have internal predecessors, (454893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:16,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 452076 states to 452076 states and 454893 transitions.
[2022-12-13 22:09:16,994 INFO  L78                 Accepts]: Start accepts. Automaton has 452076 states and 454893 transitions. Word has length 3287
[2022-12-13 22:09:16,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:09:16,995 INFO  L495      AbstractCegarLoop]: Abstraction has 452076 states and 454893 transitions.
[2022-12-13 22:09:16,996 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 757.0) internal successors, (2271), 3 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:16,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 452076 states and 454893 transitions.
[2022-12-13 22:09:17,325 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3352
[2022-12-13 22:09:17,325 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:09:17,326 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:09:17,333 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-12-13 22:09:17,527 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06918985-dd53-421b-9c3b-7b664cf24fb2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2022-12-13 22:09:17,529 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:09:17,530 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:09:17,532 INFO  L85        PathProgramCache]: Analyzing trace with hash -459882964, now seen corresponding path program 1 times
[2022-12-13 22:09:17,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:09:17,532 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151382139]
[2022-12-13 22:09:17,533 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:09:17,534 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:09:17,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:09:22,320 INFO  L134       CoverageAnalysis]: Checked inductivity of 3879 backedges. 3085 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked.
[2022-12-13 22:09:22,321 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:09:22,321 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151382139]
[2022-12-13 22:09:22,321 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151382139] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:09:22,321 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:09:22,322 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:09:22,322 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438842078]
[2022-12-13 22:09:22,322 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:09:22,328 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:09:22,328 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:09:22,330 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:09:22,331 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:09:22,331 INFO  L87              Difference]: Start difference. First operand 452076 states and 454893 transitions. Second operand  has 3 states, 3 states have (on average 899.0) internal successors, (2697), 3 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:28,093 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:09:28,093 INFO  L93              Difference]: Finished difference Result 965295 states and 971503 transitions.
[2022-12-13 22:09:28,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:09:28,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 899.0) internal successors, (2697), 3 states have internal predecessors, (2697), 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 3351
[2022-12-13 22:09:28,094 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:09:28,682 INFO  L225             Difference]: With dead ends: 965295
[2022-12-13 22:09:28,682 INFO  L226             Difference]: Without dead ends: 513221
[2022-12-13 22:09:28,828 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:09:28,829 INFO  L413           NwaCegarLoop]: 2765 mSDtfsCounter, 1120 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4534 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 5009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 22:09:28,829 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2914 Invalid, 5009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 4534 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 22:09:29,234 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 513221 states.
[2022-12-13 22:09:33,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 513221 to 486008.
[2022-12-13 22:09:33,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 486008 states, 486007 states have (on average 1.0057776945599548) internal successors, (488815), 486007 states have internal predecessors, (488815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:33,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 486008 states to 486008 states and 488815 transitions.
[2022-12-13 22:09:33,739 INFO  L78                 Accepts]: Start accepts. Automaton has 486008 states and 488815 transitions. Word has length 3351
[2022-12-13 22:09:33,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:09:33,740 INFO  L495      AbstractCegarLoop]: Abstraction has 486008 states and 488815 transitions.
[2022-12-13 22:09:33,740 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 899.0) internal successors, (2697), 3 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:33,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 486008 states and 488815 transitions.
[2022-12-13 22:09:34,270 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3369
[2022-12-13 22:09:34,270 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:09:34,271 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 22:09:34,271 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-12-13 22:09:34,271 INFO  L420      AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:09:34,271 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:09:34,272 INFO  L85        PathProgramCache]: Analyzing trace with hash 1468143576, now seen corresponding path program 1 times
[2022-12-13 22:09:34,272 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:09:34,272 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268895374]
[2022-12-13 22:09:34,272 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:09:34,272 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:09:34,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:09:39,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 5145 backedges. 2970 proven. 0 refuted. 0 times theorem prover too weak. 2175 trivial. 0 not checked.
[2022-12-13 22:09:39,538 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:09:39,538 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268895374]
[2022-12-13 22:09:39,539 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268895374] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:09:39,539 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:09:39,539 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 22:09:39,539 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888741552]
[2022-12-13 22:09:39,539 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:09:39,540 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 22:09:39,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:09:39,542 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 22:09:39,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 22:09:39,542 INFO  L87              Difference]: Start difference. First operand 486008 states and 488815 transitions. Second operand  has 3 states, 3 states have (on average 853.0) internal successors, (2559), 3 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:45,162 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:09:45,162 INFO  L93              Difference]: Finished difference Result 975412 states and 981035 transitions.
[2022-12-13 22:09:45,162 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 22:09:45,163 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 853.0) internal successors, (2559), 3 states have internal predecessors, (2559), 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 3368
[2022-12-13 22:09:45,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:09:45,698 INFO  L225             Difference]: With dead ends: 975412
[2022-12-13 22:09:45,698 INFO  L226             Difference]: Without dead ends: 491104
[2022-12-13 22:09:45,850 INFO  L412           NwaCegarLoop]: 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
[2022-12-13 22:09:45,851 INFO  L413           NwaCegarLoop]: 2796 mSDtfsCounter, 1265 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4343 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-12-13 22:09:45,851 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 2977 Invalid, 4371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4343 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-12-13 22:09:46,254 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 491104 states.
[2022-12-13 22:09:50,221 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 491104 to 489404.
[2022-12-13 22:09:50,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489404 states, 489403 states have (on average 1.0057376027527416) internal successors, (492211), 489403 states have internal predecessors, (492211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:50,809 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489404 states to 489404 states and 492211 transitions.
[2022-12-13 22:09:50,810 INFO  L78                 Accepts]: Start accepts. Automaton has 489404 states and 492211 transitions. Word has length 3368
[2022-12-13 22:09:50,810 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 22:09:50,810 INFO  L495      AbstractCegarLoop]: Abstraction has 489404 states and 492211 transitions.
[2022-12-13 22:09:50,811 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 853.0) internal successors, (2559), 3 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:09:50,811 INFO  L276                IsEmpty]: Start isEmpty. Operand 489404 states and 492211 transitions.
[2022-12-13 22:09:51,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3387
[2022-12-13 22:09:51,376 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 22:09:51,376 INFO  L195           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 22:09:51,376 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-12-13 22:09:51,377 INFO  L420      AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 22:09:51,377 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 22:09:51,377 INFO  L85        PathProgramCache]: Analyzing trace with hash 701280228, now seen corresponding path program 1 times
[2022-12-13 22:09:51,377 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 22:09:51,377 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43770068]
[2022-12-13 22:09:51,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 22:09:51,378 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 22:09:51,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 22:09:59,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 3218 backedges. 2578 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked.
[2022-12-13 22:09:59,148 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 22:09:59,148 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43770068]
[2022-12-13 22:09:59,148 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43770068] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 22:09:59,148 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 22:09:59,149 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-12-13 22:09:59,149 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454763366]
[2022-12-13 22:09:59,149 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 22:09:59,151 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-12-13 22:09:59,151 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 22:09:59,153 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-12-13 22:09:59,153 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 22:09:59,154 INFO  L87              Difference]: Start difference. First operand 489404 states and 492211 transitions. Second operand  has 5 states, 5 states have (on average 571.4) internal successors, (2857), 5 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 22:10:05,919 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 22:10:05,919 INFO  L93              Difference]: Finished difference Result 995311 states and 1001026 transitions.
[2022-12-13 22:10:05,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-12-13 22:10:05,920 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 571.4) internal successors, (2857), 5 states have internal predecessors, (2857), 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 3386
[2022-12-13 22:10:05,921 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 22:10:06,505 INFO  L225             Difference]: With dead ends: 995311
[2022-12-13 22:10:06,505 INFO  L226             Difference]: Without dead ends: 505907
[2022-12-13 22:10:06,664 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2022-12-13 22:10:06,665 INFO  L413           NwaCegarLoop]: 982 mSDtfsCounter, 3671 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 6133 mSolverCounterSat, 1640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3671 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 7773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1640 IncrementalHoareTripleChecker+Valid, 6133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time
[2022-12-13 22:10:06,665 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3671 Valid, 1234 Invalid, 7773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1640 Valid, 6133 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time]
[2022-12-13 22:10:07,082 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 505907 states.