./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label10.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 0f8a17c6
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1a818c41c0bcdab79ea6d7d14d802a90be23933677f33761f4fad2cdf4b8776
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-0f8a17c
[2021-11-19 05:16:22,063 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-19 05:16:22,067 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-19 05:16:22,133 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-19 05:16:22,134 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-19 05:16:22,142 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-19 05:16:22,144 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-19 05:16:22,146 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-19 05:16:22,149 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-19 05:16:22,151 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-19 05:16:22,152 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-19 05:16:22,154 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-19 05:16:22,155 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-19 05:16:22,163 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-19 05:16:22,165 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-19 05:16:22,168 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-19 05:16:22,175 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-19 05:16:22,177 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-19 05:16:22,180 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-19 05:16:22,183 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-19 05:16:22,190 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-19 05:16:22,192 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-19 05:16:22,195 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-19 05:16:22,197 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-19 05:16:22,205 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-19 05:16:22,206 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-19 05:16:22,206 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-19 05:16:22,209 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-19 05:16:22,210 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-19 05:16:22,211 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-19 05:16:22,212 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-19 05:16:22,213 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-19 05:16:22,216 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-19 05:16:22,218 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-19 05:16:22,220 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-19 05:16:22,220 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-19 05:16:22,221 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-19 05:16:22,221 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-19 05:16:22,222 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-19 05:16:22,223 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-19 05:16:22,224 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-19 05:16:22,225 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-19 05:16:22,270 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-19 05:16:22,271 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-19 05:16:22,271 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-19 05:16:22,271 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-19 05:16:22,272 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-19 05:16:22,273 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-19 05:16:22,274 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-19 05:16:22,274 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-19 05:16:22,274 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-19 05:16:22,275 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-19 05:16:22,275 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-19 05:16:22,275 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-19 05:16:22,275 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-19 05:16:22,276 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-19 05:16:22,276 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-19 05:16:22,276 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-19 05:16:22,277 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-19 05:16:22,277 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-19 05:16:22,277 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-19 05:16:22,277 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-19 05:16:22,278 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-19 05:16:22,278 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-19 05:16:22,278 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-19 05:16:22,279 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-19 05:16:22,279 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-19 05:16:22,279 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-19 05:16:22,280 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-19 05:16:22,280 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-19 05:16:22,280 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-19 05:16:22,281 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-19 05:16:22,281 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-19 05:16:22,281 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-19 05:16:22,281 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-19 05:16:22,282 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-19 05:16:22,282 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1a818c41c0bcdab79ea6d7d14d802a90be23933677f33761f4fad2cdf4b8776
[2021-11-19 05:16:22,602 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-19 05:16:22,645 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-19 05:16:22,648 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-19 05:16:22,650 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-19 05:16:22,651 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-19 05:16:22,654 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/eca-rers2012/Problem05_label10.c
[2021-11-19 05:16:22,755 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/data/b75f2fb3c/66fe0c9eff994fcaab5204e7a7f6c36c/FLAGc48213a58
[2021-11-19 05:16:24,078 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-19 05:16:24,079 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/sv-benchmarks/c/eca-rers2012/Problem05_label10.c
[2021-11-19 05:16:24,139 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/data/b75f2fb3c/66fe0c9eff994fcaab5204e7a7f6c36c/FLAGc48213a58
[2021-11-19 05:16:24,307 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/data/b75f2fb3c/66fe0c9eff994fcaab5204e7a7f6c36c
[2021-11-19 05:16:24,312 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-19 05:16:24,315 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-19 05:16:24,316 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-19 05:16:24,316 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-19 05:16:24,320 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-19 05:16:24,321 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:24" (1/1) ...
[2021-11-19 05:16:24,322 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90fae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:24, skipping insertion in model container
[2021-11-19 05:16:24,323 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:24" (1/1) ...
[2021-11-19 05:16:24,331 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-19 05:16:24,639 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-19 05:16:27,478 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/sv-benchmarks/c/eca-rers2012/Problem05_label10.c[380522,380535]
[2021-11-19 05:16:27,506 INFO  L207          PostProcessor]: Analyzing one entry point: main
[2021-11-19 05:16:27,519 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-19 05:16:29,072 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/sv-benchmarks/c/eca-rers2012/Problem05_label10.c[380522,380535]
[2021-11-19 05:16:29,080 INFO  L207          PostProcessor]: Analyzing one entry point: main
[2021-11-19 05:16:29,155 INFO  L208         MainTranslator]: Completed translation
[2021-11-19 05:16:29,156 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29 WrapperNode
[2021-11-19 05:16:29,156 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-19 05:16:29,158 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-19 05:16:29,158 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-19 05:16:29,159 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-19 05:16:29,167 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:29,307 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:29,781 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2021-11-19 05:16:29,782 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-19 05:16:29,783 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-19 05:16:29,783 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-19 05:16:29,784 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-19 05:16:29,794 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:29,794 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:29,851 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:29,851 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:30,440 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:30,544 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:30,567 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:30,658 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-19 05:16:30,660 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-19 05:16:30,660 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-19 05:16:30,660 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-19 05:16:30,672 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (1/1) ...
[2021-11-19 05:16:30,695 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-19 05:16:30,708 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/z3
[2021-11-19 05:16:30,769 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-19 05:16:30,835 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec9ab4e-0f22-4b81-9ab6-ace2ff5af4cd/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-19 05:16:30,880 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-19 05:16:30,881 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-19 05:16:30,881 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-19 05:16:30,881 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-19 05:16:30,976 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-19 05:16:30,978 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-19 05:16:40,645 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-19 05:16:40,684 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-19 05:16:40,684 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-19 05:16:40,692 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:40 BoogieIcfgContainer
[2021-11-19 05:16:40,693 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-19 05:16:40,695 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-19 05:16:40,695 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-19 05:16:40,700 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-19 05:16:40,700 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:24" (1/3) ...
[2021-11-19 05:16:40,701 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ef4e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:40, skipping insertion in model container
[2021-11-19 05:16:40,701 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:29" (2/3) ...
[2021-11-19 05:16:40,702 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ef4e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:40, skipping insertion in model container
[2021-11-19 05:16:40,702 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:40" (3/3) ...
[2021-11-19 05:16:40,704 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label10.c
[2021-11-19 05:16:40,711 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-19 05:16:40,711 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-19 05:16:40,792 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-19 05:16:40,802 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-19 05:16:40,802 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-19 05:16:40,874 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:16:41,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1680
[2021-11-19 05:16:41,025 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:16:41,027 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:16:41,028 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:16:41,034 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:16:41,036 INFO  L85        PathProgramCache]: Analyzing trace with hash 1181606065, now seen corresponding path program 1 times
[2021-11-19 05:16:41,047 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:16:41,047 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741609808]
[2021-11-19 05:16:41,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:16:41,050 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:16:41,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:16:44,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 05:16:44,352 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:16:44,353 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741609808]
[2021-11-19 05:16:44,354 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741609808] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:16:44,355 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:16:44,355 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 05:16:44,358 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368335363]
[2021-11-19 05:16:44,359 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:16:44,371 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:16:44,371 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:16:44,412 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:16:44,414 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:16:44,428 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 559.6666666666666) internal successors, (1679), 2 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:16:53,638 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:16:53,638 INFO  L93              Difference]: Finished difference Result 6156 states and 11651 transitions.
[2021-11-19 05:16:53,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:16:53,642 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 559.6666666666666) internal successors, (1679), 2 states have internal predecessors, (1679), 0 states have call successors, (0), 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 1679
[2021-11-19 05:16:53,659 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:16:53,715 INFO  L225             Difference]: With dead ends: 6156
[2021-11-19 05:16:53,715 INFO  L226             Difference]: Without dead ends: 3907
[2021-11-19 05:16:53,729 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:16:53,735 INFO  L933         BasicCegarLoop]: 1759 mSDtfsCounter, 297 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 1469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 7073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1469 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time
[2021-11-19 05:16:53,737 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2072 Invalid, 7073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1469 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time]
[2021-11-19 05:16:53,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3907 states.
[2021-11-19 05:16:53,954 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3900.
[2021-11-19 05:16:53,966 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3900 states, 3899 states have (on average 1.6196460630931009) internal successors, (6315), 3899 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:16:53,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6315 transitions.
[2021-11-19 05:16:53,996 INFO  L78                 Accepts]: Start accepts. Automaton has 3900 states and 6315 transitions. Word has length 1679
[2021-11-19 05:16:54,001 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:16:54,001 INFO  L470      AbstractCegarLoop]: Abstraction has 3900 states and 6315 transitions.
[2021-11-19 05:16:54,003 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 559.6666666666666) internal successors, (1679), 2 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:16:54,003 INFO  L276                IsEmpty]: Start isEmpty. Operand 3900 states and 6315 transitions.
[2021-11-19 05:16:54,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1685
[2021-11-19 05:16:54,133 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:16:54,135 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:16:54,136 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-19 05:16:54,138 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:16:54,142 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:16:54,143 INFO  L85        PathProgramCache]: Analyzing trace with hash 730501653, now seen corresponding path program 1 times
[2021-11-19 05:16:54,144 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:16:54,144 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899700874]
[2021-11-19 05:16:54,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:16:54,145 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:16:54,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:16:56,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 05:16:56,045 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:16:56,045 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899700874]
[2021-11-19 05:16:56,046 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899700874] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:16:56,046 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:16:56,047 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 05:16:56,047 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566191924]
[2021-11-19 05:16:56,047 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:16:56,052 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:16:56,052 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:16:56,053 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:16:56,053 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:16:56,055 INFO  L87              Difference]: Start difference. First operand 3900 states and 6315 transitions. Second operand  has 3 states, 3 states have (on average 561.3333333333334) internal successors, (1684), 2 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:04,050 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:17:04,050 INFO  L93              Difference]: Finished difference Result 11343 states and 18473 transitions.
[2021-11-19 05:17:04,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:17:04,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 561.3333333333334) internal successors, (1684), 2 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1684
[2021-11-19 05:17:04,061 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:17:04,115 INFO  L225             Difference]: With dead ends: 11343
[2021-11-19 05:17:04,115 INFO  L226             Difference]: Without dead ends: 7445
[2021-11-19 05:17:04,123 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:04,125 INFO  L933         BasicCegarLoop]: 1348 mSDtfsCounter, 1996 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 5241 mSolverCounterSat, 2351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 7592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2351 IncrementalHoareTripleChecker+Valid, 5241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2021-11-19 05:17:04,126 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 1568 Invalid, 7592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2351 Valid, 5241 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2021-11-19 05:17:04,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7445 states.
[2021-11-19 05:17:04,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 7361.
[2021-11-19 05:17:04,423 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7361 states, 7360 states have (on average 1.5040760869565217) internal successors, (11070), 7360 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:04,449 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 11070 transitions.
[2021-11-19 05:17:04,450 INFO  L78                 Accepts]: Start accepts. Automaton has 7361 states and 11070 transitions. Word has length 1684
[2021-11-19 05:17:04,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:17:04,452 INFO  L470      AbstractCegarLoop]: Abstraction has 7361 states and 11070 transitions.
[2021-11-19 05:17:04,454 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 561.3333333333334) internal successors, (1684), 2 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:04,455 INFO  L276                IsEmpty]: Start isEmpty. Operand 7361 states and 11070 transitions.
[2021-11-19 05:17:04,521 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1687
[2021-11-19 05:17:04,522 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:17:04,525 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:17:04,529 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-19 05:17:04,530 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:17:04,532 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:17:04,533 INFO  L85        PathProgramCache]: Analyzing trace with hash -194383366, now seen corresponding path program 1 times
[2021-11-19 05:17:04,533 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:17:04,535 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933563532]
[2021-11-19 05:17:04,536 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:17:04,537 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:17:05,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:17:07,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 05:17:07,509 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:17:07,510 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933563532]
[2021-11-19 05:17:07,510 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933563532] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:17:07,511 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:17:07,512 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 05:17:07,512 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180502758]
[2021-11-19 05:17:07,512 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:17:07,515 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-19 05:17:07,516 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:17:07,516 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-19 05:17:07,517 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-19 05:17:07,519 INFO  L87              Difference]: Start difference. First operand 7361 states and 11070 transitions. Second operand  has 4 states, 4 states have (on average 421.5) internal successors, (1686), 3 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:19,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:17:19,389 INFO  L93              Difference]: Finished difference Result 23148 states and 35021 transitions.
[2021-11-19 05:17:19,396 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-19 05:17:19,397 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.5) internal successors, (1686), 3 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1686
[2021-11-19 05:17:19,401 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:17:19,491 INFO  L225             Difference]: With dead ends: 23148
[2021-11-19 05:17:19,492 INFO  L226             Difference]: Without dead ends: 14137
[2021-11-19 05:17:19,502 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-19 05:17:19,504 INFO  L933         BasicCegarLoop]: 1032 mSDtfsCounter, 2410 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 9712 mSolverCounterSat, 3394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 13106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3394 IncrementalHoareTripleChecker+Valid, 9712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time
[2021-11-19 05:17:19,505 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2410 Valid, 1446 Invalid, 13106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3394 Valid, 9712 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time]
[2021-11-19 05:17:19,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14137 states.
[2021-11-19 05:17:19,812 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14137 to 14137.
[2021-11-19 05:17:19,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14137 states, 14136 states have (on average 1.2422184493491795) internal successors, (17560), 14136 states have internal predecessors, (17560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:19,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14137 states to 14137 states and 17560 transitions.
[2021-11-19 05:17:19,903 INFO  L78                 Accepts]: Start accepts. Automaton has 14137 states and 17560 transitions. Word has length 1686
[2021-11-19 05:17:19,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:17:19,904 INFO  L470      AbstractCegarLoop]: Abstraction has 14137 states and 17560 transitions.
[2021-11-19 05:17:19,905 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.5) internal successors, (1686), 3 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:19,906 INFO  L276                IsEmpty]: Start isEmpty. Operand 14137 states and 17560 transitions.
[2021-11-19 05:17:19,967 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1698
[2021-11-19 05:17:19,967 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:17:19,969 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:17:19,970 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-19 05:17:19,971 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:17:19,971 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:17:19,972 INFO  L85        PathProgramCache]: Analyzing trace with hash -1621425633, now seen corresponding path program 1 times
[2021-11-19 05:17:19,973 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:17:19,973 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862478685]
[2021-11-19 05:17:19,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:17:19,974 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:17:20,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:17:21,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 05:17:21,693 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:17:21,693 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862478685]
[2021-11-19 05:17:21,694 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862478685] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:17:21,694 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:17:21,695 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 05:17:21,695 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102293059]
[2021-11-19 05:17:21,695 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:17:21,698 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:17:21,698 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:17:21,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:17:21,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:21,700 INFO  L87              Difference]: Start difference. First operand 14137 states and 17560 transitions. Second operand  has 3 states, 3 states have (on average 565.6666666666666) internal successors, (1697), 3 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:27,589 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:17:27,589 INFO  L93              Difference]: Finished difference Result 42005 states and 52175 transitions.
[2021-11-19 05:17:27,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:17:27,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 565.6666666666666) internal successors, (1697), 3 states have internal predecessors, (1697), 0 states have call successors, (0), 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 1697
[2021-11-19 05:17:27,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:17:27,666 INFO  L225             Difference]: With dead ends: 42005
[2021-11-19 05:17:27,666 INFO  L226             Difference]: Without dead ends: 27870
[2021-11-19 05:17:27,687 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:27,689 INFO  L933         BasicCegarLoop]: 3359 mSDtfsCounter, 370 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 5187 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 5823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 5187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2021-11-19 05:17:27,690 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 3762 Invalid, 5823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 5187 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2021-11-19 05:17:27,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27870 states.
[2021-11-19 05:17:28,244 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27870 to 27824.
[2021-11-19 05:17:28,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27824 states, 27823 states have (on average 1.179959026704525) internal successors, (32830), 27823 states have internal predecessors, (32830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:28,357 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27824 states to 27824 states and 32830 transitions.
[2021-11-19 05:17:28,358 INFO  L78                 Accepts]: Start accepts. Automaton has 27824 states and 32830 transitions. Word has length 1697
[2021-11-19 05:17:28,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:17:28,360 INFO  L470      AbstractCegarLoop]: Abstraction has 27824 states and 32830 transitions.
[2021-11-19 05:17:28,361 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 565.6666666666666) internal successors, (1697), 3 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:28,362 INFO  L276                IsEmpty]: Start isEmpty. Operand 27824 states and 32830 transitions.
[2021-11-19 05:17:28,486 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1714
[2021-11-19 05:17:28,486 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:17:28,488 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2021-11-19 05:17:28,489 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-19 05:17:28,489 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:17:28,490 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:17:28,491 INFO  L85        PathProgramCache]: Analyzing trace with hash -1644750901, now seen corresponding path program 1 times
[2021-11-19 05:17:28,491 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:17:28,491 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117783069]
[2021-11-19 05:17:28,492 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:17:28,492 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:17:28,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:17:29,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 05:17:29,454 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:17:29,455 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117783069]
[2021-11-19 05:17:29,455 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117783069] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:17:29,455 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:17:29,456 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 05:17:29,456 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613664466]
[2021-11-19 05:17:29,458 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:17:29,461 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:17:29,461 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:17:29,462 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:17:29,462 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:29,463 INFO  L87              Difference]: Start difference. First operand 27824 states and 32830 transitions. Second operand  has 3 states, 3 states have (on average 571.0) internal successors, (1713), 2 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:35,506 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:17:35,506 INFO  L93              Difference]: Finished difference Result 82853 states and 97692 transitions.
[2021-11-19 05:17:35,506 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:17:35,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 571.0) internal successors, (1713), 2 states have internal predecessors, (1713), 0 states have call successors, (0), 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 1713
[2021-11-19 05:17:35,507 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:17:35,625 INFO  L225             Difference]: With dead ends: 82853
[2021-11-19 05:17:35,625 INFO  L226             Difference]: Without dead ends: 55031
[2021-11-19 05:17:35,662 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:35,663 INFO  L933         BasicCegarLoop]: 1148 mSDtfsCounter, 2010 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 4606 mSolverCounterSat, 1296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 5902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1296 IncrementalHoareTripleChecker+Valid, 4606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2021-11-19 05:17:35,664 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 1311 Invalid, 5902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1296 Valid, 4606 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2021-11-19 05:17:35,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55031 states.
[2021-11-19 05:17:36,445 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55031 to 55003.
[2021-11-19 05:17:36,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55003 states, 55002 states have (on average 1.1506854296207412) internal successors, (63290), 55002 states have internal predecessors, (63290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:36,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55003 states to 55003 states and 63290 transitions.
[2021-11-19 05:17:36,600 INFO  L78                 Accepts]: Start accepts. Automaton has 55003 states and 63290 transitions. Word has length 1713
[2021-11-19 05:17:36,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:17:36,601 INFO  L470      AbstractCegarLoop]: Abstraction has 55003 states and 63290 transitions.
[2021-11-19 05:17:36,602 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 571.0) internal successors, (1713), 2 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:36,602 INFO  L276                IsEmpty]: Start isEmpty. Operand 55003 states and 63290 transitions.
[2021-11-19 05:17:36,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1721
[2021-11-19 05:17:36,727 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:17:36,728 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:17:36,729 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-19 05:17:36,729 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:17:36,730 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:17:36,731 INFO  L85        PathProgramCache]: Analyzing trace with hash 1376638156, now seen corresponding path program 1 times
[2021-11-19 05:17:36,733 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:17:36,734 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971184095]
[2021-11-19 05:17:36,734 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:17:36,735 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:17:36,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:17:37,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-19 05:17:37,735 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:17:37,736 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971184095]
[2021-11-19 05:17:37,736 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971184095] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:17:37,736 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:17:37,737 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 05:17:37,737 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220417968]
[2021-11-19 05:17:37,737 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:17:37,740 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:17:37,740 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:17:37,741 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:17:37,741 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:37,742 INFO  L87              Difference]: Start difference. First operand 55003 states and 63290 transitions. Second operand  has 3 states, 3 states have (on average 572.0) internal successors, (1716), 2 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:43,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:17:43,925 INFO  L93              Difference]: Finished difference Result 137199 states and 157080 transitions.
[2021-11-19 05:17:43,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:17:43,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 572.0) internal successors, (1716), 2 states have internal predecessors, (1716), 0 states have call successors, (0), 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 1720
[2021-11-19 05:17:43,927 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:17:44,078 INFO  L225             Difference]: With dead ends: 137199
[2021-11-19 05:17:44,078 INFO  L226             Difference]: Without dead ends: 82198
[2021-11-19 05:17:44,114 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:44,115 INFO  L933         BasicCegarLoop]: 984 mSDtfsCounter, 2100 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 5657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2021-11-19 05:17:44,116 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1118 Invalid, 5657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2021-11-19 05:17:44,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82198 states.
[2021-11-19 05:17:45,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82198 to 82175.
[2021-11-19 05:17:45,447 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82175 states, 82174 states have (on average 1.1007374595370798) internal successors, (90452), 82174 states have internal predecessors, (90452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:45,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82175 states to 82175 states and 90452 transitions.
[2021-11-19 05:17:45,541 INFO  L78                 Accepts]: Start accepts. Automaton has 82175 states and 90452 transitions. Word has length 1720
[2021-11-19 05:17:45,542 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:17:45,542 INFO  L470      AbstractCegarLoop]: Abstraction has 82175 states and 90452 transitions.
[2021-11-19 05:17:45,543 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 572.0) internal successors, (1716), 2 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:45,543 INFO  L276                IsEmpty]: Start isEmpty. Operand 82175 states and 90452 transitions.
[2021-11-19 05:17:46,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1737
[2021-11-19 05:17:46,025 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:17:46,026 INFO  L514         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-19 05:17:46,027 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-19 05:17:46,027 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:17:46,028 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:17:46,028 INFO  L85        PathProgramCache]: Analyzing trace with hash -1996185885, now seen corresponding path program 1 times
[2021-11-19 05:17:46,029 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:17:46,029 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431333679]
[2021-11-19 05:17:46,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:17:46,030 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:17:46,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:17:46,986 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2021-11-19 05:17:46,986 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:17:46,987 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431333679]
[2021-11-19 05:17:46,987 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431333679] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:17:46,987 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:17:46,988 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 05:17:46,988 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160027854]
[2021-11-19 05:17:46,988 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:17:46,992 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:17:46,992 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:17:46,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:17:46,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:46,994 INFO  L87              Difference]: Start difference. First operand 82175 states and 90452 transitions. Second operand  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 2 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:53,459 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:17:53,460 INFO  L93              Difference]: Finished difference Result 244149 states and 268721 transitions.
[2021-11-19 05:17:53,460 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:17:53,460 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 2 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1736
[2021-11-19 05:17:53,461 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:17:53,687 INFO  L225             Difference]: With dead ends: 244149
[2021-11-19 05:17:53,687 INFO  L226             Difference]: Without dead ends: 161976
[2021-11-19 05:17:53,931 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:53,951 INFO  L933         BasicCegarLoop]: 1053 mSDtfsCounter, 2375 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4636 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 5546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 4636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2021-11-19 05:17:53,951 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 1224 Invalid, 5546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 4636 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2021-11-19 05:17:54,160 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 161976 states.
[2021-11-19 05:17:56,194 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 161976 to 161971.
[2021-11-19 05:17:56,304 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 161971 states, 161970 states have (on average 1.0756745076248688) internal successors, (174227), 161970 states have internal predecessors, (174227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:56,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 161971 states to 161971 states and 174227 transitions.
[2021-11-19 05:17:56,534 INFO  L78                 Accepts]: Start accepts. Automaton has 161971 states and 174227 transitions. Word has length 1736
[2021-11-19 05:17:56,534 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:17:56,534 INFO  L470      AbstractCegarLoop]: Abstraction has 161971 states and 174227 transitions.
[2021-11-19 05:17:56,535 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 2 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:17:56,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 161971 states and 174227 transitions.
[2021-11-19 05:17:57,177 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1773
[2021-11-19 05:17:57,177 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:17:57,179 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:17:57,179 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-19 05:17:57,179 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:17:57,180 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:17:57,180 INFO  L85        PathProgramCache]: Analyzing trace with hash -1896826430, now seen corresponding path program 1 times
[2021-11-19 05:17:57,181 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:17:57,181 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537531743]
[2021-11-19 05:17:57,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:17:57,181 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:17:57,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:17:58,102 INFO  L134       CoverageAnalysis]: Checked inductivity of 118 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-11-19 05:17:58,102 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:17:58,103 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537531743]
[2021-11-19 05:17:58,103 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537531743] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:17:58,103 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:17:58,104 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 05:17:58,104 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155023558]
[2021-11-19 05:17:58,104 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:17:58,107 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:17:58,107 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:17:58,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:17:58,108 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:17:58,109 INFO  L87              Difference]: Start difference. First operand 161971 states and 174227 transitions. Second operand  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:05,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:18:05,883 INFO  L93              Difference]: Finished difference Result 396964 states and 429443 transitions.
[2021-11-19 05:18:05,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:18:05,884 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 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 1772
[2021-11-19 05:18:05,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:18:06,186 INFO  L225             Difference]: With dead ends: 396964
[2021-11-19 05:18:06,186 INFO  L226             Difference]: Without dead ends: 234995
[2021-11-19 05:18:06,266 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:18:06,267 INFO  L933         BasicCegarLoop]: 3097 mSDtfsCounter, 1897 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 4540 mSolverCounterSat, 1126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 4540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2021-11-19 05:18:06,268 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 3324 Invalid, 5666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 4540 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2021-11-19 05:18:06,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 234995 states.
[2021-11-19 05:18:09,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 234995 to 234987.
[2021-11-19 05:18:09,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 234987 states, 234986 states have (on average 1.0624718068310453) internal successors, (249666), 234986 states have internal predecessors, (249666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:10,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 234987 states to 234987 states and 249666 transitions.
[2021-11-19 05:18:10,189 INFO  L78                 Accepts]: Start accepts. Automaton has 234987 states and 249666 transitions. Word has length 1772
[2021-11-19 05:18:10,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:18:10,189 INFO  L470      AbstractCegarLoop]: Abstraction has 234987 states and 249666 transitions.
[2021-11-19 05:18:10,190 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:10,190 INFO  L276                IsEmpty]: Start isEmpty. Operand 234987 states and 249666 transitions.
[2021-11-19 05:18:11,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1786
[2021-11-19 05:18:11,150 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:18:11,155 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:18:11,156 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-19 05:18:11,156 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:18:11,157 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:18:11,158 INFO  L85        PathProgramCache]: Analyzing trace with hash 581998711, now seen corresponding path program 1 times
[2021-11-19 05:18:11,158 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:18:11,158 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969854164]
[2021-11-19 05:18:11,158 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:18:11,159 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:18:11,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:18:12,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-19 05:18:12,168 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:18:12,168 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969854164]
[2021-11-19 05:18:12,169 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969854164] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:18:12,169 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:18:12,169 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-19 05:18:12,170 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447284635]
[2021-11-19 05:18:12,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:18:12,172 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:18:12,173 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:18:12,173 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:18:12,173 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:18:12,174 INFO  L87              Difference]: Start difference. First operand 234987 states and 249666 transitions. Second operand  has 3 states, 3 states have (on average 595.0) internal successors, (1785), 2 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:19,362 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:18:19,362 INFO  L93              Difference]: Finished difference Result 466482 states and 495360 transitions.
[2021-11-19 05:18:19,362 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:18:19,363 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 595.0) internal successors, (1785), 2 states have internal predecessors, (1785), 0 states have call successors, (0), 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 1785
[2021-11-19 05:18:19,363 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:18:19,737 INFO  L225             Difference]: With dead ends: 466482
[2021-11-19 05:18:19,737 INFO  L226             Difference]: Without dead ends: 231497
[2021-11-19 05:18:19,874 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:18:19,875 INFO  L933         BasicCegarLoop]: 1054 mSDtfsCounter, 2335 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2021-11-19 05:18:19,876 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2335 Valid, 1186 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2021-11-19 05:18:20,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 231497 states.
[2021-11-19 05:18:22,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 231497 to 209419.
[2021-11-19 05:18:23,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 209419 states, 209418 states have (on average 1.0456503261419745) internal successors, (218978), 209418 states have internal predecessors, (218978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:23,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 209419 states to 209419 states and 218978 transitions.
[2021-11-19 05:18:23,938 INFO  L78                 Accepts]: Start accepts. Automaton has 209419 states and 218978 transitions. Word has length 1785
[2021-11-19 05:18:23,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-19 05:18:23,939 INFO  L470      AbstractCegarLoop]: Abstraction has 209419 states and 218978 transitions.
[2021-11-19 05:18:23,939 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 595.0) internal successors, (1785), 2 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:23,940 INFO  L276                IsEmpty]: Start isEmpty. Operand 209419 states and 218978 transitions.
[2021-11-19 05:18:24,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1936
[2021-11-19 05:18:24,223 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-19 05:18:24,226 INFO  L514         BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-19 05:18:24,226 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-19 05:18:24,226 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-19 05:18:24,227 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-19 05:18:24,228 INFO  L85        PathProgramCache]: Analyzing trace with hash -459410248, now seen corresponding path program 1 times
[2021-11-19 05:18:24,228 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-19 05:18:24,228 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688985013]
[2021-11-19 05:18:24,229 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-19 05:18:24,229 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-19 05:18:24,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-19 05:18:25,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 445 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2021-11-19 05:18:25,132 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-19 05:18:25,132 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688985013]
[2021-11-19 05:18:25,132 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688985013] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-19 05:18:25,132 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-19 05:18:25,133 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-19 05:18:25,133 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060681863]
[2021-11-19 05:18:25,134 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-19 05:18:25,137 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-19 05:18:25,137 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-19 05:18:25,138 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-19 05:18:25,138 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:18:25,139 INFO  L87              Difference]: Start difference. First operand 209419 states and 218978 transitions. Second operand  has 3 states, 3 states have (on average 632.3333333333334) internal successors, (1897), 3 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-19 05:18:33,539 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-19 05:18:33,539 INFO  L93              Difference]: Finished difference Result 497020 states and 520289 transitions.
[2021-11-19 05:18:33,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-19 05:18:33,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 632.3333333333334) internal successors, (1897), 3 states have internal predecessors, (1897), 0 states have call successors, (0), 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 1935
[2021-11-19 05:18:33,540 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-19 05:18:33,901 INFO  L225             Difference]: With dead ends: 497020
[2021-11-19 05:18:33,901 INFO  L226             Difference]: Without dead ends: 285905
[2021-11-19 05:18:33,984 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-19 05:18:33,985 INFO  L933         BasicCegarLoop]: 3253 mSDtfsCounter, 1753 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 5937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2021-11-19 05:18:33,985 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 3466 Invalid, 5937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2021-11-19 05:18:34,240 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 285905 states.
[2021-11-19 05:18:37,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 285905 to 282439.
[2021-11-19 05:18:38,227 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 282439 states, 282438 states have (on average 1.0380472882544134) internal successors, (293184), 282438 states have internal predecessors, (293184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)