./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label05.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 7e70badd
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G --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 8c719552bffa6ba6db840a4f702be318375a6b230876dbc0ec27371d8d8c7a55
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-7e70bad
[2021-11-23 14:09:15,565 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-23 14:09:15,567 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-23 14:09:15,609 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-23 14:09:15,610 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-23 14:09:15,611 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-23 14:09:15,614 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-23 14:09:15,617 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-23 14:09:15,619 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-23 14:09:15,620 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-23 14:09:15,622 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-23 14:09:15,623 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-23 14:09:15,624 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-23 14:09:15,625 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-23 14:09:15,627 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-23 14:09:15,629 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-23 14:09:15,630 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-23 14:09:15,632 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-23 14:09:15,634 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-23 14:09:15,637 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-23 14:09:15,639 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-23 14:09:15,641 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-23 14:09:15,643 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-23 14:09:15,644 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-23 14:09:15,648 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-23 14:09:15,649 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-23 14:09:15,649 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-23 14:09:15,651 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-23 14:09:15,651 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-23 14:09:15,653 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-23 14:09:15,653 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-23 14:09:15,655 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-23 14:09:15,656 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-23 14:09:15,657 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-23 14:09:15,658 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-23 14:09:15,659 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-23 14:09:15,660 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-23 14:09:15,660 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-23 14:09:15,661 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-23 14:09:15,662 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-23 14:09:15,663 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-23 14:09:15,664 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-23 14:09:15,695 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-23 14:09:15,695 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-23 14:09:15,696 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-23 14:09:15,696 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-23 14:09:15,698 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-23 14:09:15,698 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-23 14:09:15,699 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-23 14:09:15,699 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-23 14:09:15,700 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-23 14:09:15,700 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-23 14:09:15,700 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-23 14:09:15,701 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-23 14:09:15,701 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-23 14:09:15,702 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-23 14:09:15,702 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-23 14:09:15,702 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-23 14:09:15,702 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-23 14:09:15,703 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-23 14:09:15,703 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-23 14:09:15,703 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-23 14:09:15,703 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-23 14:09:15,704 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-23 14:09:15,704 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-23 14:09:15,704 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-23 14:09:15,704 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-23 14:09:15,705 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-23 14:09:15,705 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-23 14:09:15,705 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-23 14:09:15,705 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-23 14:09:15,706 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-23 14:09:15,706 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-23 14:09:15,706 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-23 14:09:15,706 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_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/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_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G
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 -> 8c719552bffa6ba6db840a4f702be318375a6b230876dbc0ec27371d8d8c7a55
[2021-11-23 14:09:16,008 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-23 14:09:16,037 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-23 14:09:16,041 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-23 14:09:16,042 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-23 14:09:16,043 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-23 14:09:16,045 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/eca-rers2012/Problem05_label05.c
[2021-11-23 14:09:16,117 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/data/52763c5c9/c56d199fccbe4dc482f195cb89b672c2/FLAG9854c0559
[2021-11-23 14:09:17,391 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-23 14:09:17,391 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/sv-benchmarks/c/eca-rers2012/Problem05_label05.c
[2021-11-23 14:09:17,478 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/data/52763c5c9/c56d199fccbe4dc482f195cb89b672c2/FLAG9854c0559
[2021-11-23 14:09:17,991 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/data/52763c5c9/c56d199fccbe4dc482f195cb89b672c2
[2021-11-23 14:09:17,994 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-23 14:09:17,997 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-23 14:09:17,999 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-23 14:09:17,999 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-23 14:09:18,014 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-23 14:09:18,015 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:17" (1/1) ...
[2021-11-23 14:09:18,016 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15977072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18, skipping insertion in model container
[2021-11-23 14:09:18,016 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:17" (1/1) ...
[2021-11-23 14:09:18,025 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-23 14:09:18,303 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-23 14:09:21,041 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_a6f867d2-4310-4f34-a8fc-7910136f7b8a/sv-benchmarks/c/eca-rers2012/Problem05_label05.c[381607,381620]
[2021-11-23 14:09:21,067 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-23 14:09:21,080 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-23 14:09:22,800 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_a6f867d2-4310-4f34-a8fc-7910136f7b8a/sv-benchmarks/c/eca-rers2012/Problem05_label05.c[381607,381620]
[2021-11-23 14:09:22,812 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-23 14:09:22,959 INFO  L208         MainTranslator]: Completed translation
[2021-11-23 14:09:22,960 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22 WrapperNode
[2021-11-23 14:09:22,961 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-23 14:09:22,963 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-23 14:09:22,963 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-23 14:09:22,963 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-23 14:09:22,982 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:23,165 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:23,756 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2021-11-23 14:09:23,756 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-23 14:09:23,758 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-23 14:09:23,758 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-23 14:09:23,758 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-23 14:09:23,769 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:23,769 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:23,852 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:23,853 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:24,178 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:24,319 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:24,361 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:24,482 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-23 14:09:24,484 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-23 14:09:24,484 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-23 14:09:24,484 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-23 14:09:24,489 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (1/1) ...
[2021-11-23 14:09:24,510 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-23 14:09:24,536 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/z3
[2021-11-23 14:09:24,574 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-23 14:09:24,640 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f867d2-4310-4f34-a8fc-7910136f7b8a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-23 14:09:24,695 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-23 14:09:24,696 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-23 14:09:24,696 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-23 14:09:24,696 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-23 14:09:24,784 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-23 14:09:24,786 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-23 14:09:33,812 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-23 14:09:33,846 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-23 14:09:33,846 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-23 14:09:33,851 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:33 BoogieIcfgContainer
[2021-11-23 14:09:33,852 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-23 14:09:33,854 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-23 14:09:33,854 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-23 14:09:33,858 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-23 14:09:33,858 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:09:17" (1/3) ...
[2021-11-23 14:09:33,859 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0716e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:33, skipping insertion in model container
[2021-11-23 14:09:33,859 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:22" (2/3) ...
[2021-11-23 14:09:33,859 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0716e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:33, skipping insertion in model container
[2021-11-23 14:09:33,860 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:33" (3/3) ...
[2021-11-23 14:09:33,861 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label05.c
[2021-11-23 14:09:33,868 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-23 14:09:33,868 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-23 14:09:33,945 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-23 14:09:33,952 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
[2021-11-23 14:09:33,953 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-23 14:09:34,010 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)
[2021-11-23 14:09:34,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1688
[2021-11-23 14:09:34,151 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:09:34,153 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:09:34,154 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:09:34,160 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:09:34,162 INFO  L85        PathProgramCache]: Analyzing trace with hash -1507575471, now seen corresponding path program 1 times
[2021-11-23 14:09:34,173 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:09:34,173 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730403153]
[2021-11-23 14:09:34,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:09:34,175 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:09:34,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:09:37,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:09:37,782 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:09:37,783 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730403153]
[2021-11-23 14:09:37,784 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730403153] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:09:37,784 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:09:37,785 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:09:37,787 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114136015]
[2021-11-23 14:09:37,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:09:37,797 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-23 14:09:37,797 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:09:37,841 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-23 14:09:37,843 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-23 14:09:37,854 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 421.75) internal successors, (1687), 3 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:09:55,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:09:55,889 INFO  L93              Difference]: Finished difference Result 9561 states and 18419 transitions.
[2021-11-23 14:09:55,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-23 14:09:55,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 421.75) internal successors, (1687), 3 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1687
[2021-11-23 14:09:55,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:09:55,988 INFO  L225             Difference]: With dead ends: 9561
[2021-11-23 14:09:55,989 INFO  L226             Difference]: Without dead ends: 7306
[2021-11-23 14:09:56,001 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-23 14:09:56,006 INFO  L933         BasicCegarLoop]: 1220 mSDtfsCounter, 3994 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 11174 mSolverCounterSat, 4901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3994 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 16075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4901 IncrementalHoareTripleChecker+Valid, 11174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time
[2021-11-23 14:09:56,008 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3994 Valid, 1720 Invalid, 16075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4901 Valid, 11174 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time]
[2021-11-23 14:09:56,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7306 states.
[2021-11-23 14:09:56,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7306 to 5619.
[2021-11-23 14:09:56,356 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5619 states, 5618 states have (on average 1.523495906016376) internal successors, (8559), 5618 states have internal predecessors, (8559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:09:56,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 8559 transitions.
[2021-11-23 14:09:56,385 INFO  L78                 Accepts]: Start accepts. Automaton has 5619 states and 8559 transitions. Word has length 1687
[2021-11-23 14:09:56,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:09:56,391 INFO  L470      AbstractCegarLoop]: Abstraction has 5619 states and 8559 transitions.
[2021-11-23 14:09:56,393 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 421.75) internal successors, (1687), 3 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:09:56,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 5619 states and 8559 transitions.
[2021-11-23 14:09:56,507 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1802
[2021-11-23 14:09:56,508 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:09:56,510 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:09:56,510 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-23 14:09:56,511 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:09:56,512 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:09:56,513 INFO  L85        PathProgramCache]: Analyzing trace with hash 1903021287, now seen corresponding path program 1 times
[2021-11-23 14:09:56,513 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:09:56,514 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513736687]
[2021-11-23 14:09:56,515 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:09:56,515 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:09:56,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:09:58,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:09:58,436 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:09:58,438 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513736687]
[2021-11-23 14:09:58,438 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513736687] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:09:58,438 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:09:58,439 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:09:58,439 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096862484]
[2021-11-23 14:09:58,440 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:09:58,445 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:09:58,447 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:09:58,448 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:09:58,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:09:58,451 INFO  L87              Difference]: Start difference. First operand 5619 states and 8559 transitions. Second operand  has 3 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 3 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:06,752 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:10:06,752 INFO  L93              Difference]: Finished difference Result 14776 states and 23474 transitions.
[2021-11-23 14:10:06,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:10:06,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 3 states have internal predecessors, (1801), 0 states have call successors, (0), 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 1801
[2021-11-23 14:10:06,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:10:06,814 INFO  L225             Difference]: With dead ends: 14776
[2021-11-23 14:10:06,814 INFO  L226             Difference]: Without dead ends: 9159
[2021-11-23 14:10:06,822 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
[2021-11-23 14:10:06,824 INFO  L933         BasicCegarLoop]: 1004 mSDtfsCounter, 2112 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5309 mSolverCounterSat, 2634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 7943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2634 IncrementalHoareTripleChecker+Valid, 5309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2021-11-23 14:10:06,825 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2112 Valid, 1172 Invalid, 7943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2634 Valid, 5309 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2021-11-23 14:10:06,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9159 states.
[2021-11-23 14:10:07,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9159 to 9074.
[2021-11-23 14:10:07,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9074 states, 9073 states have (on average 1.5619971343546788) internal successors, (14172), 9073 states have internal predecessors, (14172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:07,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9074 states to 9074 states and 14172 transitions.
[2021-11-23 14:10:07,080 INFO  L78                 Accepts]: Start accepts. Automaton has 9074 states and 14172 transitions. Word has length 1801
[2021-11-23 14:10:07,081 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:10:07,082 INFO  L470      AbstractCegarLoop]: Abstraction has 9074 states and 14172 transitions.
[2021-11-23 14:10:07,083 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 3 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:07,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 9074 states and 14172 transitions.
[2021-11-23 14:10:07,138 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1804
[2021-11-23 14:10:07,139 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:10:07,141 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-23 14:10:07,142 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-23 14:10:07,143 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:10:07,146 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:10:07,148 INFO  L85        PathProgramCache]: Analyzing trace with hash 254587724, now seen corresponding path program 1 times
[2021-11-23 14:10:07,148 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:10:07,148 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780699322]
[2021-11-23 14:10:07,149 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:10:07,150 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:10:07,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:10:08,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:10:08,102 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:10:08,109 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780699322]
[2021-11-23 14:10:08,110 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780699322] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:10:08,110 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:10:08,111 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:10:08,112 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546288081]
[2021-11-23 14:10:08,112 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:10:08,115 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-23 14:10:08,115 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:10:08,116 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-23 14:10:08,117 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-11-23 14:10:08,118 INFO  L87              Difference]: Start difference. First operand 9074 states and 14172 transitions. Second operand  has 4 states, 4 states have (on average 450.75) internal successors, (1803), 3 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:19,276 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:10:19,276 INFO  L93              Difference]: Finished difference Result 31808 states and 51841 transitions.
[2021-11-23 14:10:19,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-11-23 14:10:19,277 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 450.75) internal successors, (1803), 3 states have internal predecessors, (1803), 0 states have call successors, (0), 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 1803
[2021-11-23 14:10:19,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:10:19,371 INFO  L225             Difference]: With dead ends: 31808
[2021-11-23 14:10:19,372 INFO  L226             Difference]: Without dead ends: 22736
[2021-11-23 14:10:19,389 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
[2021-11-23 14:10:19,391 INFO  L933         BasicCegarLoop]: 1548 mSDtfsCounter, 4050 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 9283 mSolverCounterSat, 4142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 13425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4142 IncrementalHoareTripleChecker+Valid, 9283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time
[2021-11-23 14:10:19,392 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4050 Valid, 1886 Invalid, 13425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4142 Valid, 9283 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time]
[2021-11-23 14:10:19,428 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22736 states.
[2021-11-23 14:10:19,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22736 to 22682.
[2021-11-23 14:10:20,000 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22682 states, 22681 states have (on average 1.4022309421983157) internal successors, (31804), 22681 states have internal predecessors, (31804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:20,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22682 states to 22682 states and 31804 transitions.
[2021-11-23 14:10:20,052 INFO  L78                 Accepts]: Start accepts. Automaton has 22682 states and 31804 transitions. Word has length 1803
[2021-11-23 14:10:20,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:10:20,053 INFO  L470      AbstractCegarLoop]: Abstraction has 22682 states and 31804 transitions.
[2021-11-23 14:10:20,055 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 450.75) internal successors, (1803), 3 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:20,055 INFO  L276                IsEmpty]: Start isEmpty. Operand 22682 states and 31804 transitions.
[2021-11-23 14:10:20,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1807
[2021-11-23 14:10:20,149 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:10:20,151 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:10:20,152 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-23 14:10:20,153 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:10:20,154 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:10:20,155 INFO  L85        PathProgramCache]: Analyzing trace with hash 1981046546, now seen corresponding path program 1 times
[2021-11-23 14:10:20,155 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:10:20,155 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396295974]
[2021-11-23 14:10:20,156 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:10:20,156 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:10:20,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:10:21,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 127 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-11-23 14:10:21,215 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:10:21,216 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396295974]
[2021-11-23 14:10:21,216 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396295974] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:10:21,216 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:10:21,217 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-23 14:10:21,217 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355833656]
[2021-11-23 14:10:21,218 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:10:21,221 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:10:21,221 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:10:21,222 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:10:21,222 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:10:21,223 INFO  L87              Difference]: Start difference. First operand 22682 states and 31804 transitions. Second operand  has 3 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 2 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:27,848 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:10:27,849 INFO  L93              Difference]: Finished difference Result 62336 states and 88258 transitions.
[2021-11-23 14:10:27,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:10:27,862 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 2 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1806
[2021-11-23 14:10:27,863 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:10:27,957 INFO  L225             Difference]: With dead ends: 62336
[2021-11-23 14:10:27,957 INFO  L226             Difference]: Without dead ends: 39656
[2021-11-23 14:10:27,981 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
[2021-11-23 14:10:27,983 INFO  L933         BasicCegarLoop]: 1568 mSDtfsCounter, 2431 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4786 mSolverCounterSat, 2058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2058 IncrementalHoareTripleChecker+Valid, 4786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2021-11-23 14:10:27,984 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2431 Valid, 1756 Invalid, 6844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2058 Valid, 4786 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2021-11-23 14:10:28,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39656 states.
[2021-11-23 14:10:28,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39656 to 39655.
[2021-11-23 14:10:28,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39655 states, 39654 states have (on average 1.2994401573611742) internal successors, (51528), 39654 states have internal predecessors, (51528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:28,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39655 states to 39655 states and 51528 transitions.
[2021-11-23 14:10:28,691 INFO  L78                 Accepts]: Start accepts. Automaton has 39655 states and 51528 transitions. Word has length 1806
[2021-11-23 14:10:28,692 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:10:28,693 INFO  L470      AbstractCegarLoop]: Abstraction has 39655 states and 51528 transitions.
[2021-11-23 14:10:28,694 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 2 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:28,694 INFO  L276                IsEmpty]: Start isEmpty. Operand 39655 states and 51528 transitions.
[2021-11-23 14:10:28,811 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1815
[2021-11-23 14:10:28,811 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:10:28,813 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-23 14:10:28,814 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-23 14:10:28,814 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:10:28,815 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:10:28,816 INFO  L85        PathProgramCache]: Analyzing trace with hash -382687283, now seen corresponding path program 1 times
[2021-11-23 14:10:28,817 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:10:28,817 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786398061]
[2021-11-23 14:10:28,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:10:28,818 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:10:28,994 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:10:29,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 143 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-23 14:10:29,634 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:10:29,634 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786398061]
[2021-11-23 14:10:29,634 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786398061] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:10:29,635 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:10:29,635 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:10:29,636 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376374479]
[2021-11-23 14:10:29,636 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:10:29,639 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:10:29,639 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:10:29,640 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:10:29,640 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:10:29,641 INFO  L87              Difference]: Start difference. First operand 39655 states and 51528 transitions. Second operand  has 3 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:36,913 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:10:36,913 INFO  L93              Difference]: Finished difference Result 89573 states and 116885 transitions.
[2021-11-23 14:10:36,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:10:36,918 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 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 1814
[2021-11-23 14:10:36,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:10:37,013 INFO  L225             Difference]: With dead ends: 89573
[2021-11-23 14:10:37,013 INFO  L226             Difference]: Without dead ends: 49920
[2021-11-23 14:10:37,044 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
[2021-11-23 14:10:37,045 INFO  L933         BasicCegarLoop]: 3918 mSDtfsCounter, 1856 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 6256 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4144 SdHoareTripleChecker+Invalid, 7156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 6256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time
[2021-11-23 14:10:37,046 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1856 Valid, 4144 Invalid, 7156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 6256 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time]
[2021-11-23 14:10:37,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49920 states.
[2021-11-23 14:10:37,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49920 to 46450.
[2021-11-23 14:10:37,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46450 states, 46449 states have (on average 1.2810609485672457) internal successors, (59504), 46449 states have internal predecessors, (59504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:38,149 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46450 states to 46450 states and 59504 transitions.
[2021-11-23 14:10:38,150 INFO  L78                 Accepts]: Start accepts. Automaton has 46450 states and 59504 transitions. Word has length 1814
[2021-11-23 14:10:38,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:10:38,151 INFO  L470      AbstractCegarLoop]: Abstraction has 46450 states and 59504 transitions.
[2021-11-23 14:10:38,151 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:38,153 INFO  L276                IsEmpty]: Start isEmpty. Operand 46450 states and 59504 transitions.
[2021-11-23 14:10:38,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1832
[2021-11-23 14:10:38,303 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:10:38,305 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:10:38,306 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-23 14:10:38,306 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:10:38,309 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:10:38,310 INFO  L85        PathProgramCache]: Analyzing trace with hash -349464102, now seen corresponding path program 1 times
[2021-11-23 14:10:38,310 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:10:38,310 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200487512]
[2021-11-23 14:10:38,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:10:38,313 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:10:38,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:10:39,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2021-11-23 14:10:39,515 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:10:39,515 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200487512]
[2021-11-23 14:10:39,515 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200487512] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:10:39,516 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:10:39,516 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-23 14:10:39,517 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601360943]
[2021-11-23 14:10:39,517 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:10:39,521 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:10:39,521 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:10:39,521 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:10:39,522 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:10:39,523 INFO  L87              Difference]: Start difference. First operand 46450 states and 59504 transitions. Second operand  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:46,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:10:46,256 INFO  L93              Difference]: Finished difference Result 114979 states and 146043 transitions.
[2021-11-23 14:10:46,256 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:10:46,257 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1831
[2021-11-23 14:10:46,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:10:46,399 INFO  L225             Difference]: With dead ends: 114979
[2021-11-23 14:10:46,400 INFO  L226             Difference]: Without dead ends: 68531
[2021-11-23 14:10:46,441 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
[2021-11-23 14:10:46,442 INFO  L933         BasicCegarLoop]: 1886 mSDtfsCounter, 1779 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 5678 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 5678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2021-11-23 14:10:46,443 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1779 Valid, 2189 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 5678 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2021-11-23 14:10:46,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68531 states.
[2021-11-23 14:10:47,774 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68531 to 66826.
[2021-11-23 14:10:47,877 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66826 states, 66825 states have (on average 1.2357052001496447) internal successors, (82576), 66825 states have internal predecessors, (82576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:48,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66826 states to 66826 states and 82576 transitions.
[2021-11-23 14:10:48,207 INFO  L78                 Accepts]: Start accepts. Automaton has 66826 states and 82576 transitions. Word has length 1831
[2021-11-23 14:10:48,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:10:48,224 INFO  L470      AbstractCegarLoop]: Abstraction has 66826 states and 82576 transitions.
[2021-11-23 14:10:48,224 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:48,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 66826 states and 82576 transitions.
[2021-11-23 14:10:48,358 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1844
[2021-11-23 14:10:48,358 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:10:48,360 INFO  L514         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:10:48,360 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-23 14:10:48,361 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:10:48,361 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:10:48,362 INFO  L85        PathProgramCache]: Analyzing trace with hash -94841334, now seen corresponding path program 1 times
[2021-11-23 14:10:48,363 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:10:48,363 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708221628]
[2021-11-23 14:10:48,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:10:48,364 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:10:48,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:10:49,586 INFO  L134       CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2021-11-23 14:10:49,599 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:10:49,599 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708221628]
[2021-11-23 14:10:49,600 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708221628] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:10:49,600 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:10:49,600 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:10:49,601 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262674534]
[2021-11-23 14:10:49,601 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:10:49,604 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:10:49,604 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:10:49,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:10:49,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:10:49,607 INFO  L87              Difference]: Start difference. First operand 66826 states and 82576 transitions. Second operand  has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:56,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:10:56,469 INFO  L93              Difference]: Finished difference Result 135352 states and 166863 transitions.
[2021-11-23 14:10:56,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:10:56,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 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 1843
[2021-11-23 14:10:56,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:10:56,703 INFO  L225             Difference]: With dead ends: 135352
[2021-11-23 14:10:56,703 INFO  L226             Difference]: Without dead ends: 66830
[2021-11-23 14:10:56,757 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
[2021-11-23 14:10:56,783 INFO  L933         BasicCegarLoop]: 2892 mSDtfsCounter, 2533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 1550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1550 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2021-11-23 14:10:56,784 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2533 Valid, 3001 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1550 Valid, 4849 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time]
[2021-11-23 14:10:56,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66830 states.
[2021-11-23 14:10:57,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66830 to 66825.
[2021-11-23 14:10:57,623 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66825 states, 66824 states have (on average 1.1550341194780318) internal successors, (77184), 66824 states have internal predecessors, (77184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:57,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66825 states to 66825 states and 77184 transitions.
[2021-11-23 14:10:57,987 INFO  L78                 Accepts]: Start accepts. Automaton has 66825 states and 77184 transitions. Word has length 1843
[2021-11-23 14:10:57,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:10:57,989 INFO  L470      AbstractCegarLoop]: Abstraction has 66825 states and 77184 transitions.
[2021-11-23 14:10:57,989 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:10:57,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 66825 states and 77184 transitions.
[2021-11-23 14:10:58,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1881
[2021-11-23 14:10:58,115 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:10:58,117 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-23 14:10:58,117 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-23 14:10:58,118 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:10:58,119 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:10:58,120 INFO  L85        PathProgramCache]: Analyzing trace with hash -1949372730, now seen corresponding path program 1 times
[2021-11-23 14:10:58,120 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:10:58,120 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319635948]
[2021-11-23 14:10:58,121 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:10:58,121 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:10:58,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:10:59,151 INFO  L134       CoverageAnalysis]: Checked inductivity of 319 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked.
[2021-11-23 14:10:59,151 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:10:59,152 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319635948]
[2021-11-23 14:10:59,152 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319635948] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:10:59,152 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:10:59,153 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:10:59,153 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315423016]
[2021-11-23 14:10:59,153 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:10:59,157 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:10:59,157 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:10:59,158 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:10:59,158 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:10:59,159 INFO  L87              Difference]: Start difference. First operand 66825 states and 77184 transitions. Second operand  has 3 states, 3 states have (on average 613.3333333333334) internal successors, (1840), 3 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:06,754 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:11:06,755 INFO  L93              Difference]: Finished difference Result 191398 states and 221790 transitions.
[2021-11-23 14:11:06,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:11:06,755 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 613.3333333333334) internal successors, (1840), 3 states have internal predecessors, (1840), 0 states have call successors, (0), 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 1880
[2021-11-23 14:11:06,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:11:06,927 INFO  L225             Difference]: With dead ends: 191398
[2021-11-23 14:11:06,927 INFO  L226             Difference]: Without dead ends: 126273
[2021-11-23 14:11:07,153 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
[2021-11-23 14:11:07,155 INFO  L933         BasicCegarLoop]: 2049 mSDtfsCounter, 1796 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 5600 mSolverCounterSat, 1515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 7115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 5600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2021-11-23 14:11:07,156 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 2300 Invalid, 7115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1515 Valid, 5600 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2021-11-23 14:11:07,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 126273 states.
[2021-11-23 14:11:08,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 126273 to 126261.
[2021-11-23 14:11:09,080 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 126261 states, 126260 states have (on average 1.100815776968161) internal successors, (138989), 126260 states have internal predecessors, (138989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:09,295 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126261 states to 126261 states and 138989 transitions.
[2021-11-23 14:11:09,295 INFO  L78                 Accepts]: Start accepts. Automaton has 126261 states and 138989 transitions. Word has length 1880
[2021-11-23 14:11:09,296 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:11:09,296 INFO  L470      AbstractCegarLoop]: Abstraction has 126261 states and 138989 transitions.
[2021-11-23 14:11:09,296 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 613.3333333333334) internal successors, (1840), 3 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:09,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 126261 states and 138989 transitions.
[2021-11-23 14:11:09,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1915
[2021-11-23 14:11:09,439 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:11:09,441 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:11:09,441 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-23 14:11:09,441 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:11:09,442 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:11:09,443 INFO  L85        PathProgramCache]: Analyzing trace with hash -241299267, now seen corresponding path program 1 times
[2021-11-23 14:11:09,443 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:11:09,443 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135795395]
[2021-11-23 14:11:09,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:11:09,444 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:11:09,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:11:10,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 352 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked.
[2021-11-23 14:11:10,722 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:11:10,723 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135795395]
[2021-11-23 14:11:10,723 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135795395] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:11:10,723 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:11:10,724 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-23 14:11:10,724 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586190669]
[2021-11-23 14:11:10,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:11:10,728 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:11:10,728 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:11:10,729 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:11:10,729 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:11:10,730 INFO  L87              Difference]: Start difference. First operand 126261 states and 138989 transitions. Second operand  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:17,906 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:11:17,906 INFO  L93              Difference]: Finished difference Result 293265 states and 321896 transitions.
[2021-11-23 14:11:17,907 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:11:17,907 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1914
[2021-11-23 14:11:17,907 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:11:18,102 INFO  L225             Difference]: With dead ends: 293265
[2021-11-23 14:11:18,102 INFO  L226             Difference]: Without dead ends: 151640
[2021-11-23 14:11:18,172 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
[2021-11-23 14:11:18,175 INFO  L933         BasicCegarLoop]: 1041 mSDtfsCounter, 3076 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4769 mSolverCounterSat, 1188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 5957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 4769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2021-11-23 14:11:18,176 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3076 Valid, 1120 Invalid, 5957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 4769 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2021-11-23 14:11:18,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151640 states.
[2021-11-23 14:11:20,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151640 to 148243.
[2021-11-23 14:11:20,108 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 148243 states, 148242 states have (on average 1.0690627487486677) internal successors, (158480), 148242 states have internal predecessors, (158480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:20,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148243 states to 148243 states and 158480 transitions.
[2021-11-23 14:11:20,299 INFO  L78                 Accepts]: Start accepts. Automaton has 148243 states and 158480 transitions. Word has length 1914
[2021-11-23 14:11:20,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:11:20,299 INFO  L470      AbstractCegarLoop]: Abstraction has 148243 states and 158480 transitions.
[2021-11-23 14:11:20,300 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 2 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:20,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 148243 states and 158480 transitions.
[2021-11-23 14:11:20,944 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2074
[2021-11-23 14:11:20,944 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:11:20,949 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2021-11-23 14:11:20,950 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-23 14:11:20,950 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:11:20,951 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:11:20,952 INFO  L85        PathProgramCache]: Analyzing trace with hash 2116308890, now seen corresponding path program 1 times
[2021-11-23 14:11:20,957 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:11:20,957 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667886387]
[2021-11-23 14:11:20,958 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:11:20,958 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:11:21,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:11:22,220 INFO  L134       CoverageAnalysis]: Checked inductivity of 583 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-23 14:11:22,220 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:11:22,220 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667886387]
[2021-11-23 14:11:22,221 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667886387] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:11:22,221 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:11:22,222 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:11:22,222 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785613372]
[2021-11-23 14:11:22,222 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:11:22,225 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:11:22,226 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:11:22,226 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:11:22,226 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:11:22,227 INFO  L87              Difference]: Start difference. First operand 148243 states and 158480 transitions. Second operand  has 3 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:29,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:11:29,755 INFO  L93              Difference]: Finished difference Result 301585 states and 322313 transitions.
[2021-11-23 14:11:29,755 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:11:29,756 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 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 2073
[2021-11-23 14:11:29,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:11:29,970 INFO  L225             Difference]: With dead ends: 301585
[2021-11-23 14:11:29,970 INFO  L226             Difference]: Without dead ends: 155042
[2021-11-23 14:11:30,037 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
[2021-11-23 14:11:30,038 INFO  L933         BasicCegarLoop]: 3649 mSDtfsCounter, 1701 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 5247 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 5247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time
[2021-11-23 14:11:30,039 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1701 Valid, 3862 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 5247 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time]
[2021-11-23 14:11:30,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155042 states.
[2021-11-23 14:11:31,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155042 to 155035.
[2021-11-23 14:11:32,293 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 155035 states, 155034 states have (on average 1.0667079479340016) internal successors, (165376), 155034 states have internal predecessors, (165376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:32,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155035 states to 155035 states and 165376 transitions.
[2021-11-23 14:11:32,651 INFO  L78                 Accepts]: Start accepts. Automaton has 155035 states and 165376 transitions. Word has length 2073
[2021-11-23 14:11:32,652 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:11:32,652 INFO  L470      AbstractCegarLoop]: Abstraction has 155035 states and 165376 transitions.
[2021-11-23 14:11:32,652 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:32,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 155035 states and 165376 transitions.
[2021-11-23 14:11:32,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2085
[2021-11-23 14:11:32,782 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:11:32,784 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:11:32,784 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-23 14:11:32,785 INFO  L402      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:11:32,785 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:11:32,786 INFO  L85        PathProgramCache]: Analyzing trace with hash -490737985, now seen corresponding path program 1 times
[2021-11-23 14:11:32,786 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:11:32,786 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499415886]
[2021-11-23 14:11:32,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:11:32,786 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:11:32,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:11:34,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 627 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-23 14:11:34,508 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:11:34,508 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499415886]
[2021-11-23 14:11:34,509 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499415886] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:11:34,509 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:11:34,510 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:11:34,510 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064921260]
[2021-11-23 14:11:34,510 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:11:34,537 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:11:34,537 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:11:34,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:11:34,539 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:11:34,540 INFO  L87              Difference]: Start difference. First operand 155035 states and 165376 transitions. Second operand  has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:42,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:11:42,192 INFO  L93              Difference]: Finished difference Result 367792 states and 394323 transitions.
[2021-11-23 14:11:42,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:11:42,193 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 0 states have call successors, (0), 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 2084
[2021-11-23 14:11:42,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:11:42,459 INFO  L225             Difference]: With dead ends: 367792
[2021-11-23 14:11:42,460 INFO  L226             Difference]: Without dead ends: 214457
[2021-11-23 14:11:42,516 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:11:42,517 INFO  L933         BasicCegarLoop]: 3521 mSDtfsCounter, 1889 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 5213 mSolverCounterSat, 1176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 6389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1176 IncrementalHoareTripleChecker+Valid, 5213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2021-11-23 14:11:42,517 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 3809 Invalid, 6389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1176 Valid, 5213 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2021-11-23 14:11:42,705 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 214457 states.
[2021-11-23 14:11:45,204 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 214457 to 211059.
[2021-11-23 14:11:45,330 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 211059 states, 211058 states have (on average 1.0593912573794881) internal successors, (223593), 211058 states have internal predecessors, (223593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:46,402 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 211059 states to 211059 states and 223593 transitions.
[2021-11-23 14:11:46,403 INFO  L78                 Accepts]: Start accepts. Automaton has 211059 states and 223593 transitions. Word has length 2084
[2021-11-23 14:11:46,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-23 14:11:46,404 INFO  L470      AbstractCegarLoop]: Abstraction has 211059 states and 223593 transitions.
[2021-11-23 14:11:46,405 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:46,405 INFO  L276                IsEmpty]: Start isEmpty. Operand 211059 states and 223593 transitions.
[2021-11-23 14:11:46,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2100
[2021-11-23 14:11:46,681 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-23 14:11:46,683 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-23 14:11:46,684 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-11-23 14:11:46,684 INFO  L402      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-23 14:11:46,684 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-23 14:11:46,685 INFO  L85        PathProgramCache]: Analyzing trace with hash -1525609111, now seen corresponding path program 1 times
[2021-11-23 14:11:46,685 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-23 14:11:46,685 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611656400]
[2021-11-23 14:11:46,686 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-23 14:11:46,686 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-23 14:11:46,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-23 14:11:47,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 687 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-23 14:11:47,875 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-23 14:11:47,875 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611656400]
[2021-11-23 14:11:47,875 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611656400] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-23 14:11:47,875 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-23 14:11:47,876 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-23 14:11:47,876 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532424742]
[2021-11-23 14:11:47,876 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-23 14:11:47,879 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-23 14:11:47,879 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-23 14:11:47,880 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-23 14:11:47,880 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:11:47,881 INFO  L87              Difference]: Start difference. First operand 211059 states and 223593 transitions. Second operand  has 3 states, 3 states have (on average 652.3333333333334) internal successors, (1957), 3 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-23 14:11:56,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-23 14:11:56,697 INFO  L93              Difference]: Finished difference Result 457834 states and 486226 transitions.
[2021-11-23 14:11:56,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-23 14:11:56,698 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 652.3333333333334) internal successors, (1957), 3 states have internal predecessors, (1957), 0 states have call successors, (0), 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 2099
[2021-11-23 14:11:56,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-23 14:11:57,021 INFO  L225             Difference]: With dead ends: 457834
[2021-11-23 14:11:57,021 INFO  L226             Difference]: Without dead ends: 248475
[2021-11-23 14:11:57,119 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-23 14:11:57,120 INFO  L933         BasicCegarLoop]: 3472 mSDtfsCounter, 1768 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4983 mSolverCounterSat, 1639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 6622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 4983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time
[2021-11-23 14:11:57,120 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1768 Valid, 3665 Invalid, 6622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1639 Valid, 4983 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time]
[2021-11-23 14:11:57,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 248475 states.