./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label46.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 53f42b1a
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF --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 32b7b6c9b4494e069f5d0a787e6cfc27aa7cef4833705992f6231374f06a0fb0
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-53f42b1
[2021-11-20 06:53:13,817 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-11-20 06:53:13,821 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-20 06:53:13,874 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-20 06:53:13,875 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-20 06:53:13,876 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-20 06:53:13,878 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-20 06:53:13,882 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-20 06:53:13,885 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-20 06:53:13,886 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-20 06:53:13,888 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-11-20 06:53:13,890 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-20 06:53:13,890 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-20 06:53:13,892 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-20 06:53:13,894 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-20 06:53:13,896 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-20 06:53:13,898 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-20 06:53:13,900 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-20 06:53:13,903 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-20 06:53:13,906 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-20 06:53:13,909 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-20 06:53:13,912 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-20 06:53:13,919 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-11-20 06:53:13,921 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-20 06:53:13,925 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-20 06:53:13,926 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-20 06:53:13,926 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-20 06:53:13,928 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-20 06:53:13,928 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-20 06:53:13,930 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-20 06:53:13,930 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-20 06:53:13,931 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-20 06:53:13,933 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-20 06:53:13,939 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-20 06:53:13,942 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-20 06:53:13,942 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-20 06:53:13,943 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-20 06:53:13,944 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-20 06:53:13,944 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-20 06:53:13,945 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-20 06:53:13,946 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-11-20 06:53:13,947 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-20 06:53:13,993 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-11-20 06:53:13,993 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-20 06:53:13,994 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-20 06:53:13,994 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-20 06:53:13,995 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-20 06:53:13,995 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-20 06:53:13,996 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-20 06:53:13,996 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-11-20 06:53:13,997 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-11-20 06:53:13,997 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-20 06:53:13,997 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-11-20 06:53:13,998 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-11-20 06:53:13,998 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-11-20 06:53:13,998 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-11-20 06:53:13,998 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-11-20 06:53:13,999 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-20 06:53:13,999 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-11-20 06:53:13,999 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-11-20 06:53:14,000 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-11-20 06:53:14,000 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-11-20 06:53:14,000 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-11-20 06:53:14,000 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-20 06:53:14,001 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-11-20 06:53:14,001 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-11-20 06:53:14,001 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 06:53:14,002 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-20 06:53:14,002 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-11-20 06:53:14,002 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-20 06:53:14,002 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-11-20 06:53:14,003 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-20 06:53:14,003 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-11-20 06:53:14,003 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-20 06:53:14,004 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-20 06:53:14,004 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-11-20 06:53:14,004 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_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/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_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF
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 -> 32b7b6c9b4494e069f5d0a787e6cfc27aa7cef4833705992f6231374f06a0fb0
[2021-11-20 06:53:14,322 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-20 06:53:14,377 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-20 06:53:14,380 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-20 06:53:14,382 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-11-20 06:53:14,386 INFO  L275        PluginConnector]: CDTParser initialized
[2021-11-20 06:53:14,388 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/eca-rers2012/Problem05_label46.c
[2021-11-20 06:53:14,470 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/data/c2c8181b7/051f26e812f04ab1bf94430de76e5e44/FLAGd00f237c0
[2021-11-20 06:53:15,813 INFO  L306              CDTParser]: Found 1 translation units.
[2021-11-20 06:53:15,815 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/sv-benchmarks/c/eca-rers2012/Problem05_label46.c
[2021-11-20 06:53:15,890 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/data/c2c8181b7/051f26e812f04ab1bf94430de76e5e44/FLAGd00f237c0
[2021-11-20 06:53:15,967 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/data/c2c8181b7/051f26e812f04ab1bf94430de76e5e44
[2021-11-20 06:53:15,970 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-20 06:53:15,973 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-20 06:53:15,975 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-20 06:53:15,975 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-20 06:53:15,979 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-20 06:53:15,980 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:53:15" (1/1) ...
[2021-11-20 06:53:15,981 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef82b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:15, skipping insertion in model container
[2021-11-20 06:53:15,981 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:53:15" (1/1) ...
[2021-11-20 06:53:15,990 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-11-20 06:53:16,235 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-11-20 06:53:19,088 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_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/sv-benchmarks/c/eca-rers2012/Problem05_label46.c[382014,382027]
[2021-11-20 06:53:19,111 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-20 06:53:19,122 INFO  L203         MainTranslator]: Completed pre-run
[2021-11-20 06:53:20,612 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_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/sv-benchmarks/c/eca-rers2012/Problem05_label46.c[382014,382027]
[2021-11-20 06:53:20,616 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-11-20 06:53:20,701 INFO  L208         MainTranslator]: Completed translation
[2021-11-20 06:53:20,702 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20 WrapperNode
[2021-11-20 06:53:20,702 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-20 06:53:20,705 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-20 06:53:20,706 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-20 06:53:20,706 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-20 06:53:20,716 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:20,860 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,327 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2021-11-20 06:53:21,327 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-20 06:53:21,328 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-20 06:53:21,329 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-20 06:53:21,329 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-11-20 06:53:21,338 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,338 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,423 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,424 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,682 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,727 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,796 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,964 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-20 06:53:21,965 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-20 06:53:21,965 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-11-20 06:53:21,965 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-11-20 06:53:21,966 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (1/1) ...
[2021-11-20 06:53:21,973 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-20 06:53:21,985 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/z3
[2021-11-20 06:53:22,004 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-20 06:53:22,030 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e89dea3-7ecf-4554-a639-d2155f4d4fdb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-20 06:53:22,053 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-11-20 06:53:22,053 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-20 06:53:22,053 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-20 06:53:22,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-20 06:53:22,165 INFO  L236             CfgBuilder]: Building ICFG
[2021-11-20 06:53:22,167 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-11-20 06:53:30,252 INFO  L277             CfgBuilder]: Performing block encoding
[2021-11-20 06:53:30,296 INFO  L296             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-20 06:53:30,296 INFO  L301             CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-20 06:53:30,303 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:53:30 BoogieIcfgContainer
[2021-11-20 06:53:30,303 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-20 06:53:30,308 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-20 06:53:30,309 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-11-20 06:53:30,313 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-11-20 06:53:30,313 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:53:15" (1/3) ...
[2021-11-20 06:53:30,315 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42da1038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:53:30, skipping insertion in model container
[2021-11-20 06:53:30,315 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:20" (2/3) ...
[2021-11-20 06:53:30,315 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42da1038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:53:30, skipping insertion in model container
[2021-11-20 06:53:30,316 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:53:30" (3/3) ...
[2021-11-20 06:53:30,317 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label46.c
[2021-11-20 06:53:30,323 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-20 06:53:30,324 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-20 06:53:30,405 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-20 06:53:30,417 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
[2021-11-20 06:53:30,418 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-20 06:53:30,486 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)
[2021-11-20 06:53:30,656 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1691
[2021-11-20 06:53:30,657 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:53:30,659 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, 1, 1, 1]
[2021-11-20 06:53:30,660 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:53:30,666 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:53:30,667 INFO  L85        PathProgramCache]: Analyzing trace with hash 306158282, now seen corresponding path program 1 times
[2021-11-20 06:53:30,677 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:53:30,677 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057130114]
[2021-11-20 06:53:30,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:53:30,679 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:53:31,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:53:33,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 06:53:33,965 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:53:33,965 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057130114]
[2021-11-20 06:53:33,966 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057130114] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:53:33,967 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:53:33,967 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:53:33,969 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964621994]
[2021-11-20 06:53:33,970 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:53:33,979 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-20 06:53:33,980 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:53:34,007 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-20 06:53:34,008 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-20 06:53:34,017 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 422.5) internal successors, (1690), 3 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:53:51,109 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:53:51,109 INFO  L93              Difference]: Finished difference Result 9533 states and 18374 transitions.
[2021-11-20 06:53:51,118 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-11-20 06:53:51,120 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 422.5) internal successors, (1690), 3 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1690
[2021-11-20 06:53:51,132 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:53:51,207 INFO  L225             Difference]: With dead ends: 9533
[2021-11-20 06:53:51,207 INFO  L226             Difference]: Without dead ends: 7278
[2021-11-20 06:53:51,220 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-20 06:53:51,226 INFO  L933         BasicCegarLoop]: 1195 mSDtfsCounter, 4221 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 10452 mSolverCounterSat, 5829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4221 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 16281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5829 IncrementalHoareTripleChecker+Valid, 10452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time
[2021-11-20 06:53:51,227 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4221 Valid, 1651 Invalid, 16281 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5829 Valid, 10452 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time]
[2021-11-20 06:53:51,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7278 states.
[2021-11-20 06:53:51,567 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 5606.
[2021-11-20 06:53:51,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5606 states, 5605 states have (on average 1.527921498661909) internal successors, (8564), 5605 states have internal predecessors, (8564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:53:51,605 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 8564 transitions.
[2021-11-20 06:53:51,607 INFO  L78                 Accepts]: Start accepts. Automaton has 5606 states and 8564 transitions. Word has length 1690
[2021-11-20 06:53:51,612 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:53:51,612 INFO  L470      AbstractCegarLoop]: Abstraction has 5606 states and 8564 transitions.
[2021-11-20 06:53:51,613 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 422.5) internal successors, (1690), 3 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:53:51,614 INFO  L276                IsEmpty]: Start isEmpty. Operand 5606 states and 8564 transitions.
[2021-11-20 06:53:51,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1811
[2021-11-20 06:53:51,773 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:53:51,774 INFO  L514         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-20 06:53:51,775 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-20 06:53:51,776 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:53:51,778 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:53:51,779 INFO  L85        PathProgramCache]: Analyzing trace with hash -747135842, now seen corresponding path program 1 times
[2021-11-20 06:53:51,779 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:53:51,779 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266410948]
[2021-11-20 06:53:51,780 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:53:51,780 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:53:51,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:53:53,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-20 06:53:53,178 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:53:53,178 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266410948]
[2021-11-20 06:53:53,179 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266410948] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:53:53,179 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:53:53,180 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:53:53,180 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559739502]
[2021-11-20 06:53:53,180 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:53:53,186 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:53:53,187 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:53:53,187 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:53:53,188 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:53:53,191 INFO  L87              Difference]: Start difference. First operand 5606 states and 8564 transitions. Second operand  has 3 states, 3 states have (on average 603.3333333333334) internal successors, (1810), 3 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:00,815 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:54:00,815 INFO  L93              Difference]: Finished difference Result 14759 states and 23509 transitions.
[2021-11-20 06:54:00,816 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:54:00,817 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 603.3333333333334) internal successors, (1810), 3 states have internal predecessors, (1810), 0 states have call successors, (0), 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 1810
[2021-11-20 06:54:00,818 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:54:00,879 INFO  L225             Difference]: With dead ends: 14759
[2021-11-20 06:54:00,879 INFO  L226             Difference]: Without dead ends: 9155
[2021-11-20 06:54:00,890 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
[2021-11-20 06:54:00,892 INFO  L933         BasicCegarLoop]: 1005 mSDtfsCounter, 2108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5310 mSolverCounterSat, 2632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 7942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2632 IncrementalHoareTripleChecker+Valid, 5310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2021-11-20 06:54:00,893 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 1173 Invalid, 7942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2632 Valid, 5310 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2021-11-20 06:54:00,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9155 states.
[2021-11-20 06:54:01,144 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9155 to 9070.
[2021-11-20 06:54:01,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9070 states, 9069 states have (on average 1.562906604917852) internal successors, (14174), 9069 states have internal predecessors, (14174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:01,199 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9070 states to 9070 states and 14174 transitions.
[2021-11-20 06:54:01,199 INFO  L78                 Accepts]: Start accepts. Automaton has 9070 states and 14174 transitions. Word has length 1810
[2021-11-20 06:54:01,200 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:54:01,201 INFO  L470      AbstractCegarLoop]: Abstraction has 9070 states and 14174 transitions.
[2021-11-20 06:54:01,203 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 603.3333333333334) internal successors, (1810), 3 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:01,203 INFO  L276                IsEmpty]: Start isEmpty. Operand 9070 states and 14174 transitions.
[2021-11-20 06:54:01,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1836
[2021-11-20 06:54:01,259 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:54:01,261 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2021-11-20 06:54:01,262 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-20 06:54:01,262 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:54:01,263 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:54:01,264 INFO  L85        PathProgramCache]: Analyzing trace with hash 457454067, now seen corresponding path program 1 times
[2021-11-20 06:54:01,264 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:54:01,265 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071011629]
[2021-11-20 06:54:01,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:54:01,266 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:54:01,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:54:03,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 179 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2021-11-20 06:54:03,921 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:54:03,921 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071011629]
[2021-11-20 06:54:03,921 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071011629] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:54:03,922 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:54:03,923 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-20 06:54:03,923 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537923919]
[2021-11-20 06:54:03,923 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:54:03,926 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-20 06:54:03,927 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:54:03,927 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-20 06:54:03,928 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-20 06:54:03,929 INFO  L87              Difference]: Start difference. First operand 9070 states and 14174 transitions. Second operand  has 5 states, 5 states have (on average 360.2) internal successors, (1801), 4 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)
[2021-11-20 06:54:20,720 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:54:20,720 INFO  L93              Difference]: Finished difference Result 41877 states and 69337 transitions.
[2021-11-20 06:54:20,721 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-11-20 06:54:20,721 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 360.2) internal successors, (1801), 4 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 1835
[2021-11-20 06:54:20,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:54:20,831 INFO  L225             Difference]: With dead ends: 41877
[2021-11-20 06:54:20,831 INFO  L226             Difference]: Without dead ends: 32809
[2021-11-20 06:54:20,849 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-11-20 06:54:20,850 INFO  L933         BasicCegarLoop]: 1476 mSDtfsCounter, 5408 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 20166 mSolverCounterSat, 4657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5408 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 24823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4657 IncrementalHoareTripleChecker+Valid, 20166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time
[2021-11-20 06:54:20,851 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5408 Valid, 2416 Invalid, 24823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4657 Valid, 20166 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time]
[2021-11-20 06:54:20,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32809 states.
[2021-11-20 06:54:21,361 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32809 to 31153.
[2021-11-20 06:54:21,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31153 states, 31152 states have (on average 1.3006227529532615) internal successors, (40517), 31152 states have internal predecessors, (40517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:21,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31153 states to 31153 states and 40517 transitions.
[2021-11-20 06:54:21,467 INFO  L78                 Accepts]: Start accepts. Automaton has 31153 states and 40517 transitions. Word has length 1835
[2021-11-20 06:54:21,469 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:54:21,469 INFO  L470      AbstractCegarLoop]: Abstraction has 31153 states and 40517 transitions.
[2021-11-20 06:54:21,470 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 360.2) internal successors, (1801), 4 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)
[2021-11-20 06:54:21,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 31153 states and 40517 transitions.
[2021-11-20 06:54:21,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1921
[2021-11-20 06:54:21,564 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:54:21,566 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 06:54:21,566 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-20 06:54:21,567 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:54:21,568 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:54:21,569 INFO  L85        PathProgramCache]: Analyzing trace with hash 1918608174, now seen corresponding path program 1 times
[2021-11-20 06:54:21,569 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:54:21,570 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407306303]
[2021-11-20 06:54:21,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:54:21,570 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:54:21,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:54:22,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 358 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-11-20 06:54:22,490 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:54:22,490 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407306303]
[2021-11-20 06:54:22,490 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407306303] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:54:22,491 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:54:22,491 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:54:22,491 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29210384]
[2021-11-20 06:54:22,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:54:22,494 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:54:22,495 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:54:22,495 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:54:22,496 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:54:22,497 INFO  L87              Difference]: Start difference. First operand 31153 states and 40517 transitions. Second operand  has 3 states, 3 states have (on average 636.6666666666666) internal successors, (1910), 3 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:28,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:54:28,219 INFO  L93              Difference]: Finished difference Result 75973 states and 98840 transitions.
[2021-11-20 06:54:28,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:54:28,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 636.6666666666666) internal successors, (1910), 3 states have internal predecessors, (1910), 0 states have call successors, (0), 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 1920
[2021-11-20 06:54:28,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:54:28,475 INFO  L225             Difference]: With dead ends: 75973
[2021-11-20 06:54:28,476 INFO  L226             Difference]: Without dead ends: 44822
[2021-11-20 06:54:28,504 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
[2021-11-20 06:54:28,505 INFO  L933         BasicCegarLoop]: 3680 mSDtfsCounter, 1768 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 6035 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 6952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 6035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time
[2021-11-20 06:54:28,506 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1768 Valid, 3911 Invalid, 6952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 6035 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time]
[2021-11-20 06:54:28,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44822 states.
[2021-11-20 06:54:29,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44822 to 44750.
[2021-11-20 06:54:29,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44750 states, 44749 states have (on average 1.2544861337683524) internal successors, (56137), 44749 states have internal predecessors, (56137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:29,256 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44750 states to 44750 states and 56137 transitions.
[2021-11-20 06:54:29,257 INFO  L78                 Accepts]: Start accepts. Automaton has 44750 states and 56137 transitions. Word has length 1920
[2021-11-20 06:54:29,257 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:54:29,257 INFO  L470      AbstractCegarLoop]: Abstraction has 44750 states and 56137 transitions.
[2021-11-20 06:54:29,258 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 636.6666666666666) internal successors, (1910), 3 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:29,258 INFO  L276                IsEmpty]: Start isEmpty. Operand 44750 states and 56137 transitions.
[2021-11-20 06:54:29,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1950
[2021-11-20 06:54:29,367 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:54:29,368 INFO  L514         BasicCegarLoop]: trace histogram [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, 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, 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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]
[2021-11-20 06:54:29,369 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-20 06:54:29,369 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:54:29,369 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:54:29,370 INFO  L85        PathProgramCache]: Analyzing trace with hash -19925696, now seen corresponding path program 1 times
[2021-11-20 06:54:29,371 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:54:29,371 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566682958]
[2021-11-20 06:54:29,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:54:29,371 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:54:29,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:54:30,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 455 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked.
[2021-11-20 06:54:30,179 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:54:30,179 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566682958]
[2021-11-20 06:54:30,179 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566682958] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:54:30,179 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:54:30,180 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-20 06:54:30,180 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992310419]
[2021-11-20 06:54:30,181 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:54:30,184 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:54:30,184 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:54:30,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:54:30,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:54:30,186 INFO  L87              Difference]: Start difference. First operand 44750 states and 56137 transitions. Second operand  has 3 states, 3 states have (on average 601.0) internal successors, (1803), 2 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)
[2021-11-20 06:54:35,588 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:54:35,588 INFO  L93              Difference]: Finished difference Result 91190 states and 113971 transitions.
[2021-11-20 06:54:35,589 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:54:35,589 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 601.0) internal successors, (1803), 2 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 1949
[2021-11-20 06:54:35,589 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:54:35,671 INFO  L225             Difference]: With dead ends: 91190
[2021-11-20 06:54:35,671 INFO  L226             Difference]: Without dead ends: 44744
[2021-11-20 06:54:35,708 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
[2021-11-20 06:54:35,709 INFO  L933         BasicCegarLoop]: 1522 mSDtfsCounter, 2596 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 1710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1710 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2021-11-20 06:54:35,710 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2596 Valid, 1665 Invalid, 6182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1710 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2021-11-20 06:54:35,754 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44744 states.
[2021-11-20 06:54:36,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44744 to 44742.
[2021-11-20 06:54:36,476 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44742 states, 44741 states have (on average 1.161529693122639) internal successors, (51968), 44741 states have internal predecessors, (51968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:36,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44742 states to 44742 states and 51968 transitions.
[2021-11-20 06:54:36,544 INFO  L78                 Accepts]: Start accepts. Automaton has 44742 states and 51968 transitions. Word has length 1949
[2021-11-20 06:54:36,544 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:54:36,545 INFO  L470      AbstractCegarLoop]: Abstraction has 44742 states and 51968 transitions.
[2021-11-20 06:54:36,545 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 601.0) internal successors, (1803), 2 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)
[2021-11-20 06:54:36,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 44742 states and 51968 transitions.
[2021-11-20 06:54:36,625 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2111
[2021-11-20 06:54:36,625 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:54:36,627 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1]
[2021-11-20 06:54:36,627 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-20 06:54:36,628 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:54:36,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:54:36,629 INFO  L85        PathProgramCache]: Analyzing trace with hash -437887273, now seen corresponding path program 1 times
[2021-11-20 06:54:36,635 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:54:36,635 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334294695]
[2021-11-20 06:54:36,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:54:36,636 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:54:36,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:54:38,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 714 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-20 06:54:38,052 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:54:38,052 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334294695]
[2021-11-20 06:54:38,053 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334294695] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:54:38,053 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:54:38,053 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:54:38,053 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170309495]
[2021-11-20 06:54:38,054 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:54:38,056 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:54:38,056 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:54:38,057 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:54:38,057 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:54:38,058 INFO  L87              Difference]: Start difference. First operand 44742 states and 51968 transitions. Second operand  has 3 states, 3 states have (on average 656.0) internal successors, (1968), 3 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:44,616 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:54:44,616 INFO  L93              Difference]: Finished difference Result 126860 states and 148116 transitions.
[2021-11-20 06:54:44,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:54:44,618 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 656.0) internal successors, (1968), 3 states have internal predecessors, (1968), 0 states have call successors, (0), 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 2110
[2021-11-20 06:54:44,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:54:44,715 INFO  L225             Difference]: With dead ends: 126860
[2021-11-20 06:54:44,715 INFO  L226             Difference]: Without dead ends: 82120
[2021-11-20 06:54:44,739 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
[2021-11-20 06:54:44,740 INFO  L933         BasicCegarLoop]: 957 mSDtfsCounter, 2279 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 5099 mSolverCounterSat, 2664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 7763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2664 IncrementalHoareTripleChecker+Valid, 5099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2021-11-20 06:54:44,740 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 1057 Invalid, 7763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2664 Valid, 5099 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2021-11-20 06:54:44,812 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82120 states.
[2021-11-20 06:54:45,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82120 to 71915.
[2021-11-20 06:54:45,917 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71915 states, 71914 states have (on average 1.1788108017910282) internal successors, (84773), 71914 states have internal predecessors, (84773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:46,266 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71915 states to 71915 states and 84773 transitions.
[2021-11-20 06:54:46,266 INFO  L78                 Accepts]: Start accepts. Automaton has 71915 states and 84773 transitions. Word has length 2110
[2021-11-20 06:54:46,267 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:54:46,267 INFO  L470      AbstractCegarLoop]: Abstraction has 71915 states and 84773 transitions.
[2021-11-20 06:54:46,268 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 656.0) internal successors, (1968), 3 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:46,268 INFO  L276                IsEmpty]: Start isEmpty. Operand 71915 states and 84773 transitions.
[2021-11-20 06:54:46,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2118
[2021-11-20 06:54:46,447 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:54:46,449 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 06:54:46,450 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-20 06:54:46,450 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:54:46,450 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:54:46,451 INFO  L85        PathProgramCache]: Analyzing trace with hash -39725885, now seen corresponding path program 1 times
[2021-11-20 06:54:46,451 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:54:46,452 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100520104]
[2021-11-20 06:54:46,452 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:54:46,452 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:54:46,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:54:47,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 735 backedges. 556 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-20 06:54:47,664 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:54:47,664 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100520104]
[2021-11-20 06:54:47,664 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100520104] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:54:47,664 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:54:47,665 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:54:47,665 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108385958]
[2021-11-20 06:54:47,665 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:54:47,668 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:54:47,668 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:54:47,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:54:47,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:54:47,669 INFO  L87              Difference]: Start difference. First operand 71915 states and 84773 transitions. Second operand  has 3 states, 3 states have (on average 658.3333333333334) internal successors, (1975), 3 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:53,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:54:53,896 INFO  L93              Difference]: Finished difference Result 165971 states and 196262 transitions.
[2021-11-20 06:54:53,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:54:53,896 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 658.3333333333334) internal successors, (1975), 3 states have internal predecessors, (1975), 0 states have call successors, (0), 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 2117
[2021-11-20 06:54:53,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:54:53,997 INFO  L225             Difference]: With dead ends: 165971
[2021-11-20 06:54:53,997 INFO  L226             Difference]: Without dead ends: 94058
[2021-11-20 06:54:54,151 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
[2021-11-20 06:54:54,152 INFO  L933         BasicCegarLoop]: 3763 mSDtfsCounter, 1813 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 6981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1624 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2021-11-20 06:54:54,152 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 3999 Invalid, 6981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1624 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2021-11-20 06:54:54,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94058 states.
[2021-11-20 06:54:55,085 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94058 to 92296.
[2021-11-20 06:54:55,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92296 states, 92295 states have (on average 1.1646026328620185) internal successors, (107487), 92295 states have internal predecessors, (107487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:55,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92296 states to 92296 states and 107487 transitions.
[2021-11-20 06:54:55,250 INFO  L78                 Accepts]: Start accepts. Automaton has 92296 states and 107487 transitions. Word has length 2117
[2021-11-20 06:54:55,251 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:54:55,251 INFO  L470      AbstractCegarLoop]: Abstraction has 92296 states and 107487 transitions.
[2021-11-20 06:54:55,251 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 658.3333333333334) internal successors, (1975), 3 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:54:55,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 92296 states and 107487 transitions.
[2021-11-20 06:54:55,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2135
[2021-11-20 06:54:55,661 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:54:55,676 INFO  L514         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1]
[2021-11-20 06:54:55,676 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-20 06:54:55,676 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:54:55,677 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:54:55,678 INFO  L85        PathProgramCache]: Analyzing trace with hash 1004660662, now seen corresponding path program 1 times
[2021-11-20 06:54:55,678 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:54:55,678 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114115712]
[2021-11-20 06:54:55,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:54:55,679 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:54:55,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:54:56,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 841 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked.
[2021-11-20 06:54:56,723 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:54:56,723 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114115712]
[2021-11-20 06:54:56,723 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114115712] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:54:56,723 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:54:56,724 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-20 06:54:56,724 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848487353]
[2021-11-20 06:54:56,724 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:54:56,728 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:54:56,728 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:54:56,728 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:54:56,729 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:54:56,729 INFO  L87              Difference]: Start difference. First operand 92296 states and 107487 transitions. Second operand  has 3 states, 3 states have (on average 643.0) internal successors, (1929), 2 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:03,053 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:55:03,053 INFO  L93              Difference]: Finished difference Result 227032 states and 267887 transitions.
[2021-11-20 06:55:03,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:55:03,054 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 643.0) internal successors, (1929), 2 states have internal predecessors, (1929), 0 states have call successors, (0), 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 2134
[2021-11-20 06:55:03,054 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:55:03,206 INFO  L225             Difference]: With dead ends: 227032
[2021-11-20 06:55:03,206 INFO  L226             Difference]: Without dead ends: 134738
[2021-11-20 06:55:03,239 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
[2021-11-20 06:55:03,240 INFO  L933         BasicCegarLoop]: 1045 mSDtfsCounter, 2942 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4769 mSolverCounterSat, 2108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 6877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2108 IncrementalHoareTripleChecker+Valid, 4769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2021-11-20 06:55:03,240 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 1126 Invalid, 6877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2108 Valid, 4769 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2021-11-20 06:55:03,332 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 134738 states.
[2021-11-20 06:55:04,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 134738 to 134738.
[2021-11-20 06:55:05,014 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 134738 states, 134737 states have (on average 1.1638822298255118) internal successors, (156818), 134737 states have internal predecessors, (156818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:05,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 134738 states to 134738 states and 156818 transitions.
[2021-11-20 06:55:05,227 INFO  L78                 Accepts]: Start accepts. Automaton has 134738 states and 156818 transitions. Word has length 2134
[2021-11-20 06:55:05,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:55:05,228 INFO  L470      AbstractCegarLoop]: Abstraction has 134738 states and 156818 transitions.
[2021-11-20 06:55:05,228 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 643.0) internal successors, (1929), 2 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:05,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 134738 states and 156818 transitions.
[2021-11-20 06:55:05,356 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2195
[2021-11-20 06:55:05,357 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:55:05,358 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-20 06:55:05,358 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-20 06:55:05,359 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:55:05,359 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:55:05,360 INFO  L85        PathProgramCache]: Analyzing trace with hash -542359059, now seen corresponding path program 1 times
[2021-11-20 06:55:05,360 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:55:05,360 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186186083]
[2021-11-20 06:55:05,360 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:55:05,360 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:55:05,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:55:06,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 950 backedges. 771 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-20 06:55:06,689 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:55:06,689 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186186083]
[2021-11-20 06:55:06,689 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186186083] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:55:06,689 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:55:06,690 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:55:06,690 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3039075]
[2021-11-20 06:55:06,690 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:55:06,693 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:55:06,694 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:55:06,694 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:55:06,694 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:55:06,695 INFO  L87              Difference]: Start difference. First operand 134738 states and 156818 transitions. Second operand  has 3 states, 3 states have (on average 684.0) internal successors, (2052), 3 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:12,975 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:55:12,976 INFO  L93              Difference]: Finished difference Result 323818 states and 375010 transitions.
[2021-11-20 06:55:12,976 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:55:12,976 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 684.0) internal successors, (2052), 3 states have internal predecessors, (2052), 0 states have call successors, (0), 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 2194
[2021-11-20 06:55:12,977 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:55:13,190 INFO  L225             Difference]: With dead ends: 323818
[2021-11-20 06:55:13,190 INFO  L226             Difference]: Without dead ends: 189082
[2021-11-20 06:55:13,236 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
[2021-11-20 06:55:13,237 INFO  L933         BasicCegarLoop]: 2057 mSDtfsCounter, 1732 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 6724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2021-11-20 06:55:13,237 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 2343 Invalid, 6724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2021-11-20 06:55:13,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189082 states.
[2021-11-20 06:55:15,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189082 to 180583.
[2021-11-20 06:55:15,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 180583 states, 180582 states have (on average 1.1398865889180538) internal successors, (205843), 180582 states have internal predecessors, (205843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:16,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 180583 states to 180583 states and 205843 transitions.
[2021-11-20 06:55:16,051 INFO  L78                 Accepts]: Start accepts. Automaton has 180583 states and 205843 transitions. Word has length 2194
[2021-11-20 06:55:16,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:55:16,052 INFO  L470      AbstractCegarLoop]: Abstraction has 180583 states and 205843 transitions.
[2021-11-20 06:55:16,052 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 684.0) internal successors, (2052), 3 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:16,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 180583 states and 205843 transitions.
[2021-11-20 06:55:16,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2226
[2021-11-20 06:55:16,213 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:55:16,214 INFO  L514         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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[2021-11-20 06:55:16,214 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-20 06:55:16,214 INFO  L402      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:55:16,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:55:16,215 INFO  L85        PathProgramCache]: Analyzing trace with hash 703659776, now seen corresponding path program 1 times
[2021-11-20 06:55:16,216 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:55:16,216 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019753335]
[2021-11-20 06:55:16,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:55:16,216 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:55:16,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:55:17,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 833 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked.
[2021-11-20 06:55:17,561 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:55:17,561 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019753335]
[2021-11-20 06:55:17,562 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019753335] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:55:17,562 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:55:17,562 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:55:17,562 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84897785]
[2021-11-20 06:55:17,562 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:55:17,564 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:55:17,565 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:55:17,565 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:55:17,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:55:17,566 INFO  L87              Difference]: Start difference. First operand 180583 states and 205843 transitions. Second operand  has 3 states, 3 states have (on average 694.3333333333334) internal successors, (2083), 3 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:24,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:55:24,233 INFO  L93              Difference]: Finished difference Result 427377 states and 487474 transitions.
[2021-11-20 06:55:24,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:55:24,234 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 694.3333333333334) internal successors, (2083), 3 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2225
[2021-11-20 06:55:24,234 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:55:24,536 INFO  L225             Difference]: With dead ends: 427377
[2021-11-20 06:55:24,536 INFO  L226             Difference]: Without dead ends: 246796
[2021-11-20 06:55:24,593 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
[2021-11-20 06:55:24,594 INFO  L933         BasicCegarLoop]: 3665 mSDtfsCounter, 1761 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 5292 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4031 SdHoareTripleChecker+Invalid, 6488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 5292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2021-11-20 06:55:24,594 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 4031 Invalid, 6488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 5292 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2021-11-20 06:55:24,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 246796 states.
[2021-11-20 06:55:27,053 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 246796 to 246795.
[2021-11-20 06:55:27,198 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 246795 states, 246794 states have (on average 1.1162953718485862) internal successors, (275495), 246794 states have internal predecessors, (275495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:28,245 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 246795 states to 246795 states and 275495 transitions.
[2021-11-20 06:55:28,246 INFO  L78                 Accepts]: Start accepts. Automaton has 246795 states and 275495 transitions. Word has length 2225
[2021-11-20 06:55:28,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-11-20 06:55:28,247 INFO  L470      AbstractCegarLoop]: Abstraction has 246795 states and 275495 transitions.
[2021-11-20 06:55:28,248 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 694.3333333333334) internal successors, (2083), 3 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:28,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 246795 states and 275495 transitions.
[2021-11-20 06:55:28,488 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2385
[2021-11-20 06:55:28,488 INFO  L506         BasicCegarLoop]: Found error trace
[2021-11-20 06:55:28,490 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2021-11-20 06:55:28,490 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-20 06:55:28,490 INFO  L402      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-20 06:55:28,491 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-11-20 06:55:28,491 INFO  L85        PathProgramCache]: Analyzing trace with hash -786405935, now seen corresponding path program 1 times
[2021-11-20 06:55:28,492 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-20 06:55:28,492 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189106816]
[2021-11-20 06:55:28,492 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-20 06:55:28,492 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-20 06:55:28,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-20 06:55:30,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 1125 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked.
[2021-11-20 06:55:30,236 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-20 06:55:30,237 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189106816]
[2021-11-20 06:55:30,237 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189106816] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-20 06:55:30,237 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-20 06:55:30,238 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-20 06:55:30,238 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889605966]
[2021-11-20 06:55:30,238 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-20 06:55:30,241 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-20 06:55:30,241 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-20 06:55:30,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-20 06:55:30,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-20 06:55:30,243 INFO  L87              Difference]: Start difference. First operand 246795 states and 275495 transitions. Second operand  has 3 states, 3 states have (on average 722.6666666666666) internal successors, (2168), 3 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-20 06:55:37,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-20 06:55:37,464 INFO  L93              Difference]: Finished difference Result 595487 states and 663515 transitions.
[2021-11-20 06:55:37,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-11-20 06:55:37,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 722.6666666666666) internal successors, (2168), 3 states have internal predecessors, (2168), 0 states have call successors, (0), 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 2384
[2021-11-20 06:55:37,466 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-20 06:55:37,901 INFO  L225             Difference]: With dead ends: 595487
[2021-11-20 06:55:37,901 INFO  L226             Difference]: Without dead ends: 348694
[2021-11-20 06:55:38,016 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
[2021-11-20 06:55:38,018 INFO  L933         BasicCegarLoop]: 3920 mSDtfsCounter, 1420 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 5781 mSolverCounterSat, 1238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 7019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1238 IncrementalHoareTripleChecker+Valid, 5781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2021-11-20 06:55:38,031 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 4173 Invalid, 7019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1238 Valid, 5781 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2021-11-20 06:55:38,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 348694 states.