./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label24.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d634fd23d01fe839a314506e249e9b7bf80b3248bfcf586822d8118f6d6301e2
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-13 21:37:58,015 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 21:37:58,016 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 21:37:58,035 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 21:37:58,035 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 21:37:58,036 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 21:37:58,037 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 21:37:58,039 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 21:37:58,040 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 21:37:58,041 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 21:37:58,042 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 21:37:58,043 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 21:37:58,043 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 21:37:58,044 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 21:37:58,045 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 21:37:58,046 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 21:37:58,047 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 21:37:58,048 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 21:37:58,049 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 21:37:58,051 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 21:37:58,052 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 21:37:58,053 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 21:37:58,054 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 21:37:58,055 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 21:37:58,058 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 21:37:58,059 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 21:37:58,059 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 21:37:58,060 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 21:37:58,060 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 21:37:58,061 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 21:37:58,061 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 21:37:58,062 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 21:37:58,063 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 21:37:58,063 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 21:37:58,064 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 21:37:58,065 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 21:37:58,065 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 21:37:58,065 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 21:37:58,066 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 21:37:58,066 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 21:37:58,067 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 21:37:58,068 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-12-13 21:37:58,089 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 21:37:58,089 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 21:37:58,089 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 21:37:58,089 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 21:37:58,090 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 21:37:58,090 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 21:37:58,091 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 21:37:58,108 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 21:37:58,108 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 21:37:58,109 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 21:37:58,109 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 21:37:58,109 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 21:37:58,109 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 21:37:58,109 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 21:37:58,109 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 21:37:58,110 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 21:37:58,110 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 21:37:58,110 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 21:37:58,110 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 21:37:58,110 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 21:37:58,111 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 21:37:58,111 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 21:37:58,111 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 21:37:58,111 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 21:37:58,111 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 21:37:58,112 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 21:37:58,112 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 21:37:58,112 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 21:37:58,112 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 21:37:58,113 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 21:37:58,113 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 21:37:58,113 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 21:37:58,113 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 21:37:58,113 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 21:37:58,113 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 21:37:58,114 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d634fd23d01fe839a314506e249e9b7bf80b3248bfcf586822d8118f6d6301e2
[2022-12-13 21:37:58,301 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 21:37:58,321 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 21:37:58,323 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 21:37:58,324 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 21:37:58,324 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 21:37:58,325 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem05_label24.c
[2022-12-13 21:38:00,960 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 21:38:01,349 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 21:38:01,350 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/sv-benchmarks/c/eca-rers2012/Problem05_label24.c
[2022-12-13 21:38:01,381 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/data/017765e0e/7cb995752acb415dbc8abdae50b99ce9/FLAG30765b4a8
[2022-12-13 21:38:01,393 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/data/017765e0e/7cb995752acb415dbc8abdae50b99ce9
[2022-12-13 21:38:01,396 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 21:38:01,397 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 21:38:01,398 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 21:38:01,398 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 21:38:01,402 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 21:38:01,402 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:38:01" (1/1) ...
[2022-12-13 21:38:01,403 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b5834d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:01, skipping insertion in model container
[2022-12-13 21:38:01,404 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:38:01" (1/1) ...
[2022-12-13 21:38:01,411 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 21:38:01,564 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 21:38:02,842 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/sv-benchmarks/c/eca-rers2012/Problem05_label24.c[377404,377417]
[2022-12-13 21:38:02,862 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 21:38:02,869 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 21:38:03,665 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/sv-benchmarks/c/eca-rers2012/Problem05_label24.c[377404,377417]
[2022-12-13 21:38:03,671 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 21:38:03,700 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 21:38:03,701 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03 WrapperNode
[2022-12-13 21:38:03,701 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 21:38:03,701 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 21:38:03,701 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 21:38:03,702 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 21:38:03,707 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:03,761 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:03,988 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-12-13 21:38:03,988 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 21:38:03,988 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 21:38:03,988 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 21:38:03,988 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 21:38:03,996 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:03,996 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,027 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,027 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,138 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,163 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,176 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,186 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,238 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 21:38:04,238 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 21:38:04,239 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 21:38:04,239 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 21:38:04,240 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (1/1) ...
[2022-12-13 21:38:04,246 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 21:38:04,256 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 21:38:04,267 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 21:38:04,269 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 21:38:04,301 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 21:38:04,301 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 21:38:04,302 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 21:38:04,302 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 21:38:04,389 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 21:38:04,392 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 21:38:09,909 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 21:38:09,926 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 21:38:09,926 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 21:38:09,929 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:38:09 BoogieIcfgContainer
[2022-12-13 21:38:09,930 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 21:38:09,932 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 21:38:09,932 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 21:38:09,934 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 21:38:09,934 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:38:01" (1/3) ...
[2022-12-13 21:38:09,935 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2049d8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:38:09, skipping insertion in model container
[2022-12-13 21:38:09,935 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:38:03" (2/3) ...
[2022-12-13 21:38:09,935 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2049d8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:38:09, skipping insertion in model container
[2022-12-13 21:38:09,935 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:38:09" (3/3) ...
[2022-12-13 21:38:09,936 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label24.c
[2022-12-13 21:38:09,951 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 21:38:09,951 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-13 21:38:10,024 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 21:38:10,029 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@476ddd06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 21:38:10,029 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-13 21:38:10,037 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:10,123 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1657
[2022-12-13 21:38:10,123 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:10,124 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:38:10,125 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:10,128 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:10,129 INFO  L85        PathProgramCache]: Analyzing trace with hash 711407970, now seen corresponding path program 1 times
[2022-12-13 21:38:10,136 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:10,137 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602355726]
[2022-12-13 21:38:10,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:10,137 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:10,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:12,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:38:12,876 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:12,876 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602355726]
[2022-12-13 21:38:12,877 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602355726] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:12,877 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:12,878 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:38:12,879 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261705406]
[2022-12-13 21:38:12,880 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:12,887 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:38:12,888 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:12,916 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:38:12,917 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:12,926 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:18,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:18,351 INFO  L93              Difference]: Finished difference Result 6156 states and 11651 transitions.
[2022-12-13 21:38:18,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:38:18,353 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 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 1656
[2022-12-13 21:38:18,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:38:18,377 INFO  L225             Difference]: With dead ends: 6156
[2022-12-13 21:38:18,377 INFO  L226             Difference]: Without dead ends: 3907
[2022-12-13 21:38:18,382 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:18,385 INFO  L413           NwaCegarLoop]: 1759 mSDtfsCounter, 320 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 1469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 7073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1469 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time
[2022-12-13 21:38:18,385 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 2072 Invalid, 7073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1469 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time]
[2022-12-13 21:38:18,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3907 states.
[2022-12-13 21:38:18,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3900.
[2022-12-13 21:38:18,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3900 states, 3899 states have (on average 1.6196460630931009) internal successors, (6315), 3899 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:18,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6315 transitions.
[2022-12-13 21:38:18,496 INFO  L78                 Accepts]: Start accepts. Automaton has 3900 states and 6315 transitions. Word has length 1656
[2022-12-13 21:38:18,498 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:38:18,498 INFO  L495      AbstractCegarLoop]: Abstraction has 3900 states and 6315 transitions.
[2022-12-13 21:38:18,499 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 552.0) internal successors, (1656), 2 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:18,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 3900 states and 6315 transitions.
[2022-12-13 21:38:18,539 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1662
[2022-12-13 21:38:18,539 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:18,540 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:38:18,540 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 21:38:18,541 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:18,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:18,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 1226131582, now seen corresponding path program 1 times
[2022-12-13 21:38:18,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:18,542 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155169952]
[2022-12-13 21:38:18,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:18,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:18,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:20,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:38:20,369 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:20,369 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155169952]
[2022-12-13 21:38:20,369 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155169952] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:20,369 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:20,370 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:38:20,370 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362402670]
[2022-12-13 21:38:20,370 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:20,372 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:38:20,372 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:20,373 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:38:20,373 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:20,374 INFO  L87              Difference]: Start difference. First operand 3900 states and 6315 transitions. Second operand  has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 2 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:26,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:26,238 INFO  L93              Difference]: Finished difference Result 11343 states and 18473 transitions.
[2022-12-13 21:38:26,238 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:38:26,239 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 2 states have internal predecessors, (1661), 0 states have call successors, (0), 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 1661
[2022-12-13 21:38:26,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:38:26,255 INFO  L225             Difference]: With dead ends: 11343
[2022-12-13 21:38:26,255 INFO  L226             Difference]: Without dead ends: 7445
[2022-12-13 21:38:26,258 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:26,260 INFO  L413           NwaCegarLoop]: 1348 mSDtfsCounter, 1996 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 5241 mSolverCounterSat, 2351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 7592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2351 IncrementalHoareTripleChecker+Valid, 5241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2022-12-13 21:38:26,260 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1996 Valid, 1568 Invalid, 7592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2351 Valid, 5241 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2022-12-13 21:38:26,268 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7445 states.
[2022-12-13 21:38:26,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 7361.
[2022-12-13 21:38:26,346 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7361 states, 7360 states have (on average 1.5040760869565217) internal successors, (11070), 7360 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:26,355 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 11070 transitions.
[2022-12-13 21:38:26,355 INFO  L78                 Accepts]: Start accepts. Automaton has 7361 states and 11070 transitions. Word has length 1661
[2022-12-13 21:38:26,355 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:38:26,355 INFO  L495      AbstractCegarLoop]: Abstraction has 7361 states and 11070 transitions.
[2022-12-13 21:38:26,356 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 2 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:26,356 INFO  L276                IsEmpty]: Start isEmpty. Operand 7361 states and 11070 transitions.
[2022-12-13 21:38:26,379 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1664
[2022-12-13 21:38:26,379 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:26,380 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:38:26,381 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 21:38:26,381 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:26,381 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:26,382 INFO  L85        PathProgramCache]: Analyzing trace with hash 1910548025, now seen corresponding path program 1 times
[2022-12-13 21:38:26,382 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:26,382 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165947773]
[2022-12-13 21:38:26,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:26,383 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:26,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:29,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:38:29,284 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:29,284 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165947773]
[2022-12-13 21:38:29,284 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165947773] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:29,285 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:29,285 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:38:29,285 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643776092]
[2022-12-13 21:38:29,285 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:29,287 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 21:38:29,287 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:29,289 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 21:38:29,289 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:38:29,290 INFO  L87              Difference]: Start difference. First operand 7361 states and 11070 transitions. Second operand  has 4 states, 4 states have (on average 415.75) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:37,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:37,770 INFO  L93              Difference]: Finished difference Result 23148 states and 35021 transitions.
[2022-12-13 21:38:37,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 21:38:37,771 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 415.75) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 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 1663
[2022-12-13 21:38:37,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:38:37,798 INFO  L225             Difference]: With dead ends: 23148
[2022-12-13 21:38:37,798 INFO  L226             Difference]: Without dead ends: 14137
[2022-12-13 21:38:37,804 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:38:37,805 INFO  L413           NwaCegarLoop]: 1032 mSDtfsCounter, 2408 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 9712 mSolverCounterSat, 3394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 13106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3394 IncrementalHoareTripleChecker+Valid, 9712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-12-13 21:38:37,805 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 1446 Invalid, 13106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3394 Valid, 9712 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-12-13 21:38:37,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14137 states.
[2022-12-13 21:38:37,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14137 to 14137.
[2022-12-13 21:38:37,950 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14137 states, 14136 states have (on average 1.2422184493491795) internal successors, (17560), 14136 states have internal predecessors, (17560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:37,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14137 states to 14137 states and 17560 transitions.
[2022-12-13 21:38:37,966 INFO  L78                 Accepts]: Start accepts. Automaton has 14137 states and 17560 transitions. Word has length 1663
[2022-12-13 21:38:37,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:38:37,966 INFO  L495      AbstractCegarLoop]: Abstraction has 14137 states and 17560 transitions.
[2022-12-13 21:38:37,967 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 415.75) internal successors, (1663), 3 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:37,967 INFO  L276                IsEmpty]: Start isEmpty. Operand 14137 states and 17560 transitions.
[2022-12-13 21:38:37,997 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1675
[2022-12-13 21:38:37,998 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:37,998 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:38:37,998 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 21:38:37,999 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:37,999 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:37,999 INFO  L85        PathProgramCache]: Analyzing trace with hash 640392116, now seen corresponding path program 1 times
[2022-12-13 21:38:37,999 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:38,000 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130846127]
[2022-12-13 21:38:38,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:38,000 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:38,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:39,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:38:39,280 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:39,280 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130846127]
[2022-12-13 21:38:39,280 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130846127] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:39,280 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:39,281 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:38:39,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477246842]
[2022-12-13 21:38:39,281 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:39,282 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:38:39,282 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:39,283 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:38:39,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:39,284 INFO  L87              Difference]: Start difference. First operand 14137 states and 17560 transitions. Second operand  has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:43,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:43,278 INFO  L93              Difference]: Finished difference Result 35095 states and 44334 transitions.
[2022-12-13 21:38:43,278 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:38:43,279 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 0 states have call successors, (0), 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 1674
[2022-12-13 21:38:43,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:38:43,304 INFO  L225             Difference]: With dead ends: 35095
[2022-12-13 21:38:43,304 INFO  L226             Difference]: Without dead ends: 20960
[2022-12-13 21:38:43,311 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:43,311 INFO  L413           NwaCegarLoop]: 2993 mSDtfsCounter, 380 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 1132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 5617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1132 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2022-12-13 21:38:43,312 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 3232 Invalid, 5617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1132 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2022-12-13 21:38:43,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20960 states.
[2022-12-13 21:38:43,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20960 to 20953.
[2022-12-13 21:38:43,489 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20953 states, 20952 states have (on average 1.1994558991981672) internal successors, (25131), 20952 states have internal predecessors, (25131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:43,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20953 states to 20953 states and 25131 transitions.
[2022-12-13 21:38:43,508 INFO  L78                 Accepts]: Start accepts. Automaton has 20953 states and 25131 transitions. Word has length 1674
[2022-12-13 21:38:43,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:38:43,509 INFO  L495      AbstractCegarLoop]: Abstraction has 20953 states and 25131 transitions.
[2022-12-13 21:38:43,509 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:43,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 20953 states and 25131 transitions.
[2022-12-13 21:38:43,540 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2022-12-13 21:38:43,540 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:43,541 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 21:38:43,541 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-13 21:38:43,541 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:43,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:43,542 INFO  L85        PathProgramCache]: Analyzing trace with hash 2074010777, now seen corresponding path program 1 times
[2022-12-13 21:38:43,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:43,542 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089760769]
[2022-12-13 21:38:43,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:43,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:43,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:44,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:38:44,508 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:44,508 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089760769]
[2022-12-13 21:38:44,508 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089760769] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:44,508 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:44,509 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:38:44,509 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151670118]
[2022-12-13 21:38:44,509 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:44,510 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:38:44,510 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:44,511 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:38:44,511 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:44,511 INFO  L87              Difference]: Start difference. First operand 20953 states and 25131 transitions. Second operand  has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:48,535 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:48,535 INFO  L93              Difference]: Finished difference Result 62306 states and 74690 transitions.
[2022-12-13 21:38:48,535 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:38:48,535 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 0 states have call successors, (0), 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 1692
[2022-12-13 21:38:48,536 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:38:48,570 INFO  L225             Difference]: With dead ends: 62306
[2022-12-13 21:38:48,570 INFO  L226             Difference]: Without dead ends: 41355
[2022-12-13 21:38:48,581 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:48,582 INFO  L413           NwaCegarLoop]: 982 mSDtfsCounter, 2102 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4512 mSolverCounterSat, 1383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 5895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 4512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2022-12-13 21:38:48,582 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 1115 Invalid, 5895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1383 Valid, 4512 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2022-12-13 21:38:48,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41355 states.
[2022-12-13 21:38:48,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41355 to 41337.
[2022-12-13 21:38:48,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41337 states, 41336 states have (on average 1.163924908070447) internal successors, (48112), 41336 states have internal predecessors, (48112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:48,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41337 states to 41337 states and 48112 transitions.
[2022-12-13 21:38:48,935 INFO  L78                 Accepts]: Start accepts. Automaton has 41337 states and 48112 transitions. Word has length 1692
[2022-12-13 21:38:48,935 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:38:48,936 INFO  L495      AbstractCegarLoop]: Abstraction has 41337 states and 48112 transitions.
[2022-12-13 21:38:48,936 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 564.0) internal successors, (1692), 2 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:48,936 INFO  L276                IsEmpty]: Start isEmpty. Operand 41337 states and 48112 transitions.
[2022-12-13 21:38:48,979 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1702
[2022-12-13 21:38:48,979 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:48,980 INFO  L195           NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:38:48,980 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 21:38:48,980 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:48,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:48,981 INFO  L85        PathProgramCache]: Analyzing trace with hash -276936510, now seen corresponding path program 1 times
[2022-12-13 21:38:48,981 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:48,981 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700636046]
[2022-12-13 21:38:48,981 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:48,982 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:49,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:50,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-12-13 21:38:50,071 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:50,071 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700636046]
[2022-12-13 21:38:50,072 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700636046] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:50,072 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:50,072 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:38:50,073 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323342519]
[2022-12-13 21:38:50,073 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:50,075 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:38:50,076 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:50,078 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:38:50,078 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:50,079 INFO  L87              Difference]: Start difference. First operand 41337 states and 48112 transitions. Second operand  has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:54,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:54,206 INFO  L93              Difference]: Finished difference Result 103073 states and 119240 transitions.
[2022-12-13 21:38:54,206 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:38:54,206 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 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 1701
[2022-12-13 21:38:54,207 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:38:54,259 INFO  L225             Difference]: With dead ends: 103073
[2022-12-13 21:38:54,260 INFO  L226             Difference]: Without dead ends: 61738
[2022-12-13 21:38:54,280 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:54,281 INFO  L413           NwaCegarLoop]: 1110 mSDtfsCounter, 2032 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4601 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 5643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 4601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time
[2022-12-13 21:38:54,281 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 1274 Invalid, 5643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 4601 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time]
[2022-12-13 21:38:54,320 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61738 states.
[2022-12-13 21:38:54,720 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61738 to 61715.
[2022-12-13 21:38:54,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61715 states, 61714 states have (on average 1.1114009787082348) internal successors, (68589), 61714 states have internal predecessors, (68589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:54,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61715 states to 61715 states and 68589 transitions.
[2022-12-13 21:38:54,811 INFO  L78                 Accepts]: Start accepts. Automaton has 61715 states and 68589 transitions. Word has length 1701
[2022-12-13 21:38:54,811 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:38:54,811 INFO  L495      AbstractCegarLoop]: Abstraction has 61715 states and 68589 transitions.
[2022-12-13 21:38:54,812 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 563.6666666666666) internal successors, (1691), 2 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:54,812 INFO  L276                IsEmpty]: Start isEmpty. Operand 61715 states and 68589 transitions.
[2022-12-13 21:38:54,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1725
[2022-12-13 21:38:54,869 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:38:54,870 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:38:54,870 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 21:38:54,870 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:38:54,870 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:38:54,871 INFO  L85        PathProgramCache]: Analyzing trace with hash 638301146, now seen corresponding path program 1 times
[2022-12-13 21:38:54,871 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:38:54,871 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349364254]
[2022-12-13 21:38:54,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:38:54,871 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:38:55,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:38:55,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 108 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked.
[2022-12-13 21:38:55,900 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:38:55,900 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349364254]
[2022-12-13 21:38:55,900 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349364254] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:38:55,900 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:38:55,901 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:38:55,901 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008645946]
[2022-12-13 21:38:55,901 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:38:55,903 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:38:55,903 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:38:55,904 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:38:55,904 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:38:55,904 INFO  L87              Difference]: Start difference. First operand 61715 states and 68589 transitions. Second operand  has 3 states, 3 states have (on average 561.0) internal successors, (1683), 2 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:38:59,914 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:38:59,914 INFO  L93              Difference]: Finished difference Result 182852 states and 203099 transitions.
[2022-12-13 21:38:59,915 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:38:59,915 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 561.0) internal successors, (1683), 2 states have internal predecessors, (1683), 0 states have call successors, (0), 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 1724
[2022-12-13 21:38:59,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:39:00,022 INFO  L225             Difference]: With dead ends: 182852
[2022-12-13 21:39:00,022 INFO  L226             Difference]: Without dead ends: 121139
[2022-12-13 21:39:00,052 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:00,053 INFO  L413           NwaCegarLoop]: 1272 mSDtfsCounter, 2204 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4692 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 5602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 4692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 21:39:00,053 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 1442 Invalid, 5602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 4692 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 21:39:00,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121139 states.
[2022-12-13 21:39:00,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121139 to 121137.
[2022-12-13 21:39:01,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 121137 states, 121136 states have (on average 1.0807274468366135) internal successors, (130915), 121136 states have internal predecessors, (130915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:01,112 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121137 states to 121137 states and 130915 transitions.
[2022-12-13 21:39:01,112 INFO  L78                 Accepts]: Start accepts. Automaton has 121137 states and 130915 transitions. Word has length 1724
[2022-12-13 21:39:01,113 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:39:01,113 INFO  L495      AbstractCegarLoop]: Abstraction has 121137 states and 130915 transitions.
[2022-12-13 21:39:01,113 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 561.0) internal successors, (1683), 2 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:01,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 121137 states and 130915 transitions.
[2022-12-13 21:39:01,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1763
[2022-12-13 21:39:01,185 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:39:01,186 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 21:39:01,186 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-13 21:39:01,186 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:39:01,187 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:39:01,187 INFO  L85        PathProgramCache]: Analyzing trace with hash 1142573148, now seen corresponding path program 1 times
[2022-12-13 21:39:01,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:39:01,187 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598954564]
[2022-12-13 21:39:01,187 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:39:01,187 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:39:01,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:39:02,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:39:02,204 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:39:02,204 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598954564]
[2022-12-13 21:39:02,204 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598954564] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:39:02,205 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:39:02,205 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:39:02,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623618058]
[2022-12-13 21:39:02,205 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:39:02,206 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:39:02,206 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:39:02,207 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:39:02,207 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:02,207 INFO  L87              Difference]: Start difference. First operand 121137 states and 130915 transitions. Second operand  has 3 states, 3 states have (on average 587.3333333333334) internal successors, (1762), 2 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:07,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:39:07,066 INFO  L93              Difference]: Finished difference Result 352641 states and 380707 transitions.
[2022-12-13 21:39:07,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:39:07,067 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 587.3333333333334) internal successors, (1762), 2 states have internal predecessors, (1762), 0 states have call successors, (0), 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 1762
[2022-12-13 21:39:07,068 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:39:07,342 INFO  L225             Difference]: With dead ends: 352641
[2022-12-13 21:39:07,342 INFO  L226             Difference]: Without dead ends: 231506
[2022-12-13 21:39:07,369 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:07,370 INFO  L413           NwaCegarLoop]: 1324 mSDtfsCounter, 2115 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:39:07,370 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 1456 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 21:39:07,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 231506 states.
[2022-12-13 21:39:09,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 231506 to 206032.
[2022-12-13 21:39:09,094 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 206032 states, 206031 states have (on average 1.066019191286748) internal successors, (219633), 206031 states have internal predecessors, (219633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:09,445 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 206032 states to 206032 states and 219633 transitions.
[2022-12-13 21:39:09,445 INFO  L78                 Accepts]: Start accepts. Automaton has 206032 states and 219633 transitions. Word has length 1762
[2022-12-13 21:39:09,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:39:09,445 INFO  L495      AbstractCegarLoop]: Abstraction has 206032 states and 219633 transitions.
[2022-12-13 21:39:09,446 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 587.3333333333334) internal successors, (1762), 2 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:09,446 INFO  L276                IsEmpty]: Start isEmpty. Operand 206032 states and 219633 transitions.
[2022-12-13 21:39:09,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1908
[2022-12-13 21:39:09,552 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:39:09,553 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2022-12-13 21:39:09,553 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-13 21:39:09,553 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:39:09,554 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:39:09,554 INFO  L85        PathProgramCache]: Analyzing trace with hash -817373563, now seen corresponding path program 1 times
[2022-12-13 21:39:09,554 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:39:09,554 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726770336]
[2022-12-13 21:39:09,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:39:09,554 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:39:09,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:39:11,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 426 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-12-13 21:39:11,504 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:39:11,504 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726770336]
[2022-12-13 21:39:11,505 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726770336] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:39:11,505 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:39:11,505 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:39:11,505 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370406574]
[2022-12-13 21:39:11,505 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:39:11,506 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:39:11,506 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:39:11,507 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:39:11,507 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:11,507 INFO  L87              Difference]: Start difference. First operand 206032 states and 219633 transitions. Second operand  has 3 states, 3 states have (on average 624.3333333333334) internal successors, (1873), 3 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:17,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:39:17,151 INFO  L93              Difference]: Finished difference Result 488548 states and 521675 transitions.
[2022-12-13 21:39:17,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:39:17,152 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 624.3333333333334) internal successors, (1873), 3 states have internal predecessors, (1873), 0 states have call successors, (0), 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 1907
[2022-12-13 21:39:17,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:39:17,506 INFO  L225             Difference]: With dead ends: 488548
[2022-12-13 21:39:17,506 INFO  L226             Difference]: Without dead ends: 280820
[2022-12-13 21:39:17,568 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:17,568 INFO  L413           NwaCegarLoop]: 3198 mSDtfsCounter, 1762 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 5072 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 3412 SdHoareTripleChecker+Invalid, 5914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-12-13 21:39:17,569 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 3412 Invalid, 5914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 5072 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time]
[2022-12-13 21:39:17,707 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 280820 states.
[2022-12-13 21:39:19,603 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 280820 to 279052.
[2022-12-13 21:39:19,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 279052 states, 279051 states have (on average 1.0552300475540313) internal successors, (294463), 279051 states have internal predecessors, (294463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:20,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 279052 states to 279052 states and 294463 transitions.
[2022-12-13 21:39:20,048 INFO  L78                 Accepts]: Start accepts. Automaton has 279052 states and 294463 transitions. Word has length 1907
[2022-12-13 21:39:20,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:39:20,048 INFO  L495      AbstractCegarLoop]: Abstraction has 279052 states and 294463 transitions.
[2022-12-13 21:39:20,049 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 624.3333333333334) internal successors, (1873), 3 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:20,049 INFO  L276                IsEmpty]: Start isEmpty. Operand 279052 states and 294463 transitions.
[2022-12-13 21:39:20,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2078
[2022-12-13 21:39:20,460 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:39:20,461 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2022-12-13 21:39:20,461 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-12-13 21:39:20,462 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:39:20,462 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:39:20,462 INFO  L85        PathProgramCache]: Analyzing trace with hash 978105223, now seen corresponding path program 1 times
[2022-12-13 21:39:20,462 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:39:20,463 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953614353]
[2022-12-13 21:39:20,463 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:39:20,463 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:39:20,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:39:22,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 658 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked.
[2022-12-13 21:39:22,140 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:39:22,140 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953614353]
[2022-12-13 21:39:22,140 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953614353] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:39:22,140 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:39:22,140 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:39:22,141 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582449286]
[2022-12-13 21:39:22,141 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:39:22,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:39:22,142 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:39:22,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:39:22,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:22,143 INFO  L87              Difference]: Start difference. First operand 279052 states and 294463 transitions. Second operand  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:27,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:39:27,354 INFO  L93              Difference]: Finished difference Result 622697 states and 656226 transitions.
[2022-12-13 21:39:27,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:39:27,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 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 2077
[2022-12-13 21:39:27,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:39:27,778 INFO  L225             Difference]: With dead ends: 622697
[2022-12-13 21:39:27,779 INFO  L226             Difference]: Without dead ends: 343647
[2022-12-13 21:39:27,854 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:27,854 INFO  L413           NwaCegarLoop]: 3115 mSDtfsCounter, 1577 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:39:27,855 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3346 Invalid, 5422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 21:39:28,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 343647 states.
[2022-12-13 21:39:30,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 343647 to 341878.
[2022-12-13 21:39:30,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 341878 states, 341877 states have (on average 1.049740111209587) internal successors, (358882), 341877 states have internal predecessors, (358882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:31,264 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 341878 states to 341878 states and 358882 transitions.
[2022-12-13 21:39:31,264 INFO  L78                 Accepts]: Start accepts. Automaton has 341878 states and 358882 transitions. Word has length 2077
[2022-12-13 21:39:31,265 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:39:31,265 INFO  L495      AbstractCegarLoop]: Abstraction has 341878 states and 358882 transitions.
[2022-12-13 21:39:31,265 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:31,265 INFO  L276                IsEmpty]: Start isEmpty. Operand 341878 states and 358882 transitions.
[2022-12-13 21:39:31,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2172
[2022-12-13 21:39:31,630 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:39:31,631 INFO  L195           NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 21:39:31,631 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-12-13 21:39:31,631 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:39:31,632 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:39:31,632 INFO  L85        PathProgramCache]: Analyzing trace with hash -1238632381, now seen corresponding path program 1 times
[2022-12-13 21:39:31,632 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:39:31,632 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780319033]
[2022-12-13 21:39:31,633 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:39:31,633 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:39:31,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:39:33,559 INFO  L134       CoverageAnalysis]: Checked inductivity of 562 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-12-13 21:39:33,559 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:39:33,559 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780319033]
[2022-12-13 21:39:33,560 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780319033] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:39:33,560 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:39:33,560 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:39:33,560 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429184207]
[2022-12-13 21:39:33,560 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:39:33,561 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:39:33,561 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:39:33,562 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:39:33,562 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:33,562 INFO  L87              Difference]: Start difference. First operand 341878 states and 358882 transitions. Second operand  has 3 states, 3 states have (on average 720.3333333333334) internal successors, (2161), 3 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:38,753 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:39:38,754 INFO  L93              Difference]: Finished difference Result 772070 states and 810686 transitions.
[2022-12-13 21:39:38,754 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:39:38,754 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 720.3333333333334) internal successors, (2161), 3 states have internal predecessors, (2161), 0 states have call successors, (0), 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 2171
[2022-12-13 21:39:38,755 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:39:39,324 INFO  L225             Difference]: With dead ends: 772070
[2022-12-13 21:39:39,325 INFO  L226             Difference]: Without dead ends: 428496
[2022-12-13 21:39:39,419 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:39,420 INFO  L413           NwaCegarLoop]: 3087 mSDtfsCounter, 1816 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 4709 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 4709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 21:39:39,420 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 3322 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 4709 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 21:39:39,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 428496 states.
[2022-12-13 21:39:43,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 428496 to 418287.
[2022-12-13 21:39:43,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 418287 states, 418286 states have (on average 1.0433865823862143) internal successors, (436434), 418286 states have internal predecessors, (436434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:44,219 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 418287 states to 418287 states and 436434 transitions.
[2022-12-13 21:39:44,219 INFO  L78                 Accepts]: Start accepts. Automaton has 418287 states and 436434 transitions. Word has length 2171
[2022-12-13 21:39:44,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:39:44,219 INFO  L495      AbstractCegarLoop]: Abstraction has 418287 states and 436434 transitions.
[2022-12-13 21:39:44,220 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 720.3333333333334) internal successors, (2161), 3 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:44,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 418287 states and 436434 transitions.
[2022-12-13 21:39:44,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2185
[2022-12-13 21:39:44,450 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:39:44,450 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-12-13 21:39:44,451 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-12-13 21:39:44,451 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:39:44,451 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:39:44,451 INFO  L85        PathProgramCache]: Analyzing trace with hash -1909009560, now seen corresponding path program 1 times
[2022-12-13 21:39:44,451 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:39:44,451 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115821700]
[2022-12-13 21:39:44,452 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:39:44,452 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:39:44,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:39:46,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 1138 backedges. 896 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2022-12-13 21:39:46,331 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:39:46,331 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115821700]
[2022-12-13 21:39:46,331 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115821700] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:39:46,332 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:39:46,332 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:39:46,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978885812]
[2022-12-13 21:39:46,332 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:39:46,335 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:39:46,335 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:39:46,337 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:39:46,337 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:46,337 INFO  L87              Difference]: Start difference. First operand 418287 states and 436434 transitions. Second operand  has 3 states, 3 states have (on average 666.6666666666666) internal successors, (2000), 3 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:52,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:39:52,377 INFO  L93              Difference]: Finished difference Result 848464 states and 884643 transitions.
[2022-12-13 21:39:52,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:39:52,378 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 666.6666666666666) internal successors, (2000), 3 states have internal predecessors, (2000), 0 states have call successors, (0), 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 2184
[2022-12-13 21:39:52,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:39:52,887 INFO  L225             Difference]: With dead ends: 848464
[2022-12-13 21:39:52,887 INFO  L226             Difference]: Without dead ends: 426783
[2022-12-13 21:39:53,005 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:53,006 INFO  L413           NwaCegarLoop]: 2613 mSDtfsCounter, 2054 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4394 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 5264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 4394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:39:53,006 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 2715 Invalid, 5264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 4394 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 21:39:53,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 426783 states.
[2022-12-13 21:39:56,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 426783 to 413192.
[2022-12-13 21:39:56,728 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 413192 states, 413191 states have (on average 1.0340762504507601) internal successors, (427271), 413191 states have internal predecessors, (427271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:57,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 413192 states to 413192 states and 427271 transitions.
[2022-12-13 21:39:57,111 INFO  L78                 Accepts]: Start accepts. Automaton has 413192 states and 427271 transitions. Word has length 2184
[2022-12-13 21:39:57,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:39:57,111 INFO  L495      AbstractCegarLoop]: Abstraction has 413192 states and 427271 transitions.
[2022-12-13 21:39:57,112 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 666.6666666666666) internal successors, (2000), 3 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:39:57,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 413192 states and 427271 transitions.
[2022-12-13 21:39:57,534 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2301
[2022-12-13 21:39:57,534 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:39:57,535 INFO  L195           NwaCegarLoop]: 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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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]
[2022-12-13 21:39:57,535 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-12-13 21:39:57,535 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:39:57,536 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:39:57,536 INFO  L85        PathProgramCache]: Analyzing trace with hash 739661531, now seen corresponding path program 1 times
[2022-12-13 21:39:57,536 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:39:57,536 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534440621]
[2022-12-13 21:39:57,536 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:39:57,536 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:39:57,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:39:59,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 854 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked.
[2022-12-13 21:39:59,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:39:59,719 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534440621]
[2022-12-13 21:39:59,719 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534440621] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:39:59,719 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:39:59,719 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 21:39:59,719 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135454691]
[2022-12-13 21:39:59,719 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:39:59,720 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:39:59,721 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:39:59,722 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:39:59,722 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:39:59,722 INFO  L87              Difference]: Start difference. First operand 413192 states and 427271 transitions. Second operand  has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 2 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:05,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:40:05,842 INFO  L93              Difference]: Finished difference Result 901098 states and 931348 transitions.
[2022-12-13 21:40:05,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:40:05,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 2 states have internal predecessors, (2099), 0 states have call successors, (0), 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 2300
[2022-12-13 21:40:05,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:40:06,398 INFO  L225             Difference]: With dead ends: 901098
[2022-12-13 21:40:06,398 INFO  L226             Difference]: Without dead ends: 443693
[2022-12-13 21:40:06,570 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:40:06,570 INFO  L413           NwaCegarLoop]: 1325 mSDtfsCounter, 1568 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4248 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 4248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:40:06,570 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 1501 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 4248 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 21:40:06,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 443693 states.
[2022-12-13 21:40:10,047 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 443693 to 397845.
[2022-12-13 21:40:10,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 397845 states, 397844 states have (on average 1.0306451775067615) internal successors, (410036), 397844 states have internal predecessors, (410036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:10,716 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 397845 states to 397845 states and 410036 transitions.
[2022-12-13 21:40:10,717 INFO  L78                 Accepts]: Start accepts. Automaton has 397845 states and 410036 transitions. Word has length 2300
[2022-12-13 21:40:10,717 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:40:10,717 INFO  L495      AbstractCegarLoop]: Abstraction has 397845 states and 410036 transitions.
[2022-12-13 21:40:10,718 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 2 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:10,718 INFO  L276                IsEmpty]: Start isEmpty. Operand 397845 states and 410036 transitions.
[2022-12-13 21:40:11,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2304
[2022-12-13 21:40:11,147 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:40:11,148 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 21:40:11,148 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-12-13 21:40:11,148 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:40:11,148 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:40:11,149 INFO  L85        PathProgramCache]: Analyzing trace with hash 855513002, now seen corresponding path program 1 times
[2022-12-13 21:40:11,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:40:11,149 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534257393]
[2022-12-13 21:40:11,149 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:40:11,149 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:40:11,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:40:13,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 1500 backedges. 1012 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked.
[2022-12-13 21:40:13,332 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:40:13,332 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534257393]
[2022-12-13 21:40:13,332 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534257393] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:40:13,332 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:40:13,332 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:40:13,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196545540]
[2022-12-13 21:40:13,332 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:40:13,333 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:40:13,333 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:40:13,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:40:13,334 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:40:13,335 INFO  L87              Difference]: Start difference. First operand 397845 states and 410036 transitions. Second operand  has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:18,935 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:40:18,935 INFO  L93              Difference]: Finished difference Result 894166 states and 921938 transitions.
[2022-12-13 21:40:18,936 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:40:18,936 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 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 2303
[2022-12-13 21:40:18,937 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:40:19,575 INFO  L225             Difference]: With dead ends: 894166
[2022-12-13 21:40:19,576 INFO  L226             Difference]: Without dead ends: 496323
[2022-12-13 21:40:19,653 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:40:19,653 INFO  L413           NwaCegarLoop]: 2885 mSDtfsCounter, 1867 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4128 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 5151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 4128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2022-12-13 21:40:19,653 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 3191 Invalid, 5151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 4128 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2022-12-13 21:40:19,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 496323 states.
[2022-12-13 21:40:23,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 496323 to 453866.
[2022-12-13 21:40:23,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 453866 states, 453865 states have (on average 1.0247760898064402) internal successors, (465110), 453865 states have internal predecessors, (465110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:24,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 453866 states to 453866 states and 465110 transitions.
[2022-12-13 21:40:24,316 INFO  L78                 Accepts]: Start accepts. Automaton has 453866 states and 465110 transitions. Word has length 2303
[2022-12-13 21:40:24,316 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:40:24,316 INFO  L495      AbstractCegarLoop]: Abstraction has 453866 states and 465110 transitions.
[2022-12-13 21:40:24,317 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:24,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 453866 states and 465110 transitions.
[2022-12-13 21:40:24,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2530
[2022-12-13 21:40:24,784 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:40:24,784 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:40:24,785 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-12-13 21:40:24,785 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:40:24,785 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:40:24,785 INFO  L85        PathProgramCache]: Analyzing trace with hash 1531518458, now seen corresponding path program 1 times
[2022-12-13 21:40:24,785 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:40:24,785 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784825153]
[2022-12-13 21:40:24,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:40:24,786 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:40:25,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:40:26,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 1535 backedges. 1158 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked.
[2022-12-13 21:40:26,700 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:40:26,700 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784825153]
[2022-12-13 21:40:26,700 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784825153] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:40:26,700 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:40:26,700 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:40:26,701 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919193983]
[2022-12-13 21:40:26,701 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:40:26,702 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:40:26,702 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:40:26,703 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:40:26,703 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:40:26,703 INFO  L87              Difference]: Start difference. First operand 453866 states and 465110 transitions. Second operand  has 3 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:32,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:40:32,087 INFO  L93              Difference]: Finished difference Result 906035 states and 928436 transitions.
[2022-12-13 21:40:32,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:40:32,088 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 0 states have call successors, (0), 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 2529
[2022-12-13 21:40:32,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:40:32,702 INFO  L225             Difference]: With dead ends: 906035
[2022-12-13 21:40:32,702 INFO  L226             Difference]: Without dead ends: 452171
[2022-12-13 21:40:32,861 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:40:32,861 INFO  L413           NwaCegarLoop]: 750 mSDtfsCounter, 1780 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4360 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 4985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 4360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2022-12-13 21:40:32,861 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 897 Invalid, 4985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 4360 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2022-12-13 21:40:33,182 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 452171 states.
[2022-12-13 21:40:36,673 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 452171 to 447071.
[2022-12-13 21:40:36,845 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 447071 states, 447070 states have (on average 1.0196456930681996) internal successors, (455853), 447070 states have internal predecessors, (455853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:37,465 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 447071 states to 447071 states and 455853 transitions.
[2022-12-13 21:40:37,465 INFO  L78                 Accepts]: Start accepts. Automaton has 447071 states and 455853 transitions. Word has length 2529
[2022-12-13 21:40:37,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:40:37,466 INFO  L495      AbstractCegarLoop]: Abstraction has 447071 states and 455853 transitions.
[2022-12-13 21:40:37,466 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 718.0) internal successors, (2154), 3 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:37,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 447071 states and 455853 transitions.
[2022-12-13 21:40:37,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2542
[2022-12-13 21:40:37,726 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:40:37,726 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:40:37,726 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-12-13 21:40:37,727 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:40:37,727 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:40:37,728 INFO  L85        PathProgramCache]: Analyzing trace with hash -1341628062, now seen corresponding path program 1 times
[2022-12-13 21:40:37,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:40:37,728 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844922559]
[2022-12-13 21:40:37,728 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:40:37,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:40:38,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:40:40,924 INFO  L134       CoverageAnalysis]: Checked inductivity of 1229 backedges. 913 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2022-12-13 21:40:40,925 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:40:40,925 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844922559]
[2022-12-13 21:40:40,925 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844922559] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:40:40,925 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:40:40,925 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:40:40,925 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295445828]
[2022-12-13 21:40:40,925 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:40:40,926 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 21:40:40,926 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:40:40,927 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 21:40:40,928 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:40:40,928 INFO  L87              Difference]: Start difference. First operand 447071 states and 455853 transitions. Second operand  has 4 states, 4 states have (on average 556.5) internal successors, (2226), 3 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:48,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:40:48,694 INFO  L93              Difference]: Finished difference Result 945075 states and 963621 transitions.
[2022-12-13 21:40:48,694 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 21:40:48,695 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 556.5) internal successors, (2226), 3 states have internal predecessors, (2226), 0 states have call successors, (0), 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 2541
[2022-12-13 21:40:48,695 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:40:49,237 INFO  L225             Difference]: With dead ends: 945075
[2022-12-13 21:40:49,237 INFO  L226             Difference]: Without dead ends: 470785
[2022-12-13 21:40:49,386 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:40:49,387 INFO  L413           NwaCegarLoop]: 806 mSDtfsCounter, 3533 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 8229 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 9179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 8229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2022-12-13 21:40:49,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 1067 Invalid, 9179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [950 Valid, 8229 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2022-12-13 21:40:49,756 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 470785 states.
[2022-12-13 21:40:52,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 470785 to 411352.
[2022-12-13 21:40:53,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411352 states, 411351 states have (on average 1.0169976492095558) internal successors, (418343), 411351 states have internal predecessors, (418343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:53,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411352 states to 411352 states and 418343 transitions.
[2022-12-13 21:40:53,703 INFO  L78                 Accepts]: Start accepts. Automaton has 411352 states and 418343 transitions. Word has length 2541
[2022-12-13 21:40:53,704 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:40:53,704 INFO  L495      AbstractCegarLoop]: Abstraction has 411352 states and 418343 transitions.
[2022-12-13 21:40:53,704 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 556.5) internal successors, (2226), 3 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:40:53,704 INFO  L276                IsEmpty]: Start isEmpty. Operand 411352 states and 418343 transitions.
[2022-12-13 21:40:53,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2558
[2022-12-13 21:40:53,934 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:40:53,935 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:40:53,935 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-12-13 21:40:53,935 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:40:53,935 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:40:53,936 INFO  L85        PathProgramCache]: Analyzing trace with hash 518900480, now seen corresponding path program 1 times
[2022-12-13 21:40:53,936 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:40:53,936 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277997712]
[2022-12-13 21:40:53,936 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:40:53,936 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:40:54,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:40:56,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 1415 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked.
[2022-12-13 21:40:56,010 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:40:56,010 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277997712]
[2022-12-13 21:40:56,010 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277997712] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:40:56,010 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:40:56,010 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:40:56,010 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708902960]
[2022-12-13 21:40:56,010 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:40:56,012 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:40:56,012 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:40:56,014 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:40:56,014 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:40:56,014 INFO  L87              Difference]: Start difference. First operand 411352 states and 418343 transitions. Second operand  has 3 states, 3 states have (on average 739.0) internal successors, (2217), 3 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:01,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:41:01,008 INFO  L93              Difference]: Finished difference Result 822704 states and 836687 transitions.
[2022-12-13 21:41:01,008 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:41:01,009 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 739.0) internal successors, (2217), 3 states have internal predecessors, (2217), 0 states have call successors, (0), 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 2557
[2022-12-13 21:41:01,009 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:41:01,478 INFO  L225             Difference]: With dead ends: 822704
[2022-12-13 21:41:01,478 INFO  L226             Difference]: Without dead ends: 411354
[2022-12-13 21:41:01,623 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:41:01,623 INFO  L413           NwaCegarLoop]: 2758 mSDtfsCounter, 1756 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 4333 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 4333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-12-13 21:41:01,624 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 2986 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 4333 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-12-13 21:41:01,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 411354 states.
[2022-12-13 21:41:04,977 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 411354 to 411351.
[2022-12-13 21:41:05,149 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 411351 states, 411350 states have (on average 1.012855232770147) internal successors, (416638), 411350 states have internal predecessors, (416638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:05,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 411351 states to 411351 states and 416638 transitions.
[2022-12-13 21:41:05,715 INFO  L78                 Accepts]: Start accepts. Automaton has 411351 states and 416638 transitions. Word has length 2557
[2022-12-13 21:41:05,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:41:05,715 INFO  L495      AbstractCegarLoop]: Abstraction has 411351 states and 416638 transitions.
[2022-12-13 21:41:05,716 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 739.0) internal successors, (2217), 3 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:05,716 INFO  L276                IsEmpty]: Start isEmpty. Operand 411351 states and 416638 transitions.
[2022-12-13 21:41:05,969 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2782
[2022-12-13 21:41:05,969 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:41:05,970 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:41:05,971 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-12-13 21:41:05,971 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:41:05,971 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:41:05,971 INFO  L85        PathProgramCache]: Analyzing trace with hash -1025715095, now seen corresponding path program 1 times
[2022-12-13 21:41:05,971 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:41:05,971 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000097218]
[2022-12-13 21:41:05,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:41:05,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:41:06,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:41:11,138 INFO  L134       CoverageAnalysis]: Checked inductivity of 1228 backedges. 1120 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2022-12-13 21:41:11,138 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:41:11,138 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000097218]
[2022-12-13 21:41:11,138 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000097218] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:41:11,138 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:41:11,139 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:41:11,139 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408010827]
[2022-12-13 21:41:11,139 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:41:11,140 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:41:11,140 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:41:11,141 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:41:11,141 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:41:11,141 INFO  L87              Difference]: Start difference. First operand 411351 states and 416638 transitions. Second operand  has 3 states, 3 states have (on average 891.3333333333334) internal successors, (2674), 3 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:16,241 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:41:16,241 INFO  L93              Difference]: Finished difference Result 826111 states and 836686 transitions.
[2022-12-13 21:41:16,241 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:41:16,241 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 891.3333333333334) internal successors, (2674), 3 states have internal predecessors, (2674), 0 states have call successors, (0), 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 2781
[2022-12-13 21:41:16,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:41:16,726 INFO  L225             Difference]: With dead ends: 826111
[2022-12-13 21:41:16,727 INFO  L226             Difference]: Without dead ends: 413058
[2022-12-13 21:41:16,897 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:41:16,898 INFO  L413           NwaCegarLoop]: 589 mSDtfsCounter, 463 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 4992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2022-12-13 21:41:16,898 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 648 Invalid, 4992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2022-12-13 21:41:17,240 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 413058 states.
[2022-12-13 21:41:20,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 413058 to 407946.
[2022-12-13 21:41:20,432 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 407946 states, 407945 states have (on average 1.0119672995134148) internal successors, (412827), 407945 states have internal predecessors, (412827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:20,852 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 407946 states to 407946 states and 412827 transitions.
[2022-12-13 21:41:20,852 INFO  L78                 Accepts]: Start accepts. Automaton has 407946 states and 412827 transitions. Word has length 2781
[2022-12-13 21:41:20,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:41:20,854 INFO  L495      AbstractCegarLoop]: Abstraction has 407946 states and 412827 transitions.
[2022-12-13 21:41:20,854 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 891.3333333333334) internal successors, (2674), 3 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:20,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 407946 states and 412827 transitions.
[2022-12-13 21:41:21,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2919
[2022-12-13 21:41:21,129 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:41:21,130 INFO  L195           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:41:21,130 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-12-13 21:41:21,130 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:41:21,131 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:41:21,131 INFO  L85        PathProgramCache]: Analyzing trace with hash -1259374287, now seen corresponding path program 1 times
[2022-12-13 21:41:21,131 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:41:21,131 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910837205]
[2022-12-13 21:41:21,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:41:21,132 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:41:21,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:41:27,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 2315 backedges. 1982 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked.
[2022-12-13 21:41:27,128 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:41:27,128 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910837205]
[2022-12-13 21:41:27,128 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910837205] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:41:27,128 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:41:27,129 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-12-13 21:41:27,129 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719067682]
[2022-12-13 21:41:27,129 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:41:27,130 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-12-13 21:41:27,130 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:41:27,131 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-12-13 21:41:27,131 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-12-13 21:41:27,132 INFO  L87              Difference]: Start difference. First operand 407946 states and 412827 transitions. Second operand  has 6 states, 6 states have (on average 431.1666666666667) internal successors, (2587), 5 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:37,125 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:41:37,125 INFO  L93              Difference]: Finished difference Result 902843 states and 913589 transitions.
[2022-12-13 21:41:37,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-12-13 21:41:37,126 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 431.1666666666667) internal successors, (2587), 5 states have internal predecessors, (2587), 0 states have call successors, (0), 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 2918
[2022-12-13 21:41:37,127 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:41:37,676 INFO  L225             Difference]: With dead ends: 902843
[2022-12-13 21:41:37,676 INFO  L226             Difference]: Without dead ends: 494899
[2022-12-13 21:41:37,849 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2022-12-13 21:41:37,849 INFO  L413           NwaCegarLoop]: 1292 mSDtfsCounter, 6649 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 12075 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6649 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 12327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 12075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time
[2022-12-13 21:41:37,849 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6649 Valid, 2545 Invalid, 12327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 12075 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time]
[2022-12-13 21:41:38,260 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 494899 states.
[2022-12-13 21:41:41,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 494899 to 414737.
[2022-12-13 21:41:41,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 414737 states, 414736 states have (on average 1.011797866594653) internal successors, (419629), 414736 states have internal predecessors, (419629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:42,510 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 414737 states to 414737 states and 419629 transitions.
[2022-12-13 21:41:42,510 INFO  L78                 Accepts]: Start accepts. Automaton has 414737 states and 419629 transitions. Word has length 2918
[2022-12-13 21:41:42,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:41:42,511 INFO  L495      AbstractCegarLoop]: Abstraction has 414737 states and 419629 transitions.
[2022-12-13 21:41:42,512 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 431.1666666666667) internal successors, (2587), 5 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:42,512 INFO  L276                IsEmpty]: Start isEmpty. Operand 414737 states and 419629 transitions.
[2022-12-13 21:41:42,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2971
[2022-12-13 21:41:42,773 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:41:42,774 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-13 21:41:42,774 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-12-13 21:41:42,774 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:41:42,774 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:41:42,774 INFO  L85        PathProgramCache]: Analyzing trace with hash 215157802, now seen corresponding path program 1 times
[2022-12-13 21:41:42,774 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:41:42,775 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014485827]
[2022-12-13 21:41:42,775 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:41:42,775 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:41:43,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:41:46,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 4015 backedges. 2644 proven. 0 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked.
[2022-12-13 21:41:46,490 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:41:46,490 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014485827]
[2022-12-13 21:41:46,490 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014485827] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:41:46,490 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:41:46,490 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:41:46,490 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414897074]
[2022-12-13 21:41:46,490 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:41:46,492 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:41:46,492 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:41:46,493 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:41:46,493 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:41:46,493 INFO  L87              Difference]: Start difference. First operand 414737 states and 419629 transitions. Second operand  has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:51,484 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:41:51,484 INFO  L93              Difference]: Finished difference Result 851550 states and 861577 transitions.
[2022-12-13 21:41:51,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:41:51,485 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 2970
[2022-12-13 21:41:51,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:41:51,972 INFO  L225             Difference]: With dead ends: 851550
[2022-12-13 21:41:51,972 INFO  L226             Difference]: Without dead ends: 435115
[2022-12-13 21:41:52,123 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:41:52,124 INFO  L413           NwaCegarLoop]: 1129 mSDtfsCounter, 1512 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 4381 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 4586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 4381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2022-12-13 21:41:52,124 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1339 Invalid, 4586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 4381 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2022-12-13 21:41:52,482 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 435115 states.
[2022-12-13 21:41:55,663 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 435115 to 423228.
[2022-12-13 21:41:55,845 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 423228 states, 423227 states have (on average 1.0117312931358349) internal successors, (428192), 423227 states have internal predecessors, (428192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:56,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 423228 states to 423228 states and 428192 transitions.
[2022-12-13 21:41:56,398 INFO  L78                 Accepts]: Start accepts. Automaton has 423228 states and 428192 transitions. Word has length 2970
[2022-12-13 21:41:56,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:41:56,399 INFO  L495      AbstractCegarLoop]: Abstraction has 423228 states and 428192 transitions.
[2022-12-13 21:41:56,399 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:41:56,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 423228 states and 428192 transitions.
[2022-12-13 21:41:56,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2994
[2022-12-13 21:41:56,661 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:41:56,662 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 21:41:56,662 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-12-13 21:41:56,662 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:41:56,663 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:41:56,663 INFO  L85        PathProgramCache]: Analyzing trace with hash -1347114571, now seen corresponding path program 1 times
[2022-12-13 21:41:56,663 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:41:56,663 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620516895]
[2022-12-13 21:41:56,663 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:41:56,664 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:41:57,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:42:00,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 2429 backedges. 2113 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2022-12-13 21:42:00,693 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:42:00,693 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620516895]
[2022-12-13 21:42:00,693 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620516895] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:42:00,693 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:42:00,693 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:42:00,693 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242023934]
[2022-12-13 21:42:00,693 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:42:00,694 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 21:42:00,695 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:42:00,696 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 21:42:00,696 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:42:00,696 INFO  L87              Difference]: Start difference. First operand 423228 states and 428192 transitions. Second operand  has 4 states, 4 states have (on average 669.5) internal successors, (2678), 3 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:08,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:42:08,394 INFO  L93              Difference]: Finished difference Result 848159 states and 858100 transitions.
[2022-12-13 21:42:08,394 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 21:42:08,394 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 669.5) internal successors, (2678), 3 states have internal predecessors, (2678), 0 states have call successors, (0), 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 2993
[2022-12-13 21:42:08,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:42:08,856 INFO  L225             Difference]: With dead ends: 848159
[2022-12-13 21:42:08,856 INFO  L226             Difference]: Without dead ends: 424933
[2022-12-13 21:42:09,153 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:42:09,154 INFO  L413           NwaCegarLoop]: 707 mSDtfsCounter, 3219 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 8151 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3219 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 8630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 8151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time
[2022-12-13 21:42:09,154 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3219 Valid, 938 Invalid, 8630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 8151 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time]
[2022-12-13 21:42:09,462 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 424933 states.
[2022-12-13 21:42:12,499 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 424933 to 421530.
[2022-12-13 21:42:12,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 421530 states, 421529 states have (on average 1.011728730407635) internal successors, (426473), 421529 states have internal predecessors, (426473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:13,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 421530 states to 421530 states and 426473 transitions.
[2022-12-13 21:42:13,003 INFO  L78                 Accepts]: Start accepts. Automaton has 421530 states and 426473 transitions. Word has length 2993
[2022-12-13 21:42:13,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:42:13,004 INFO  L495      AbstractCegarLoop]: Abstraction has 421530 states and 426473 transitions.
[2022-12-13 21:42:13,004 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 669.5) internal successors, (2678), 3 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:13,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 421530 states and 426473 transitions.
[2022-12-13 21:42:13,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3032
[2022-12-13 21:42:13,552 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:42:13,553 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:42:13,553 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-12-13 21:42:13,553 INFO  L420      AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:42:13,553 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:42:13,554 INFO  L85        PathProgramCache]: Analyzing trace with hash -1898433702, now seen corresponding path program 1 times
[2022-12-13 21:42:13,554 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:42:13,554 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598985286]
[2022-12-13 21:42:13,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:42:13,554 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:42:13,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:42:21,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 2377 backedges. 1507 proven. 254 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked.
[2022-12-13 21:42:21,267 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:42:21,267 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598985286]
[2022-12-13 21:42:21,267 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598985286] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 21:42:21,267 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63882902]
[2022-12-13 21:42:21,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:42:21,268 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 21:42:21,268 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 21:42:21,269 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 21:42:21,270 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-12-13 21:42:22,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:42:22,058 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-12-13 21:42:22,106 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 21:42:22,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 2377 backedges. 2121 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked.
[2022-12-13 21:42:22,948 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 21:42:22,949 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [63882902] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:42:22,949 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 21:42:22,949 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8
[2022-12-13 21:42:22,949 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138337249]
[2022-12-13 21:42:22,950 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:42:22,952 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:42:22,952 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:42:22,953 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:42:22,954 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2022-12-13 21:42:22,954 INFO  L87              Difference]: Start difference. First operand 421530 states and 426473 transitions. Second operand  has 3 states, 3 states have (on average 925.3333333333334) internal successors, (2776), 3 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:29,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:42:29,145 INFO  L93              Difference]: Finished difference Result 834557 states and 844247 transitions.
[2022-12-13 21:42:29,145 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:42:29,146 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 925.3333333333334) internal successors, (2776), 3 states have internal predecessors, (2776), 0 states have call successors, (0), 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 3031
[2022-12-13 21:42:29,147 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:42:29,619 INFO  L225             Difference]: With dead ends: 834557
[2022-12-13 21:42:29,619 INFO  L226             Difference]: Without dead ends: 413027
[2022-12-13 21:42:29,788 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3036 GetRequests, 3030 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2022-12-13 21:42:29,789 INFO  L413           NwaCegarLoop]: 2508 mSDtfsCounter, 1375 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 4320 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 4819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 4320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2022-12-13 21:42:29,789 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2728 Invalid, 4819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 4320 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2022-12-13 21:42:30,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 413027 states.
[2022-12-13 21:42:33,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 413027 to 406231.
[2022-12-13 21:42:33,517 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 406231 states, 406230 states have (on average 1.0085739605642123) internal successors, (409713), 406230 states have internal predecessors, (409713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:33,922 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 406231 states to 406231 states and 409713 transitions.
[2022-12-13 21:42:33,923 INFO  L78                 Accepts]: Start accepts. Automaton has 406231 states and 409713 transitions. Word has length 3031
[2022-12-13 21:42:33,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:42:33,924 INFO  L495      AbstractCegarLoop]: Abstraction has 406231 states and 409713 transitions.
[2022-12-13 21:42:33,924 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 925.3333333333334) internal successors, (2776), 3 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:33,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 406231 states and 409713 transitions.
[2022-12-13 21:42:34,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3046
[2022-12-13 21:42:34,373 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:42:34,374 INFO  L195           NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:42:34,381 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-12-13 21:42:34,575 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5409da5-a519-4cf3-96eb-623d3064af2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2022-12-13 21:42:34,576 INFO  L420      AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:42:34,577 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:42:34,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -2118724014, now seen corresponding path program 1 times
[2022-12-13 21:42:34,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:42:34,579 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745702121]
[2022-12-13 21:42:34,580 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:42:34,581 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:42:34,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:42:42,567 INFO  L134       CoverageAnalysis]: Checked inductivity of 3490 backedges. 2521 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked.
[2022-12-13 21:42:42,567 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:42:42,567 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745702121]
[2022-12-13 21:42:42,567 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745702121] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:42:42,567 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:42:42,567 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:42:42,567 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142578055]
[2022-12-13 21:42:42,567 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:42:42,569 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:42:42,569 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:42:42,571 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:42:42,571 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:42:42,571 INFO  L87              Difference]: Start difference. First operand 406231 states and 409713 transitions. Second operand  has 3 states, 3 states have (on average 785.0) internal successors, (2355), 3 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:48,073 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:42:48,073 INFO  L93              Difference]: Finished difference Result 836273 states and 843381 transitions.
[2022-12-13 21:42:48,074 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:42:48,074 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 785.0) internal successors, (2355), 3 states have internal predecessors, (2355), 0 states have call successors, (0), 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 3045
[2022-12-13 21:42:48,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:42:48,527 INFO  L225             Difference]: With dead ends: 836273
[2022-12-13 21:42:48,527 INFO  L226             Difference]: Without dead ends: 430044
[2022-12-13 21:42:48,622 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:42:48,622 INFO  L413           NwaCegarLoop]: 2825 mSDtfsCounter, 1312 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 4758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2022-12-13 21:42:48,623 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 2997 Invalid, 4758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2022-12-13 21:42:48,939 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 430044 states.
[2022-12-13 21:42:52,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 430044 to 413026.
[2022-12-13 21:42:52,280 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 413026 states, 413025 states have (on average 1.0083990073240119) internal successors, (416494), 413025 states have internal predecessors, (416494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:52,699 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 413026 states to 413026 states and 416494 transitions.
[2022-12-13 21:42:52,699 INFO  L78                 Accepts]: Start accepts. Automaton has 413026 states and 416494 transitions. Word has length 3045
[2022-12-13 21:42:52,699 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:42:52,699 INFO  L495      AbstractCegarLoop]: Abstraction has 413026 states and 416494 transitions.
[2022-12-13 21:42:52,700 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 785.0) internal successors, (2355), 3 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:42:52,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 413026 states and 416494 transitions.
[2022-12-13 21:42:53,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3066
[2022-12-13 21:42:53,165 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:42:53,165 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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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]
[2022-12-13 21:42:53,165 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-12-13 21:42:53,166 INFO  L420      AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:42:53,166 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:42:53,166 INFO  L85        PathProgramCache]: Analyzing trace with hash -2087294617, now seen corresponding path program 1 times
[2022-12-13 21:42:53,166 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:42:53,166 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250231439]
[2022-12-13 21:42:53,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:42:53,167 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:42:53,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:42:58,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 3461 backedges. 2619 proven. 0 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked.
[2022-12-13 21:42:58,514 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:42:58,514 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250231439]
[2022-12-13 21:42:58,514 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250231439] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:42:58,515 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:42:58,515 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:42:58,515 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123547121]
[2022-12-13 21:42:58,515 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:42:58,516 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:42:58,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:42:58,517 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:42:58,517 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:42:58,518 INFO  L87              Difference]: Start difference. First operand 413026 states and 416494 transitions. Second operand  has 3 states, 3 states have (on average 789.3333333333334) internal successors, (2368), 3 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:04,585 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:43:04,585 INFO  L93              Difference]: Finished difference Result 899079 states and 906820 transitions.
[2022-12-13 21:43:04,585 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:43:04,586 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 789.3333333333334) internal successors, (2368), 3 states have internal predecessors, (2368), 0 states have call successors, (0), 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 3065
[2022-12-13 21:43:04,586 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:43:05,137 INFO  L225             Difference]: With dead ends: 899079
[2022-12-13 21:43:05,138 INFO  L226             Difference]: Without dead ends: 486054
[2022-12-13 21:43:05,289 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:43:05,290 INFO  L413           NwaCegarLoop]: 616 mSDtfsCounter, 1849 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 949 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 949 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time
[2022-12-13 21:43:05,290 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 669 Invalid, 5171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [949 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time]
[2022-12-13 21:43:05,684 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 486054 states.
[2022-12-13 21:43:09,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 486054 to 469054.
[2022-12-13 21:43:09,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 469054 states, 469053 states have (on average 1.0083977716803858) internal successors, (472992), 469053 states have internal predecessors, (472992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:10,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 469054 states to 469054 states and 472992 transitions.
[2022-12-13 21:43:10,051 INFO  L78                 Accepts]: Start accepts. Automaton has 469054 states and 472992 transitions. Word has length 3065
[2022-12-13 21:43:10,052 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:43:10,052 INFO  L495      AbstractCegarLoop]: Abstraction has 469054 states and 472992 transitions.
[2022-12-13 21:43:10,052 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 789.3333333333334) internal successors, (2368), 3 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:10,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 469054 states and 472992 transitions.
[2022-12-13 21:43:10,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3140
[2022-12-13 21:43:10,558 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:43:10,559 INFO  L195           NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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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]
[2022-12-13 21:43:10,559 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-12-13 21:43:10,559 INFO  L420      AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:43:10,560 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:43:10,560 INFO  L85        PathProgramCache]: Analyzing trace with hash -20123080, now seen corresponding path program 1 times
[2022-12-13 21:43:10,560 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:43:10,560 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603722984]
[2022-12-13 21:43:10,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:43:10,561 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:43:10,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:43:13,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 3256 backedges. 1907 proven. 0 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked.
[2022-12-13 21:43:13,658 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:43:13,658 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603722984]
[2022-12-13 21:43:13,658 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603722984] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:43:13,658 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:43:13,658 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:43:13,658 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868402965]
[2022-12-13 21:43:13,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:43:13,659 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:43:13,659 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:43:13,660 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:43:13,661 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:43:13,661 INFO  L87              Difference]: Start difference. First operand 469054 states and 472992 transitions. Second operand  has 3 states, 3 states have (on average 802.3333333333334) internal successors, (2407), 3 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:19,983 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:43:19,983 INFO  L93              Difference]: Finished difference Result 951704 states and 959672 transitions.
[2022-12-13 21:43:19,983 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:43:19,984 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 802.3333333333334) internal successors, (2407), 3 states have internal predecessors, (2407), 0 states have call successors, (0), 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 3139
[2022-12-13 21:43:19,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:43:20,527 INFO  L225             Difference]: With dead ends: 951704
[2022-12-13 21:43:20,527 INFO  L226             Difference]: Without dead ends: 482652
[2022-12-13 21:43:20,669 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:43:20,669 INFO  L413           NwaCegarLoop]: 2749 mSDtfsCounter, 1167 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4403 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 4812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 4403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:43:20,669 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 2939 Invalid, 4812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 4403 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 21:43:21,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 482652 states.
[2022-12-13 21:43:24,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 482652 to 472444.
[2022-12-13 21:43:24,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 472444 states, 472443 states have (on average 1.007228385223191) internal successors, (475858), 472443 states have internal predecessors, (475858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:25,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 472444 states to 472444 states and 475858 transitions.
[2022-12-13 21:43:25,513 INFO  L78                 Accepts]: Start accepts. Automaton has 472444 states and 475858 transitions. Word has length 3139
[2022-12-13 21:43:25,514 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:43:25,514 INFO  L495      AbstractCegarLoop]: Abstraction has 472444 states and 475858 transitions.
[2022-12-13 21:43:25,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 802.3333333333334) internal successors, (2407), 3 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:25,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 472444 states and 475858 transitions.
[2022-12-13 21:43:25,803 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3429
[2022-12-13 21:43:25,804 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:43:25,804 INFO  L195           NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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[2022-12-13 21:43:25,805 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-12-13 21:43:25,805 INFO  L420      AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 21:43:25,805 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:43:25,805 INFO  L85        PathProgramCache]: Analyzing trace with hash 55230603, now seen corresponding path program 1 times
[2022-12-13 21:43:25,806 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:43:25,806 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870372902]
[2022-12-13 21:43:25,806 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:43:25,806 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:43:26,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:43:33,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 6078 backedges. 4200 proven. 0 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked.
[2022-12-13 21:43:33,496 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:43:33,497 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870372902]
[2022-12-13 21:43:33,497 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870372902] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:43:33,497 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:43:33,497 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:43:33,497 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573056311]
[2022-12-13 21:43:33,498 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:43:33,500 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 21:43:33,500 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:43:33,502 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 21:43:33,502 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:43:33,502 INFO  L87              Difference]: Start difference. First operand 472444 states and 475858 transitions. Second operand  has 3 states, 3 states have (on average 755.3333333333334) internal successors, (2266), 3 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:43:39,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:43:39,548 INFO  L93              Difference]: Finished difference Result 949985 states and 956784 transitions.
[2022-12-13 21:43:39,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 21:43:39,549 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 755.3333333333334) internal successors, (2266), 3 states have internal predecessors, (2266), 0 states have call successors, (0), 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 3428
[2022-12-13 21:43:39,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:43:40,089 INFO  L225             Difference]: With dead ends: 949985
[2022-12-13 21:43:40,089 INFO  L226             Difference]: Without dead ends: 475843
[2022-12-13 21:43:40,525 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 21:43:40,526 INFO  L413           NwaCegarLoop]: 2244 mSDtfsCounter, 1866 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 4915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:43:40,526 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 2306 Invalid, 4915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2022-12-13 21:43:40,887 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 475843 states.