./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem05_label45.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version e04fb08f
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_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem05_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8 --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 5dc3a3435973516847b7b3b8e13e1af5623f55b7eaef1838f58b8e303e0c8119
--- 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-e04fb08
[2022-11-16 11:57:45,228 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-16 11:57:45,230 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-16 11:57:45,274 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-16 11:57:45,279 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-16 11:57:45,281 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-16 11:57:45,284 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-16 11:57:45,289 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-16 11:57:45,294 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-16 11:57:45,295 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-16 11:57:45,297 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-16 11:57:45,299 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-16 11:57:45,302 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-16 11:57:45,305 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-16 11:57:45,307 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-16 11:57:45,309 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-16 11:57:45,312 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-16 11:57:45,318 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-16 11:57:45,319 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-16 11:57:45,321 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-16 11:57:45,325 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-16 11:57:45,327 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-16 11:57:45,330 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-16 11:57:45,331 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-16 11:57:45,340 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-16 11:57:45,344 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-16 11:57:45,345 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-16 11:57:45,346 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-16 11:57:45,348 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-16 11:57:45,349 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-16 11:57:45,349 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-16 11:57:45,351 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-16 11:57:45,357 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-16 11:57:45,359 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-16 11:57:45,360 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-16 11:57:45,360 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-16 11:57:45,361 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-16 11:57:45,361 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-16 11:57:45,362 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-16 11:57:45,363 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-16 11:57:45,364 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-16 11:57:45,365 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-16 11:57:45,411 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-16 11:57:45,411 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-16 11:57:45,412 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-16 11:57:45,413 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-16 11:57:45,414 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-16 11:57:45,414 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-16 11:57:45,415 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-16 11:57:45,415 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-16 11:57:45,416 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-16 11:57:45,416 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-16 11:57:45,417 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-16 11:57:45,418 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-16 11:57:45,418 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-16 11:57:45,418 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-16 11:57:45,419 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-11-16 11:57:45,419 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-16 11:57:45,420 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-11-16 11:57:45,420 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-16 11:57:45,420 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-11-16 11:57:45,420 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-16 11:57:45,421 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-11-16 11:57:45,421 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-16 11:57:45,422 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-16 11:57:45,422 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-16 11:57:45,422 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 11:57:45,423 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-16 11:57:45,423 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-16 11:57:45,423 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-16 11:57:45,424 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-16 11:57:45,424 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-16 11:57:45,424 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-16 11:57:45,424 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-16 11:57:45,425 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-16 11:57:45,425 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/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_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8
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 -> 5dc3a3435973516847b7b3b8e13e1af5623f55b7eaef1838f58b8e303e0c8119
[2022-11-16 11:57:45,748 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-16 11:57:45,772 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-16 11:57:45,775 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-16 11:57:45,776 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-16 11:57:45,777 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-16 11:57:45,778 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem05_label45.c
[2022-11-16 11:57:45,857 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/data/dffb0b072/d2bdbcd86f1b42aa91bde2ae7a464825/FLAGc05969122
[2022-11-16 11:57:46,905 INFO  L306              CDTParser]: Found 1 translation units.
[2022-11-16 11:57:46,906 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/sv-benchmarks/c/eca-rers2012/Problem05_label45.c
[2022-11-16 11:57:46,952 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/data/dffb0b072/d2bdbcd86f1b42aa91bde2ae7a464825/FLAGc05969122
[2022-11-16 11:57:47,250 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/data/dffb0b072/d2bdbcd86f1b42aa91bde2ae7a464825
[2022-11-16 11:57:47,253 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-16 11:57:47,256 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-16 11:57:47,259 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-16 11:57:47,260 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-16 11:57:47,263 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-16 11:57:47,264 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:47" (1/1) ...
[2022-11-16 11:57:47,266 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdfcd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:47, skipping insertion in model container
[2022-11-16 11:57:47,266 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:47" (1/1) ...
[2022-11-16 11:57:47,274 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-16 11:57:47,535 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-16 11:57:50,076 WARN  L229   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_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/sv-benchmarks/c/eca-rers2012/Problem05_label45.c[379980,379993]
[2022-11-16 11:57:50,109 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 11:57:50,121 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-16 11:57:51,391 WARN  L229   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_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/sv-benchmarks/c/eca-rers2012/Problem05_label45.c[379980,379993]
[2022-11-16 11:57:51,397 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-16 11:57:51,448 INFO  L208         MainTranslator]: Completed translation
[2022-11-16 11:57:51,449 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51 WrapperNode
[2022-11-16 11:57:51,449 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-16 11:57:51,450 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-16 11:57:51,450 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-16 11:57:51,450 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-16 11:57:51,457 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:51,551 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,107 INFO  L138                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12346
[2022-11-16 11:57:52,107 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-16 11:57:52,109 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-16 11:57:52,109 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-16 11:57:52,109 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-16 11:57:52,119 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,120 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,191 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,192 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,485 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,539 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,562 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,586 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,646 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-16 11:57:52,647 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-16 11:57:52,649 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-16 11:57:52,649 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-16 11:57:52,650 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (1/1) ...
[2022-11-16 11:57:52,658 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-16 11:57:52,670 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/z3
[2022-11-16 11:57:52,685 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-16 11:57:52,703 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc4d6536-7b87-4609-afa6-eb7cda2ebf90/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-16 11:57:52,740 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-16 11:57:52,740 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-16 11:57:52,740 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-16 11:57:52,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-16 11:57:52,936 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-16 11:57:52,939 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-16 11:58:02,966 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-16 11:58:02,991 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-16 11:58:02,991 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-16 11:58:02,996 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:58:02 BoogieIcfgContainer
[2022-11-16 11:58:02,997 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-16 11:58:02,999 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-16 11:58:03,000 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-16 11:58:03,004 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-16 11:58:03,004 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:57:47" (1/3) ...
[2022-11-16 11:58:03,005 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c99baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:58:03, skipping insertion in model container
[2022-11-16 11:58:03,005 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:51" (2/3) ...
[2022-11-16 11:58:03,005 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c99baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:58:03, skipping insertion in model container
[2022-11-16 11:58:03,006 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:58:02" (3/3) ...
[2022-11-16 11:58:03,007 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label45.c
[2022-11-16 11:58:03,029 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-16 11:58:03,029 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-16 11:58:03,134 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-16 11:58:03,142 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;@6eaa024c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-16 11:58:03,142 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-16 11:58:03,155 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)
[2022-11-16 11:58:03,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1676
[2022-11-16 11:58:03,283 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:58:03,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:58:03,287 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:58:03,293 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:58:03,295 INFO  L85        PathProgramCache]: Analyzing trace with hash 346506337, now seen corresponding path program 1 times
[2022-11-16 11:58:03,305 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:58:03,305 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042909802]
[2022-11-16 11:58:03,306 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:58:03,307 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:58:04,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:58:08,929 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:58:08,929 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:58:08,930 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042909802]
[2022-11-16 11:58:08,931 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042909802] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:58:08,931 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:58:08,932 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:58:08,934 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199932592]
[2022-11-16 11:58:08,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:58:08,945 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:58:08,947 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:58:08,988 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:58:08,989 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:58:08,998 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 558.3333333333334) internal successors, (1675), 2 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:19,284 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:58:19,284 INFO  L93              Difference]: Finished difference Result 6186 states and 11691 transitions.
[2022-11-16 11:58:19,285 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:58:19,288 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 2 states have internal predecessors, (1675), 0 states have call successors, (0), 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 1675
[2022-11-16 11:58:19,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:58:19,327 INFO  L225             Difference]: With dead ends: 6186
[2022-11-16 11:58:19,327 INFO  L226             Difference]: Without dead ends: 3937
[2022-11-16 11:58:19,335 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
[2022-11-16 11:58:19,339 INFO  L413           NwaCegarLoop]: 1285 mSDtfsCounter, 635 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 2651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 7662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2651 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time
[2022-11-16 11:58:19,340 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1442 Invalid, 7662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2651 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time]
[2022-11-16 11:58:19,367 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3937 states.
[2022-11-16 11:58:19,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3921.
[2022-11-16 11:58:19,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3921 states, 3920 states have (on average 1.7311224489795918) internal successors, (6786), 3920 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:19,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6786 transitions.
[2022-11-16 11:58:19,519 INFO  L78                 Accepts]: Start accepts. Automaton has 3921 states and 6786 transitions. Word has length 1675
[2022-11-16 11:58:19,523 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:58:19,524 INFO  L495      AbstractCegarLoop]: Abstraction has 3921 states and 6786 transitions.
[2022-11-16 11:58:19,526 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 558.3333333333334) internal successors, (1675), 2 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:19,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 3921 states and 6786 transitions.
[2022-11-16 11:58:19,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1687
[2022-11-16 11:58:19,599 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:58:19,600 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:58:19,601 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-16 11:58:19,601 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:58:19,601 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:58:19,602 INFO  L85        PathProgramCache]: Analyzing trace with hash 82172657, now seen corresponding path program 1 times
[2022-11-16 11:58:19,602 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:58:19,602 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959888246]
[2022-11-16 11:58:19,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:58:19,603 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:58:19,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:58:21,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:58:21,832 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:58:21,833 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959888246]
[2022-11-16 11:58:21,834 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959888246] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:58:21,834 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:58:21,835 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:58:21,835 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466204572]
[2022-11-16 11:58:21,835 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:58:21,840 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:58:21,841 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:58:21,841 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:58:21,842 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:58:21,844 INFO  L87              Difference]: Start difference. First operand 3921 states and 6786 transitions. Second operand  has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:30,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:58:30,093 INFO  L93              Difference]: Finished difference Result 11272 states and 19663 transitions.
[2022-11-16 11:58:30,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:58:30,094 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1686
[2022-11-16 11:58:30,095 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:58:30,131 INFO  L225             Difference]: With dead ends: 11272
[2022-11-16 11:58:30,132 INFO  L226             Difference]: Without dead ends: 7353
[2022-11-16 11:58:30,145 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
[2022-11-16 11:58:30,147 INFO  L413           NwaCegarLoop]: 1547 mSDtfsCounter, 2704 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 2374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2374 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time
[2022-11-16 11:58:30,148 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 1695 Invalid, 6848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2374 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time]
[2022-11-16 11:58:30,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7353 states.
[2022-11-16 11:58:30,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351.
[2022-11-16 11:58:30,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7351 states, 7350 states have (on average 1.5522448979591836) internal successors, (11409), 7350 states have internal predecessors, (11409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:30,366 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 11409 transitions.
[2022-11-16 11:58:30,367 INFO  L78                 Accepts]: Start accepts. Automaton has 7351 states and 11409 transitions. Word has length 1686
[2022-11-16 11:58:30,367 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:58:30,368 INFO  L495      AbstractCegarLoop]: Abstraction has 7351 states and 11409 transitions.
[2022-11-16 11:58:30,369 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:30,369 INFO  L276                IsEmpty]: Start isEmpty. Operand 7351 states and 11409 transitions.
[2022-11-16 11:58:30,454 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1705
[2022-11-16 11:58:30,454 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:58:30,455 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:58:30,456 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-16 11:58:30,456 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:58:30,457 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:58:30,458 INFO  L85        PathProgramCache]: Analyzing trace with hash -522001981, now seen corresponding path program 1 times
[2022-11-16 11:58:30,460 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:58:30,466 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724080886]
[2022-11-16 11:58:30,467 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:58:30,468 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:58:30,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:58:33,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:58:33,194 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:58:33,195 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724080886]
[2022-11-16 11:58:33,195 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724080886] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:58:33,196 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:58:33,196 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:58:33,196 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62590211]
[2022-11-16 11:58:33,197 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:58:33,199 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:58:33,199 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:58:33,200 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:58:33,200 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:58:33,202 INFO  L87              Difference]: Start difference. First operand 7351 states and 11409 transitions. Second operand  has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:41,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:58:41,773 INFO  L93              Difference]: Finished difference Result 21579 states and 33619 transitions.
[2022-11-16 11:58:41,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:58:41,775 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 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 1704
[2022-11-16 11:58:41,775 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:58:41,826 INFO  L225             Difference]: With dead ends: 21579
[2022-11-16 11:58:41,827 INFO  L226             Difference]: Without dead ends: 14230
[2022-11-16 11:58:41,836 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
[2022-11-16 11:58:41,837 INFO  L413           NwaCegarLoop]: 3689 mSDtfsCounter, 1860 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 5334 mSolverCounterSat, 2029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 7363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 5334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2022-11-16 11:58:41,838 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 3932 Invalid, 7363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 5334 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time]
[2022-11-16 11:58:41,854 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14230 states.
[2022-11-16 11:58:42,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14230 to 14166.
[2022-11-16 11:58:42,221 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14166 states, 14165 states have (on average 1.399011648429227) internal successors, (19817), 14165 states have internal predecessors, (19817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:42,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 19817 transitions.
[2022-11-16 11:58:42,279 INFO  L78                 Accepts]: Start accepts. Automaton has 14166 states and 19817 transitions. Word has length 1704
[2022-11-16 11:58:42,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:58:42,280 INFO  L495      AbstractCegarLoop]: Abstraction has 14166 states and 19817 transitions.
[2022-11-16 11:58:42,282 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:42,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 14166 states and 19817 transitions.
[2022-11-16 11:58:42,365 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1722
[2022-11-16 11:58:42,365 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:58:42,367 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:58:42,367 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-16 11:58:42,367 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:58:42,369 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:58:42,370 INFO  L85        PathProgramCache]: Analyzing trace with hash -1564148797, now seen corresponding path program 1 times
[2022-11-16 11:58:42,371 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:58:42,371 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260047916]
[2022-11-16 11:58:42,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:58:42,372 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:58:42,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:58:44,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:58:44,378 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:58:44,379 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260047916]
[2022-11-16 11:58:44,379 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260047916] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:58:44,379 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:58:44,380 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:58:44,380 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362229745]
[2022-11-16 11:58:44,380 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:58:44,383 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:58:44,384 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:58:44,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:58:44,384 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:58:44,386 INFO  L87              Difference]: Start difference. First operand 14166 states and 19817 transitions. Second operand  has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 2 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:52,611 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:58:52,611 INFO  L93              Difference]: Finished difference Result 41916 states and 58675 transitions.
[2022-11-16 11:58:52,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:58:52,612 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 2 states have internal predecessors, (1721), 0 states have call successors, (0), 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 1721
[2022-11-16 11:58:52,612 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:58:52,674 INFO  L225             Difference]: With dead ends: 41916
[2022-11-16 11:58:52,675 INFO  L226             Difference]: Without dead ends: 27752
[2022-11-16 11:58:52,693 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
[2022-11-16 11:58:52,694 INFO  L413           NwaCegarLoop]: 1080 mSDtfsCounter, 3146 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 2127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 6900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-11-16 11:58:52,694 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 1167 Invalid, 6900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2127 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2022-11-16 11:58:52,726 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27752 states.
[2022-11-16 11:58:53,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27752 to 27752.
[2022-11-16 11:58:53,161 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27752 states, 27751 states have (on average 1.3435551872004612) internal successors, (37285), 27751 states have internal predecessors, (37285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:53,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27752 states to 27752 states and 37285 transitions.
[2022-11-16 11:58:53,218 INFO  L78                 Accepts]: Start accepts. Automaton has 27752 states and 37285 transitions. Word has length 1721
[2022-11-16 11:58:53,218 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:58:53,219 INFO  L495      AbstractCegarLoop]: Abstraction has 27752 states and 37285 transitions.
[2022-11-16 11:58:53,219 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 573.6666666666666) internal successors, (1721), 2 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:58:53,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 27752 states and 37285 transitions.
[2022-11-16 11:58:53,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1781
[2022-11-16 11:58:53,297 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:58:53,298 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:58:53,299 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-16 11:58:53,299 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:58:53,299 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:58:53,300 INFO  L85        PathProgramCache]: Analyzing trace with hash -739289226, now seen corresponding path program 1 times
[2022-11-16 11:58:53,301 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:58:53,301 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272805207]
[2022-11-16 11:58:53,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:58:53,302 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:58:53,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:58:54,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:58:54,716 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:58:54,716 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272805207]
[2022-11-16 11:58:54,716 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272805207] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:58:54,717 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:58:54,717 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:58:54,719 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622505012]
[2022-11-16 11:58:54,719 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:58:54,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:58:54,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:58:54,722 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:58:54,722 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:58:54,723 INFO  L87              Difference]: Start difference. First operand 27752 states and 37285 transitions. Second operand  has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 2 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:03,390 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:59:03,391 INFO  L93              Difference]: Finished difference Result 69192 states and 94946 transitions.
[2022-11-16 11:59:03,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:59:03,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 2 states have internal predecessors, (1780), 0 states have call successors, (0), 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 1780
[2022-11-16 11:59:03,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:59:03,489 INFO  L225             Difference]: With dead ends: 69192
[2022-11-16 11:59:03,489 INFO  L226             Difference]: Without dead ends: 41442
[2022-11-16 11:59:03,520 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
[2022-11-16 11:59:03,522 INFO  L413           NwaCegarLoop]: 1877 mSDtfsCounter, 1855 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 5463 mSolverCounterSat, 2124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 7587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2124 IncrementalHoareTripleChecker+Valid, 5463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-11-16 11:59:03,522 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 2096 Invalid, 7587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2124 Valid, 5463 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-11-16 11:59:03,569 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41442 states.
[2022-11-16 11:59:04,092 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41442 to 41352.
[2022-11-16 11:59:04,139 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41352 states, 41351 states have (on average 1.3254093008633407) internal successors, (54807), 41351 states have internal predecessors, (54807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:04,210 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41352 states to 41352 states and 54807 transitions.
[2022-11-16 11:59:04,210 INFO  L78                 Accepts]: Start accepts. Automaton has 41352 states and 54807 transitions. Word has length 1780
[2022-11-16 11:59:04,211 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:59:04,211 INFO  L495      AbstractCegarLoop]: Abstraction has 41352 states and 54807 transitions.
[2022-11-16 11:59:04,212 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 2 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:04,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 41352 states and 54807 transitions.
[2022-11-16 11:59:04,295 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1785
[2022-11-16 11:59:04,296 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:59:04,297 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:59:04,297 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-16 11:59:04,298 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:59:04,298 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:59:04,299 INFO  L85        PathProgramCache]: Analyzing trace with hash 931597295, now seen corresponding path program 1 times
[2022-11-16 11:59:04,301 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:59:04,301 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22192288]
[2022-11-16 11:59:04,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:59:04,302 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:59:04,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:59:06,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-16 11:59:06,346 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:59:06,346 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22192288]
[2022-11-16 11:59:06,346 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22192288] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:59:06,347 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:59:06,347 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:59:06,347 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492304630]
[2022-11-16 11:59:06,347 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:59:06,349 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:59:06,350 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:59:06,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:59:06,350 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:59:06,351 INFO  L87              Difference]: Start difference. First operand 41352 states and 54807 transitions. Second operand  has 3 states, 3 states have (on average 594.6666666666666) internal successors, (1784), 3 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:14,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:59:14,057 INFO  L93              Difference]: Finished difference Result 82785 states and 109768 transitions.
[2022-11-16 11:59:14,059 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:59:14,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 594.6666666666666) internal successors, (1784), 3 states have internal predecessors, (1784), 0 states have call successors, (0), 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 1784
[2022-11-16 11:59:14,064 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:59:14,134 INFO  L225             Difference]: With dead ends: 82785
[2022-11-16 11:59:14,134 INFO  L226             Difference]: Without dead ends: 41435
[2022-11-16 11:59:14,161 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
[2022-11-16 11:59:14,162 INFO  L413           NwaCegarLoop]: 3007 mSDtfsCounter, 447 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6173 mSolverCounterSat, 1171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 7344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1171 IncrementalHoareTripleChecker+Valid, 6173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2022-11-16 11:59:14,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 3147 Invalid, 7344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1171 Valid, 6173 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2022-11-16 11:59:14,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41435 states.
[2022-11-16 11:59:14,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41435 to 41354.
[2022-11-16 11:59:14,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41354 states, 41353 states have (on average 1.2998089618649191) internal successors, (53751), 41353 states have internal predecessors, (53751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:14,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41354 states to 41354 states and 53751 transitions.
[2022-11-16 11:59:14,753 INFO  L78                 Accepts]: Start accepts. Automaton has 41354 states and 53751 transitions. Word has length 1784
[2022-11-16 11:59:14,755 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:59:14,755 INFO  L495      AbstractCegarLoop]: Abstraction has 41354 states and 53751 transitions.
[2022-11-16 11:59:14,756 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 594.6666666666666) internal successors, (1784), 3 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:14,756 INFO  L276                IsEmpty]: Start isEmpty. Operand 41354 states and 53751 transitions.
[2022-11-16 11:59:14,823 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1787
[2022-11-16 11:59:14,823 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:59:14,824 INFO  L195           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-11-16 11:59:14,824 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-16 11:59:14,825 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:59:14,825 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:59:14,826 INFO  L85        PathProgramCache]: Analyzing trace with hash 1020437420, now seen corresponding path program 1 times
[2022-11-16 11:59:14,826 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:59:14,826 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969146360]
[2022-11-16 11:59:14,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:59:14,827 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:59:15,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:59:16,225 INFO  L134       CoverageAnalysis]: Checked inductivity of 127 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked.
[2022-11-16 11:59:16,225 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:59:16,225 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969146360]
[2022-11-16 11:59:16,225 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969146360] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:59:16,226 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:59:16,226 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-16 11:59:16,226 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914043436]
[2022-11-16 11:59:16,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:59:16,228 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:59:16,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:59:16,229 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:59:16,229 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:59:16,230 INFO  L87              Difference]: Start difference. First operand 41354 states and 53751 transitions. Second operand  has 3 states, 3 states have (on average 566.0) internal successors, (1698), 2 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:23,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:59:23,954 INFO  L93              Difference]: Finished difference Result 103080 states and 132934 transitions.
[2022-11-16 11:59:23,959 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:59:23,960 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 566.0) internal successors, (1698), 2 states have internal predecessors, (1698), 0 states have call successors, (0), 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 1786
[2022-11-16 11:59:23,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:59:24,041 INFO  L225             Difference]: With dead ends: 103080
[2022-11-16 11:59:24,042 INFO  L226             Difference]: Without dead ends: 61728
[2022-11-16 11:59:24,063 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
[2022-11-16 11:59:24,064 INFO  L413           NwaCegarLoop]: 1642 mSDtfsCounter, 2466 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4806 mSolverCounterSat, 1698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 6504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1698 IncrementalHoareTripleChecker+Valid, 4806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2022-11-16 11:59:24,065 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 1825 Invalid, 6504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1698 Valid, 4806 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time]
[2022-11-16 11:59:24,133 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61728 states.
[2022-11-16 11:59:24,685 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61728 to 60026.
[2022-11-16 11:59:24,733 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60026 states, 60025 states have (on average 1.1528029987505206) internal successors, (69197), 60025 states have internal predecessors, (69197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:24,812 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60026 states to 60026 states and 69197 transitions.
[2022-11-16 11:59:24,812 INFO  L78                 Accepts]: Start accepts. Automaton has 60026 states and 69197 transitions. Word has length 1786
[2022-11-16 11:59:24,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:59:24,812 INFO  L495      AbstractCegarLoop]: Abstraction has 60026 states and 69197 transitions.
[2022-11-16 11:59:24,813 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 566.0) internal successors, (1698), 2 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:24,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 60026 states and 69197 transitions.
[2022-11-16 11:59:24,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1869
[2022-11-16 11:59:24,907 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:59:24,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2022-11-16 11:59:24,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-16 11:59:24,909 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:59:24,909 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:59:24,910 INFO  L85        PathProgramCache]: Analyzing trace with hash 9604577, now seen corresponding path program 1 times
[2022-11-16 11:59:24,910 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:59:24,910 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350480440]
[2022-11-16 11:59:24,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:59:24,911 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:59:25,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:59:26,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 294 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked.
[2022-11-16 11:59:26,512 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:59:26,512 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350480440]
[2022-11-16 11:59:26,512 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350480440] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:59:26,512 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:59:26,513 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:59:26,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455700398]
[2022-11-16 11:59:26,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:59:26,516 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:59:26,516 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:59:26,517 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:59:26,517 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:59:26,518 INFO  L87              Difference]: Start difference. First operand 60026 states and 69197 transitions. Second operand  has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:34,956 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:59:34,956 INFO  L93              Difference]: Finished difference Result 174398 states and 200843 transitions.
[2022-11-16 11:59:34,957 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:59:34,957 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 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 1868
[2022-11-16 11:59:34,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:59:35,138 INFO  L225             Difference]: With dead ends: 174398
[2022-11-16 11:59:35,138 INFO  L226             Difference]: Without dead ends: 114374
[2022-11-16 11:59:35,181 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
[2022-11-16 11:59:35,182 INFO  L413           NwaCegarLoop]: 3758 mSDtfsCounter, 1952 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 4803 mSolverCounterSat, 2194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 6997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 4803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2022-11-16 11:59:35,183 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 3994 Invalid, 6997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 4803 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2022-11-16 11:59:35,319 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 114374 states.
[2022-11-16 11:59:36,852 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 114374 to 107568.
[2022-11-16 11:59:36,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107568 states, 107567 states have (on average 1.110572945234133) internal successors, (119461), 107567 states have internal predecessors, (119461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:37,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107568 states to 107568 states and 119461 transitions.
[2022-11-16 11:59:37,224 INFO  L78                 Accepts]: Start accepts. Automaton has 107568 states and 119461 transitions. Word has length 1868
[2022-11-16 11:59:37,224 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:59:37,224 INFO  L495      AbstractCegarLoop]: Abstraction has 107568 states and 119461 transitions.
[2022-11-16 11:59:37,224 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:37,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 107568 states and 119461 transitions.
[2022-11-16 11:59:37,332 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1967
[2022-11-16 11:59:37,332 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:59:37,333 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2022-11-16 11:59:37,333 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-16 11:59:37,333 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:59:37,333 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:59:37,334 INFO  L85        PathProgramCache]: Analyzing trace with hash -2121936471, now seen corresponding path program 1 times
[2022-11-16 11:59:37,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:59:37,334 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169471125]
[2022-11-16 11:59:37,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:59:37,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:59:37,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:59:40,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 469 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2022-11-16 11:59:40,511 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:59:40,512 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169471125]
[2022-11-16 11:59:40,512 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169471125] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:59:40,512 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:59:40,512 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:59:40,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514901661]
[2022-11-16 11:59:40,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:59:40,515 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:59:40,515 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:59:40,516 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:59:40,516 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:59:40,517 INFO  L87              Difference]: Start difference. First operand 107568 states and 119461 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)
[2022-11-16 11:59:49,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 11:59:49,379 INFO  L93              Difference]: Finished difference Result 260998 states and 288890 transitions.
[2022-11-16 11:59:49,379 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 11:59:49,379 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 1966
[2022-11-16 11:59:49,380 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 11:59:49,579 INFO  L225             Difference]: With dead ends: 260998
[2022-11-16 11:59:49,579 INFO  L226             Difference]: Without dead ends: 153432
[2022-11-16 11:59:49,952 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
[2022-11-16 11:59:49,954 INFO  L413           NwaCegarLoop]: 1016 mSDtfsCounter, 2134 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 5102 mSolverCounterSat, 2119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 7221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2119 IncrementalHoareTripleChecker+Valid, 5102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2022-11-16 11:59:49,955 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 1116 Invalid, 7221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2119 Valid, 5102 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2022-11-16 11:59:50,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 153432 states.
[2022-11-16 11:59:51,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 153432 to 148316.
[2022-11-16 11:59:51,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 148316 states, 148315 states have (on average 1.0968681522435357) internal successors, (162682), 148315 states have internal predecessors, (162682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 11:59:52,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148316 states to 148316 states and 162682 transitions.
[2022-11-16 11:59:52,347 INFO  L78                 Accepts]: Start accepts. Automaton has 148316 states and 162682 transitions. Word has length 1966
[2022-11-16 11:59:52,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 11:59:52,348 INFO  L495      AbstractCegarLoop]: Abstraction has 148316 states and 162682 transitions.
[2022-11-16 11:59:52,349 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)
[2022-11-16 11:59:52,349 INFO  L276                IsEmpty]: Start isEmpty. Operand 148316 states and 162682 transitions.
[2022-11-16 11:59:52,496 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2059
[2022-11-16 11:59:52,496 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 11:59:52,497 INFO  L195           NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 11:59:52,497 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-16 11:59:52,497 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 11:59:52,497 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 11:59:52,498 INFO  L85        PathProgramCache]: Analyzing trace with hash -1522567005, now seen corresponding path program 1 times
[2022-11-16 11:59:52,498 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 11:59:52,498 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643858424]
[2022-11-16 11:59:52,499 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 11:59:52,499 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 11:59:53,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 11:59:56,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 813 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked.
[2022-11-16 11:59:56,260 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 11:59:56,261 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643858424]
[2022-11-16 11:59:56,261 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643858424] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 11:59:56,261 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 11:59:56,261 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 11:59:56,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780252385]
[2022-11-16 11:59:56,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 11:59:56,264 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 11:59:56,264 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 11:59:56,265 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 11:59:56,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 11:59:56,266 INFO  L87              Difference]: Start difference. First operand 148316 states and 162682 transitions. Second operand  has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:05,972 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:00:05,973 INFO  L93              Difference]: Finished difference Result 339158 states and 373084 transitions.
[2022-11-16 12:00:05,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 12:00:05,974 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 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 2058
[2022-11-16 12:00:05,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:00:06,209 INFO  L225             Difference]: With dead ends: 339158
[2022-11-16 12:00:06,209 INFO  L226             Difference]: Without dead ends: 189128
[2022-11-16 12:00:06,267 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
[2022-11-16 12:00:06,268 INFO  L413           NwaCegarLoop]: 3986 mSDtfsCounter, 1789 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 6268 mSolverCounterSat, 941 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 7209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 941 IncrementalHoareTripleChecker+Valid, 6268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-11-16 12:00:06,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 4209 Invalid, 7209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [941 Valid, 6268 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-11-16 12:00:06,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189128 states.
[2022-11-16 12:00:08,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189128 to 189059.
[2022-11-16 12:00:08,743 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 189059 states, 189058 states have (on average 1.0855134403199018) internal successors, (205225), 189058 states have internal predecessors, (205225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:09,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 189059 states to 189059 states and 205225 transitions.
[2022-11-16 12:00:09,090 INFO  L78                 Accepts]: Start accepts. Automaton has 189059 states and 205225 transitions. Word has length 2058
[2022-11-16 12:00:09,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:00:09,090 INFO  L495      AbstractCegarLoop]: Abstraction has 189059 states and 205225 transitions.
[2022-11-16 12:00:09,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:09,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 189059 states and 205225 transitions.
[2022-11-16 12:00:09,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2217
[2022-11-16 12:00:09,331 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:00:09,333 INFO  L195           NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:00:09,333 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-16 12:00:09,333 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:00:09,334 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:00:09,334 INFO  L85        PathProgramCache]: Analyzing trace with hash 1490052541, now seen corresponding path program 1 times
[2022-11-16 12:00:09,335 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:00:09,335 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706061086]
[2022-11-16 12:00:09,335 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:00:09,335 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:00:10,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:00:11,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 1085 backedges. 864 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked.
[2022-11-16 12:00:11,596 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:00:11,596 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706061086]
[2022-11-16 12:00:11,596 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706061086] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:00:11,596 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:00:11,597 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 12:00:11,597 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207100278]
[2022-11-16 12:00:11,597 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:00:11,599 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 12:00:11,599 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:00:11,600 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 12:00:11,600 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 12:00:11,601 INFO  L87              Difference]: Start difference. First operand 189059 states and 205225 transitions. Second operand  has 3 states, 3 states have (on average 672.6666666666666) internal successors, (2018), 3 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:20,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:00:20,965 INFO  L93              Difference]: Finished difference Result 451133 states and 493678 transitions.
[2022-11-16 12:00:20,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 12:00:20,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 672.6666666666666) internal successors, (2018), 3 states have internal predecessors, (2018), 0 states have call successors, (0), 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 2216
[2022-11-16 12:00:20,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:00:21,289 INFO  L225             Difference]: With dead ends: 451133
[2022-11-16 12:00:21,290 INFO  L226             Difference]: Without dead ends: 258666
[2022-11-16 12:00:21,363 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
[2022-11-16 12:00:21,365 INFO  L413           NwaCegarLoop]: 3145 mSDtfsCounter, 2123 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4870 mSolverCounterSat, 2314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 7184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2314 IncrementalHoareTripleChecker+Valid, 4870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2022-11-16 12:00:21,365 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 3247 Invalid, 7184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2314 Valid, 4870 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2022-11-16 12:00:21,593 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 258666 states.
[2022-11-16 12:00:24,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 258666 to 251859.
[2022-11-16 12:00:24,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251859 states, 251858 states have (on average 1.0879106480635914) internal successors, (273999), 251858 states have internal predecessors, (273999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:24,990 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251859 states to 251859 states and 273999 transitions.
[2022-11-16 12:00:24,990 INFO  L78                 Accepts]: Start accepts. Automaton has 251859 states and 273999 transitions. Word has length 2216
[2022-11-16 12:00:24,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-16 12:00:24,991 INFO  L495      AbstractCegarLoop]: Abstraction has 251859 states and 273999 transitions.
[2022-11-16 12:00:24,991 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 672.6666666666666) internal successors, (2018), 3 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:24,991 INFO  L276                IsEmpty]: Start isEmpty. Operand 251859 states and 273999 transitions.
[2022-11-16 12:00:25,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2223
[2022-11-16 12:00:25,906 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-16 12:00:25,907 INFO  L195           NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-16 12:00:25,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-11-16 12:00:25,908 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-16 12:00:25,908 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-16 12:00:25,909 INFO  L85        PathProgramCache]: Analyzing trace with hash -1417022425, now seen corresponding path program 1 times
[2022-11-16 12:00:25,909 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-16 12:00:25,910 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529859816]
[2022-11-16 12:00:25,910 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-16 12:00:25,910 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-16 12:00:26,187 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-16 12:00:28,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 1091 backedges. 766 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked.
[2022-11-16 12:00:28,479 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-16 12:00:28,479 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529859816]
[2022-11-16 12:00:28,479 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529859816] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-16 12:00:28,479 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-16 12:00:28,480 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-16 12:00:28,480 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348326419]
[2022-11-16 12:00:28,481 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-16 12:00:28,484 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-16 12:00:28,484 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-16 12:00:28,485 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-16 12:00:28,485 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-16 12:00:28,486 INFO  L87              Difference]: Start difference. First operand 251859 states and 273999 transitions. Second operand  has 3 states, 3 states have (on average 645.0) internal successors, (1935), 3 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-16 12:00:38,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-16 12:00:38,324 INFO  L93              Difference]: Finished difference Result 583514 states and 637266 transitions.
[2022-11-16 12:00:38,324 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-16 12:00:38,325 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 645.0) internal successors, (1935), 3 states have internal predecessors, (1935), 0 states have call successors, (0), 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 2222
[2022-11-16 12:00:38,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-16 12:00:38,740 INFO  L225             Difference]: With dead ends: 583514
[2022-11-16 12:00:38,740 INFO  L226             Difference]: Without dead ends: 331657
[2022-11-16 12:00:38,830 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
[2022-11-16 12:00:38,831 INFO  L413           NwaCegarLoop]: 3509 mSDtfsCounter, 1913 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 5185 mSolverCounterSat, 1181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 6366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 5185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2022-11-16 12:00:38,832 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 3854 Invalid, 6366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1181 Valid, 5185 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time]
[2022-11-16 12:00:39,161 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 331657 states.