./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label16.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 521ecb21a44481abd134a70daa874bfd77abccd47d2184b1e98394b3da5fb6e0
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-13 20:32:26,365 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 20:32:26,367 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 20:32:26,379 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 20:32:26,380 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 20:32:26,380 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 20:32:26,381 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 20:32:26,382 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 20:32:26,383 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 20:32:26,384 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 20:32:26,384 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 20:32:26,385 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 20:32:26,385 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 20:32:26,386 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 20:32:26,387 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 20:32:26,387 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 20:32:26,388 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 20:32:26,388 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 20:32:26,389 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 20:32:26,390 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 20:32:26,391 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 20:32:26,392 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 20:32:26,393 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 20:32:26,393 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 20:32:26,395 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 20:32:26,396 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 20:32:26,396 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 20:32:26,396 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 20:32:26,397 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 20:32:26,397 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 20:32:26,397 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 20:32:26,398 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 20:32:26,398 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 20:32:26,399 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 20:32:26,399 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 20:32:26,400 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 20:32:26,400 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 20:32:26,400 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 20:32:26,400 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 20:32:26,401 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 20:32:26,401 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 20:32:26,402 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-12-13 20:32:26,422 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 20:32:26,423 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 20:32:26,423 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 20:32:26,423 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 20:32:26,429 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 20:32:26,429 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 20:32:26,430 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 20:32:26,430 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 20:32:26,430 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 20:32:26,430 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 20:32:26,430 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 20:32:26,431 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 20:32:26,431 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 20:32:26,431 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 20:32:26,431 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 20:32:26,431 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 20:32:26,431 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 20:32:26,432 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 20:32:26,432 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 20:32:26,433 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 20:32:26,433 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 20:32:26,434 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 20:32:26,434 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 20:32:26,434 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 521ecb21a44481abd134a70daa874bfd77abccd47d2184b1e98394b3da5fb6e0
[2022-12-13 20:32:26,598 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 20:32:26,618 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 20:32:26,620 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 20:32:26,622 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 20:32:26,622 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 20:32:26,623 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem07_label16.c
[2022-12-13 20:32:29,267 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 20:32:30,345 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 20:32:30,345 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/sv-benchmarks/c/eca-rers2012/Problem07_label16.c
[2022-12-13 20:32:30,519 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/data/b2acee6aa/cf8afa574dc34442b7e96d6cb3d9b742/FLAG255484ce6
[2022-12-13 20:32:30,528 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/data/b2acee6aa/cf8afa574dc34442b7e96d6cb3d9b742
[2022-12-13 20:32:30,529 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 20:32:30,530 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 20:32:30,531 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 20:32:30,531 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 20:32:30,533 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 20:32:30,534 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:32:30" (1/1) ...
[2022-12-13 20:32:30,534 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4711205c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:30, skipping insertion in model container
[2022-12-13 20:32:30,535 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:32:30" (1/1) ...
[2022-12-13 20:32:30,539 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 20:32:31,179 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 20:32:40,865 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/sv-benchmarks/c/eca-rers2012/Problem07_label16.c[2775464,2775477]
[2022-12-13 20:32:40,918 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 20:32:40,927 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 20:32:46,844 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/sv-benchmarks/c/eca-rers2012/Problem07_label16.c[2775464,2775477]
[2022-12-13 20:32:46,848 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 20:32:47,443 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 20:32:47,443 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47 WrapperNode
[2022-12-13 20:32:47,443 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 20:32:47,444 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 20:32:47,444 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 20:32:47,444 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 20:32:47,449 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:47,769 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:49,005 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773
[2022-12-13 20:32:49,006 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 20:32:49,006 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 20:32:49,006 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 20:32:49,006 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 20:32:49,013 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:49,013 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:49,243 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:49,243 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:49,891 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:49,983 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:50,085 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:50,136 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:50,398 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 20:32:50,399 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 20:32:50,399 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 20:32:50,399 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 20:32:50,400 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (1/1) ...
[2022-12-13 20:32:50,405 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 20:32:50,413 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 20:32:50,423 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 20:32:50,425 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7583ffd8-fb36-4d38-b744-75396fa3424f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 20:32:50,448 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 20:32:50,448 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 20:32:50,448 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 20:32:50,448 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 20:32:50,546 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 20:32:50,548 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 20:33:19,910 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 20:33:19,945 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 20:33:19,946 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 20:33:19,952 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:33:19 BoogieIcfgContainer
[2022-12-13 20:33:19,952 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 20:33:19,954 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 20:33:19,954 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 20:33:19,956 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 20:33:19,956 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:32:30" (1/3) ...
[2022-12-13 20:33:19,957 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7098e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:33:19, skipping insertion in model container
[2022-12-13 20:33:19,957 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:32:47" (2/3) ...
[2022-12-13 20:33:19,957 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7098e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:33:19, skipping insertion in model container
[2022-12-13 20:33:19,957 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:33:19" (3/3) ...
[2022-12-13 20:33:19,958 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label16.c
[2022-12-13 20:33:19,971 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 20:33:19,971 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-13 20:33:20,098 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 20:33:20,103 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;@4020ea4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 20:33:20,104 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-13 20:33:20,127 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:33:20,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10138
[2022-12-13 20:33:20,832 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:33:20,835 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, 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[2022-12-13 20:33:20,836 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:33:20,852 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:33:20,855 INFO  L85        PathProgramCache]: Analyzing trace with hash 534917801, now seen corresponding path program 1 times
[2022-12-13 20:33:20,862 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:33:20,862 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567524329]
[2022-12-13 20:33:20,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:33:20,864 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:33:22,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:33:50,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 20:33:50,561 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:33:50,561 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567524329]
[2022-12-13 20:33:50,562 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567524329] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:33:50,562 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:33:50,563 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:33:50,564 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456695490]
[2022-12-13 20:33:50,565 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:33:50,574 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:33:50,575 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:33:50,601 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:33:50,601 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:33:50,620 INFO  L87              Difference]: Start difference. First operand  has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 0 states have call successors, (0), 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 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:34:21,533 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:34:21,533 INFO  L93              Difference]: Finished difference Result 30705 states and 61134 transitions.
[2022-12-13 20:34:21,534 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:34:21,537 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 0 states have call successors, (0), 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 10137
[2022-12-13 20:34:21,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:34:21,603 INFO  L225             Difference]: With dead ends: 30705
[2022-12-13 20:34:21,603 INFO  L226             Difference]: Without dead ends: 20384
[2022-12-13 20:34:21,619 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:34:21,622 INFO  L413           NwaCegarLoop]: 4082 mSDtfsCounter, 451 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31005 mSolverCounterSat, 12527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 43532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12527 IncrementalHoareTripleChecker+Valid, 31005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time
[2022-12-13 20:34:21,623 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 4135 Invalid, 43532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12527 Valid, 31005 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time]
[2022-12-13 20:34:21,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20384 states.
[2022-12-13 20:34:21,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 20384.
[2022-12-13 20:34:22,002 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20384 states, 20383 states have (on average 1.7945346612373057) internal successors, (36578), 20383 states have internal predecessors, (36578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:34:22,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20384 states to 20384 states and 36578 transitions.
[2022-12-13 20:34:22,034 INFO  L78                 Accepts]: Start accepts. Automaton has 20384 states and 36578 transitions. Word has length 10137
[2022-12-13 20:34:22,044 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:34:22,044 INFO  L495      AbstractCegarLoop]: Abstraction has 20384 states and 36578 transitions.
[2022-12-13 20:34:22,046 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3379.0) internal successors, (10137), 2 states have internal predecessors, (10137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:34:22,047 INFO  L276                IsEmpty]: Start isEmpty. Operand 20384 states and 36578 transitions.
[2022-12-13 20:34:22,615 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10142
[2022-12-13 20:34:22,616 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:34:22,624 INFO  L195           NwaCegarLoop]: trace histogram [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, 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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]
[2022-12-13 20:34:22,624 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 20:34:22,624 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:34:22,625 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:34:22,628 INFO  L85        PathProgramCache]: Analyzing trace with hash -538175103, now seen corresponding path program 1 times
[2022-12-13 20:34:22,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:34:22,629 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533149826]
[2022-12-13 20:34:22,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:34:22,630 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:34:23,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:34:42,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 20:34:42,533 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:34:42,533 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533149826]
[2022-12-13 20:34:42,533 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533149826] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:34:42,533 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:34:42,535 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:34:42,535 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603271300]
[2022-12-13 20:34:42,535 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:34:42,547 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:34:42,547 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:34:42,554 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:34:42,555 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:34:42,558 INFO  L87              Difference]: Start difference. First operand 20384 states and 36578 transitions. Second operand  has 3 states, 3 states have (on average 3380.3333333333335) internal successors, (10141), 2 states have internal predecessors, (10141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:35:13,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:35:13,103 INFO  L93              Difference]: Finished difference Result 61146 states and 109729 transitions.
[2022-12-13 20:35:13,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:35:13,105 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3380.3333333333335) internal successors, (10141), 2 states have internal predecessors, (10141), 0 states have call successors, (0), 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 10141
[2022-12-13 20:35:13,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:35:13,162 INFO  L225             Difference]: With dead ends: 61146
[2022-12-13 20:35:13,162 INFO  L226             Difference]: Without dead ends: 40764
[2022-12-13 20:35:13,176 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:35:13,177 INFO  L413           NwaCegarLoop]: 4828 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28700 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 40458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time
[2022-12-13 20:35:13,177 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13865 Valid, 4877 Invalid, 40458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28700 Invalid, 0 Unknown, 0 Unchecked, 30.0s Time]
[2022-12-13 20:35:13,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40764 states.
[2022-12-13 20:35:13,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 40764.
[2022-12-13 20:35:13,577 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40764 states, 40763 states have (on average 1.6070701371341658) internal successors, (65509), 40763 states have internal predecessors, (65509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:35:13,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40764 states to 40764 states and 65509 transitions.
[2022-12-13 20:35:13,624 INFO  L78                 Accepts]: Start accepts. Automaton has 40764 states and 65509 transitions. Word has length 10141
[2022-12-13 20:35:13,625 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:35:13,625 INFO  L495      AbstractCegarLoop]: Abstraction has 40764 states and 65509 transitions.
[2022-12-13 20:35:13,626 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3380.3333333333335) internal successors, (10141), 2 states have internal predecessors, (10141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:35:13,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 40764 states and 65509 transitions.
[2022-12-13 20:35:14,225 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10144
[2022-12-13 20:35:14,225 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:35:14,228 INFO  L195           NwaCegarLoop]: trace histogram [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, 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[2022-12-13 20:35:14,228 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 20:35:14,228 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:35:14,229 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:35:14,231 INFO  L85        PathProgramCache]: Analyzing trace with hash 1436382854, now seen corresponding path program 1 times
[2022-12-13 20:35:14,231 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:35:14,231 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120266829]
[2022-12-13 20:35:14,232 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:35:14,232 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:35:15,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:35:33,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 20:35:33,738 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:35:33,739 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120266829]
[2022-12-13 20:35:33,739 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120266829] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:35:33,739 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:35:33,740 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:35:33,740 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773033245]
[2022-12-13 20:35:33,740 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:35:33,749 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:35:33,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:35:33,755 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:35:33,755 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:35:33,757 INFO  L87              Difference]: Start difference. First operand 40764 states and 65509 transitions. Second operand  has 3 states, 3 states have (on average 3381.0) internal successors, (10143), 2 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:36:01,657 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:36:01,657 INFO  L93              Difference]: Finished difference Result 122286 states and 196522 transitions.
[2022-12-13 20:36:01,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:36:01,659 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3381.0) internal successors, (10143), 2 states have internal predecessors, (10143), 0 states have call successors, (0), 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 10143
[2022-12-13 20:36:01,659 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:36:01,724 INFO  L225             Difference]: With dead ends: 122286
[2022-12-13 20:36:01,724 INFO  L226             Difference]: Without dead ends: 81524
[2022-12-13 20:36:01,746 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:36:01,747 INFO  L413           NwaCegarLoop]: 4820 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28825 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 40502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time
[2022-12-13 20:36:01,748 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13685 Valid, 4869 Invalid, 40502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28825 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time]
[2022-12-13 20:36:01,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81524 states.
[2022-12-13 20:36:02,312 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81524 to 81524.
[2022-12-13 20:36:02,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81524 states, 81523 states have (on average 1.4645314819130797) internal successors, (119393), 81523 states have internal predecessors, (119393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:36:02,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81524 states to 81524 states and 119393 transitions.
[2022-12-13 20:36:02,459 INFO  L78                 Accepts]: Start accepts. Automaton has 81524 states and 119393 transitions. Word has length 10143
[2022-12-13 20:36:02,459 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:36:02,460 INFO  L495      AbstractCegarLoop]: Abstraction has 81524 states and 119393 transitions.
[2022-12-13 20:36:02,461 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3381.0) internal successors, (10143), 2 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:36:02,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 81524 states and 119393 transitions.
[2022-12-13 20:36:03,205 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10155
[2022-12-13 20:36:03,205 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:36:03,208 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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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]
[2022-12-13 20:36:03,208 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 20:36:03,208 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:36:03,209 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:36:03,211 INFO  L85        PathProgramCache]: Analyzing trace with hash 2066478445, now seen corresponding path program 1 times
[2022-12-13 20:36:03,211 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:36:03,211 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265559690]
[2022-12-13 20:36:03,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:36:03,212 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:36:04,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:36:24,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-12-13 20:36:24,787 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:36:24,787 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265559690]
[2022-12-13 20:36:24,787 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265559690] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:36:24,787 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:36:24,789 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:36:24,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275788694]
[2022-12-13 20:36:24,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:36:24,796 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:36:24,797 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:36:24,804 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:36:24,804 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:36:24,807 INFO  L87              Difference]: Start difference. First operand 81524 states and 119393 transitions. Second operand  has 3 states, 3 states have (on average 3383.0) internal successors, (10149), 2 states have internal predecessors, (10149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:36:56,511 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:36:56,511 INFO  L93              Difference]: Finished difference Result 244566 states and 358174 transitions.
[2022-12-13 20:36:56,511 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:36:56,513 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3383.0) internal successors, (10149), 2 states have internal predecessors, (10149), 0 states have call successors, (0), 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 10154
[2022-12-13 20:36:56,513 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:36:56,648 INFO  L225             Difference]: With dead ends: 244566
[2022-12-13 20:36:56,648 INFO  L226             Difference]: Without dead ends: 163044
[2022-12-13 20:36:56,688 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:36:56,689 INFO  L413           NwaCegarLoop]: 6091 mSDtfsCounter, 13473 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27528 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13473 SdHoareTripleChecker+Valid, 6140 SdHoareTripleChecker+Invalid, 40558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time
[2022-12-13 20:36:56,690 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13473 Valid, 6140 Invalid, 40558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27528 Invalid, 0 Unknown, 0 Unchecked, 30.7s Time]
[2022-12-13 20:36:56,786 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163044 states.
[2022-12-13 20:36:57,956 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163044 to 163044.
[2022-12-13 20:36:58,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163044 states, 163043 states have (on average 1.3309924375778168) internal successors, (217009), 163043 states have internal predecessors, (217009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:36:58,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163044 states to 163044 states and 217009 transitions.
[2022-12-13 20:36:58,236 INFO  L78                 Accepts]: Start accepts. Automaton has 163044 states and 217009 transitions. Word has length 10154
[2022-12-13 20:36:58,237 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:36:58,237 INFO  L495      AbstractCegarLoop]: Abstraction has 163044 states and 217009 transitions.
[2022-12-13 20:36:58,239 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3383.0) internal successors, (10149), 2 states have internal predecessors, (10149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:36:58,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 163044 states and 217009 transitions.
[2022-12-13 20:36:59,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10186
[2022-12-13 20:36:59,065 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:36:59,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2022-12-13 20:36:59,068 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-13 20:36:59,068 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:36:59,068 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:36:59,070 INFO  L85        PathProgramCache]: Analyzing trace with hash -771808273, now seen corresponding path program 1 times
[2022-12-13 20:36:59,070 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:36:59,070 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485639106]
[2022-12-13 20:36:59,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:36:59,071 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:37:00,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:37:17,969 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 20:37:17,969 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:37:17,969 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485639106]
[2022-12-13 20:37:17,970 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485639106] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:37:17,970 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:37:17,970 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:37:17,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114426841]
[2022-12-13 20:37:17,970 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:37:17,975 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:37:17,975 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:37:17,979 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:37:17,979 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:37:17,981 INFO  L87              Difference]: Start difference. First operand 163044 states and 217009 transitions. Second operand  has 3 states, 3 states have (on average 3395.0) internal successors, (10185), 2 states have internal predecessors, (10185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:37:49,738 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:37:49,739 INFO  L93              Difference]: Finished difference Result 489126 states and 651022 transitions.
[2022-12-13 20:37:49,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:37:49,740 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3395.0) internal successors, (10185), 2 states have internal predecessors, (10185), 0 states have call successors, (0), 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 10185
[2022-12-13 20:37:49,740 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:37:50,085 INFO  L225             Difference]: With dead ends: 489126
[2022-12-13 20:37:50,085 INFO  L226             Difference]: Without dead ends: 326084
[2022-12-13 20:37:50,160 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:37:50,160 INFO  L413           NwaCegarLoop]: 7312 mSDtfsCounter, 11769 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30511 mSolverCounterSat, 11081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11769 SdHoareTripleChecker+Valid, 7361 SdHoareTripleChecker+Invalid, 41592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11081 IncrementalHoareTripleChecker+Valid, 30511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time
[2022-12-13 20:37:50,161 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11769 Valid, 7361 Invalid, 41592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11081 Valid, 30511 Invalid, 0 Unknown, 0 Unchecked, 30.2s Time]
[2022-12-13 20:37:50,342 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326084 states.
[2022-12-13 20:37:52,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326084 to 326084.
[2022-12-13 20:37:52,796 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326084 states, 326083 states have (on average 1.253935347748886) internal successors, (408887), 326083 states have internal predecessors, (408887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:37:53,274 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326084 states to 326084 states and 408887 transitions.
[2022-12-13 20:37:53,274 INFO  L78                 Accepts]: Start accepts. Automaton has 326084 states and 408887 transitions. Word has length 10185
[2022-12-13 20:37:53,275 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:37:53,275 INFO  L495      AbstractCegarLoop]: Abstraction has 326084 states and 408887 transitions.
[2022-12-13 20:37:53,277 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3395.0) internal successors, (10185), 2 states have internal predecessors, (10185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:37:53,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 326084 states and 408887 transitions.
[2022-12-13 20:37:54,196 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10242
[2022-12-13 20:37:54,197 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:37:54,199 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2022-12-13 20:37:54,199 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 20:37:54,199 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:37:54,200 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:37:54,203 INFO  L85        PathProgramCache]: Analyzing trace with hash 320236873, now seen corresponding path program 1 times
[2022-12-13 20:37:54,203 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:37:54,203 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296214557]
[2022-12-13 20:37:54,205 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:37:54,205 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:37:55,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:38:12,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-12-13 20:38:12,430 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:38:12,430 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296214557]
[2022-12-13 20:38:12,430 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296214557] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:38:12,430 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:38:12,431 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:38:12,431 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763088691]
[2022-12-13 20:38:12,431 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:38:12,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:38:12,435 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:38:12,440 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:38:12,440 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:38:12,442 INFO  L87              Difference]: Start difference. First operand 326084 states and 408887 transitions. Second operand  has 3 states, 3 states have (on average 3412.6666666666665) internal successors, (10238), 2 states have internal predecessors, (10238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:38:43,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:38:43,279 INFO  L93              Difference]: Finished difference Result 978246 states and 1226656 transitions.
[2022-12-13 20:38:43,279 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:38:43,281 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3412.6666666666665) internal successors, (10238), 2 states have internal predecessors, (10238), 0 states have call successors, (0), 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 10241
[2022-12-13 20:38:43,281 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:38:44,036 INFO  L225             Difference]: With dead ends: 978246
[2022-12-13 20:38:44,037 INFO  L226             Difference]: Without dead ends: 652164
[2022-12-13 20:38:44,213 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:38:44,213 INFO  L413           NwaCegarLoop]: 5914 mSDtfsCounter, 12559 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29825 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12559 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 40859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time
[2022-12-13 20:38:44,214 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12559 Valid, 5963 Invalid, 40859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29825 Invalid, 0 Unknown, 0 Unchecked, 28.3s Time]
[2022-12-13 20:38:44,741 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2022-12-13 20:38:49,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2022-12-13 20:38:49,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1903450517738663) internal successors, (776299), 652163 states have internal predecessors, (776299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:38:50,708 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 776299 transitions.
[2022-12-13 20:38:50,708 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 776299 transitions. Word has length 10241
[2022-12-13 20:38:50,709 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:38:50,709 INFO  L495      AbstractCegarLoop]: Abstraction has 652164 states and 776299 transitions.
[2022-12-13 20:38:50,711 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3412.6666666666665) internal successors, (10238), 2 states have internal predecessors, (10238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:38:50,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 776299 transitions.
[2022-12-13 20:38:52,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10373
[2022-12-13 20:38:52,158 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:38:52,161 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2022-12-13 20:38:52,161 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 20:38:52,161 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:38:52,161 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:38:52,164 INFO  L85        PathProgramCache]: Analyzing trace with hash 935716192, now seen corresponding path program 1 times
[2022-12-13 20:38:52,164 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:38:52,164 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008903220]
[2022-12-13 20:38:52,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:38:52,165 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:38:53,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:39:18,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 20:39:18,726 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:39:18,726 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008903220]
[2022-12-13 20:39:18,726 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008903220] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:39:18,726 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:39:18,727 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:39:18,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053415108]
[2022-12-13 20:39:18,727 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:39:18,733 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:39:18,733 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:39:18,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:39:18,737 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:39:18,740 INFO  L87              Difference]: Start difference. First operand 652164 states and 776299 transitions. Second operand  has 3 states, 3 states have (on average 3457.3333333333335) internal successors, (10372), 2 states have internal predecessors, (10372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:39:47,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:39:47,328 INFO  L93              Difference]: Finished difference Result 1304326 states and 1552596 transitions.
[2022-12-13 20:39:47,328 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:39:47,329 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3457.3333333333335) internal successors, (10372), 2 states have internal predecessors, (10372), 0 states have call successors, (0), 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 10372
[2022-12-13 20:39:47,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:39:48,100 INFO  L225             Difference]: With dead ends: 1304326
[2022-12-13 20:39:48,100 INFO  L226             Difference]: Without dead ends: 652164
[2022-12-13 20:39:48,273 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:39:48,273 INFO  L413           NwaCegarLoop]: 9997 mSDtfsCounter, 10037 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29586 mSolverCounterSat, 4825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10037 SdHoareTripleChecker+Valid, 10046 SdHoareTripleChecker+Invalid, 34411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4825 IncrementalHoareTripleChecker+Valid, 29586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time
[2022-12-13 20:39:48,274 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10037 Valid, 10046 Invalid, 34411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4825 Valid, 29586 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time]
[2022-12-13 20:39:48,811 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652164 states.
[2022-12-13 20:39:53,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652164 to 652164.
[2022-12-13 20:39:53,851 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652164 states, 652163 states have (on average 1.1896090394579268) internal successors, (775819), 652163 states have internal predecessors, (775819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:39:54,888 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652164 states to 652164 states and 775819 transitions.
[2022-12-13 20:39:54,888 INFO  L78                 Accepts]: Start accepts. Automaton has 652164 states and 775819 transitions. Word has length 10372
[2022-12-13 20:39:54,888 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:39:54,889 INFO  L495      AbstractCegarLoop]: Abstraction has 652164 states and 775819 transitions.
[2022-12-13 20:39:54,890 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3457.3333333333335) internal successors, (10372), 2 states have internal predecessors, (10372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:39:54,890 INFO  L276                IsEmpty]: Start isEmpty. Operand 652164 states and 775819 transitions.
[2022-12-13 20:39:56,379 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10563
[2022-12-13 20:39:56,379 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:39:56,381 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 20:39:56,381 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-13 20:39:56,382 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:39:56,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:39:56,383 INFO  L85        PathProgramCache]: Analyzing trace with hash -1165843483, now seen corresponding path program 1 times
[2022-12-13 20:39:56,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:39:56,383 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716277037]
[2022-12-13 20:39:56,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:39:56,384 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:39:57,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:40:21,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 20:40:21,677 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:40:21,677 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716277037]
[2022-12-13 20:40:21,677 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716277037] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:40:21,677 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:40:21,678 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:40:21,678 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884295953]
[2022-12-13 20:40:21,678 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:40:21,684 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:40:21,684 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:40:21,688 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:40:21,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:40:21,690 INFO  L87              Difference]: Start difference. First operand 652164 states and 775819 transitions. Second operand  has 3 states, 3 states have (on average 3520.6666666666665) internal successors, (10562), 2 states have internal predecessors, (10562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:40:53,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:40:53,477 INFO  L93              Difference]: Finished difference Result 1630406 states and 1920908 transitions.
[2022-12-13 20:40:53,477 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:40:53,479 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3520.6666666666665) internal successors, (10562), 2 states have internal predecessors, (10562), 0 states have call successors, (0), 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 10562
[2022-12-13 20:40:53,479 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:40:54,705 INFO  L225             Difference]: With dead ends: 1630406
[2022-12-13 20:40:54,706 INFO  L226             Difference]: Without dead ends: 978244
[2022-12-13 20:40:54,962 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:40:54,963 INFO  L413           NwaCegarLoop]: 10010 mSDtfsCounter, 9820 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30736 mSolverCounterSat, 6484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9820 SdHoareTripleChecker+Valid, 10059 SdHoareTripleChecker+Invalid, 37220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6484 IncrementalHoareTripleChecker+Valid, 30736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time
[2022-12-13 20:40:54,963 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9820 Valid, 10059 Invalid, 37220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6484 Valid, 30736 Invalid, 0 Unknown, 0 Unchecked, 27.5s Time]
[2022-12-13 20:40:55,768 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 978244 states.
[2022-12-13 20:41:03,120 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 978244 to 978244.
[2022-12-13 20:41:03,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 978244 states, 978243 states have (on average 1.148870986043345) internal successors, (1123875), 978243 states have internal predecessors, (1123875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:41:04,836 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 978244 states to 978244 states and 1123875 transitions.
[2022-12-13 20:41:04,836 INFO  L78                 Accepts]: Start accepts. Automaton has 978244 states and 1123875 transitions. Word has length 10562
[2022-12-13 20:41:04,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 20:41:04,837 INFO  L495      AbstractCegarLoop]: Abstraction has 978244 states and 1123875 transitions.
[2022-12-13 20:41:04,839 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3520.6666666666665) internal successors, (10562), 2 states have internal predecessors, (10562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:41:04,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 978244 states and 1123875 transitions.
[2022-12-13 20:41:06,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10686
[2022-12-13 20:41:06,670 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 20:41:06,672 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-13 20:41:06,672 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-12-13 20:41:06,672 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-13 20:41:06,672 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 20:41:06,674 INFO  L85        PathProgramCache]: Analyzing trace with hash -302327460, now seen corresponding path program 1 times
[2022-12-13 20:41:06,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 20:41:06,674 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284577614]
[2022-12-13 20:41:06,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 20:41:06,675 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 20:41:07,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 20:41:28,642 INFO  L134       CoverageAnalysis]: Checked inductivity of 592 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2022-12-13 20:41:28,642 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 20:41:28,642 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284577614]
[2022-12-13 20:41:28,642 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284577614] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 20:41:28,642 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 20:41:28,643 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 20:41:28,643 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059456971]
[2022-12-13 20:41:28,643 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 20:41:28,647 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 20:41:28,647 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 20:41:28,651 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 20:41:28,651 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:41:28,654 INFO  L87              Difference]: Start difference. First operand 978244 states and 1123875 transitions. Second operand  has 3 states, 3 states have (on average 3546.0) internal successors, (10638), 2 states have internal predecessors, (10638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 20:42:06,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 20:42:06,016 INFO  L93              Difference]: Finished difference Result 2934726 states and 3371620 transitions.
[2022-12-13 20:42:06,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-13 20:42:06,018 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3546.0) internal successors, (10638), 2 states have internal predecessors, (10638), 0 states have call successors, (0), 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 10685
[2022-12-13 20:42:06,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 20:42:08,531 INFO  L225             Difference]: With dead ends: 2934726
[2022-12-13 20:42:08,531 INFO  L226             Difference]: Without dead ends: 1956484
[2022-12-13 20:42:09,009 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 20:42:09,010 INFO  L413           NwaCegarLoop]: 7852 mSDtfsCounter, 10108 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30970 mSolverCounterSat, 11923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10108 SdHoareTripleChecker+Valid, 7902 SdHoareTripleChecker+Invalid, 42893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11923 IncrementalHoareTripleChecker+Valid, 30970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-13 20:42:09,010 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10108 Valid, 7902 Invalid, 42893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11923 Valid, 30970 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-13 20:42:10,282 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1956484 states.
[2022-12-13 20:42:26,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956484 to 1956484.