./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/float-benchs/feedback_diverge.c --full-output --architecture 32bit


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


Checking for overflows
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/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_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/feedback_diverge.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6e296367f1fe3cf145b6868ec70c2d770b2281a31a9d7dcae84843c6ed48125
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-13 21:17:25,226 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-13 21:17:25,228 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 21:17:25,245 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 21:17:25,246 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 21:17:25,247 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 21:17:25,248 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 21:17:25,249 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 21:17:25,251 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 21:17:25,251 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 21:17:25,252 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 21:17:25,253 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 21:17:25,254 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 21:17:25,255 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 21:17:25,256 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 21:17:25,257 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 21:17:25,257 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 21:17:25,258 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 21:17:25,259 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 21:17:25,260 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 21:17:25,261 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 21:17:25,262 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 21:17:25,263 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 21:17:25,264 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 21:17:25,267 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 21:17:25,267 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 21:17:25,268 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 21:17:25,268 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 21:17:25,269 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 21:17:25,270 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 21:17:25,270 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 21:17:25,271 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 21:17:25,271 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 21:17:25,272 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 21:17:25,273 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 21:17:25,273 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 21:17:25,274 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 21:17:25,274 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 21:17:25,274 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 21:17:25,275 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 21:17:25,275 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 21:17:25,276 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf
[2022-12-13 21:17:25,296 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-13 21:17:25,296 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 21:17:25,296 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 21:17:25,297 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 21:17:25,297 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 21:17:25,303 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 21:17:25,304 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 21:17:25,304 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-12-13 21:17:25,304 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-12-13 21:17:25,304 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 21:17:25,305 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-13 21:17:25,305 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2022-12-13 21:17:25,305 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-13 21:17:25,305 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-13 21:17:25,305 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-13 21:17:25,306 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-13 21:17:25,306 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 21:17:25,306 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-13 21:17:25,306 INFO  L138        SettingsManager]:  * Check absence of signed integer overflows=true
[2022-12-13 21:17:25,306 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-13 21:17:25,306 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-13 21:17:25,307 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-13 21:17:25,307 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-13 21:17:25,307 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 21:17:25,307 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-12-13 21:17:25,307 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-13 21:17:25,308 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 21:17:25,308 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 21:17:25,308 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 21:17:25,308 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-13 21:17:25,309 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-12-13 21:17:25,309 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 21:17:25,309 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 21:17:25,309 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-13 21:17:25,309 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 21:17:25,309 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 21:17:25,310 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 21:17:25,310 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_86354cdf-b442-499d-b547-2d21833bcfd4/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_86354cdf-b442-499d-b547-2d21833bcfd4/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 ! overflow) )


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 -> a6e296367f1fe3cf145b6868ec70c2d770b2281a31a9d7dcae84843c6ed48125
[2022-12-13 21:17:25,487 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 21:17:25,505 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 21:17:25,507 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 21:17:25,508 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-13 21:17:25,508 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-13 21:17:25,509 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/float-benchs/feedback_diverge.c
[2022-12-13 21:17:28,069 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-13 21:17:28,235 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-13 21:17:28,235 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/sv-benchmarks/c/float-benchs/feedback_diverge.c
[2022-12-13 21:17:28,241 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/data/761e319df/078fb9371fbb4fc088243209b049ef65/FLAG455a97665
[2022-12-13 21:17:28,647 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/data/761e319df/078fb9371fbb4fc088243209b049ef65
[2022-12-13 21:17:28,650 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 21:17:28,651 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 21:17:28,653 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 21:17:28,653 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 21:17:28,657 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 21:17:28,657 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,658 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772c0f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28, skipping insertion in model container
[2022-12-13 21:17:28,659 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,666 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-13 21:17:28,680 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-13 21:17:28,803 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_86354cdf-b442-499d-b547-2d21833bcfd4/sv-benchmarks/c/float-benchs/feedback_diverge.c[626,639]
[2022-12-13 21:17:28,816 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 21:17:28,824 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-13 21:17:28,835 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_86354cdf-b442-499d-b547-2d21833bcfd4/sv-benchmarks/c/float-benchs/feedback_diverge.c[626,639]
[2022-12-13 21:17:28,839 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-13 21:17:28,851 INFO  L208         MainTranslator]: Completed translation
[2022-12-13 21:17:28,851 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28 WrapperNode
[2022-12-13 21:17:28,851 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 21:17:28,852 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 21:17:28,852 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 21:17:28,852 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 21:17:28,859 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,865 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,882 INFO  L138                Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 49
[2022-12-13 21:17:28,882 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 21:17:28,883 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 21:17:28,883 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 21:17:28,883 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 21:17:28,890 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,890 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,892 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,892 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,896 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,899 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,900 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,901 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,902 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 21:17:28,903 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 21:17:28,903 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 21:17:28,904 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-13 21:17:28,905 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (1/1) ...
[2022-12-13 21:17:28,910 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 21:17:28,917 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 21:17:28,926 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 21:17:28,928 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 21:17:28,958 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 21:17:28,958 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 21:17:28,958 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 21:17:28,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 21:17:29,012 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-13 21:17:29,014 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 21:17:29,095 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-13 21:17:29,100 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 21:17:29,100 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-13 21:17:29,101 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:17:29 BoogieIcfgContainer
[2022-12-13 21:17:29,102 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 21:17:29,103 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 21:17:29,103 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 21:17:29,106 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-13 21:17:29,106 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:17:28" (1/3) ...
[2022-12-13 21:17:29,106 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57189b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:17:29, skipping insertion in model container
[2022-12-13 21:17:29,106 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:17:28" (2/3) ...
[2022-12-13 21:17:29,107 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57189b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:17:29, skipping insertion in model container
[2022-12-13 21:17:29,107 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:17:29" (3/3) ...
[2022-12-13 21:17:29,108 INFO  L112   eAbstractionObserver]: Analyzing ICFG feedback_diverge.c
[2022-12-13 21:17:29,122 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 21:17:29,122 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-12-13 21:17:29,159 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 21:17:29,164 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;@6388347c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 21:17:29,164 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-12-13 21:17:29,167 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,172 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-12-13 21:17:29,172 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:17:29,172 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 21:17:29,173 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2022-12-13 21:17:29,177 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:17:29,177 INFO  L85        PathProgramCache]: Analyzing trace with hash 274902738, now seen corresponding path program 1 times
[2022-12-13 21:17:29,183 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:17:29,184 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272236402]
[2022-12-13 21:17:29,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:17:29,184 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:17:29,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:17:29,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:17:29,339 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:17:29,339 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272236402]
[2022-12-13 21:17:29,340 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272236402] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:17:29,340 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:17:29,340 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:17:29,342 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615118916]
[2022-12-13 21:17:29,342 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:17:29,346 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 21:17:29,346 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:17:29,368 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 21:17:29,368 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:17:29,370 INFO  L87              Difference]: Start difference. First operand  has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,416 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:17:29,416 INFO  L93              Difference]: Finished difference Result 47 states and 61 transitions.
[2022-12-13 21:17:29,417 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 21:17:29,418 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8
[2022-12-13 21:17:29,419 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:17:29,424 INFO  L225             Difference]: With dead ends: 47
[2022-12-13 21:17:29,424 INFO  L226             Difference]: Without dead ends: 22
[2022-12-13 21:17:29,426 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 21:17:29,429 INFO  L413           NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:17:29,430 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 21:17:29,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-12-13 21:17:29,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-12-13 21:17:29,452 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,453 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2022-12-13 21:17:29,454 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8
[2022-12-13 21:17:29,454 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:17:29,454 INFO  L495      AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2022-12-13 21:17:29,454 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,454 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2022-12-13 21:17:29,455 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-12-13 21:17:29,455 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:17:29,455 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1]
[2022-12-13 21:17:29,455 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 21:17:29,455 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2022-12-13 21:17:29,456 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:17:29,456 INFO  L85        PathProgramCache]: Analyzing trace with hash 2005843772, now seen corresponding path program 1 times
[2022-12-13 21:17:29,456 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:17:29,456 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681981401]
[2022-12-13 21:17:29,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:17:29,457 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:17:29,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:17:29,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:17:29,555 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:17:29,555 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681981401]
[2022-12-13 21:17:29,555 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681981401] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 21:17:29,556 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446119415]
[2022-12-13 21:17:29,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:17:29,556 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 21:17:29,556 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 21:17:29,557 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 21:17:29,558 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-12-13 21:17:29,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:17:29,602 INFO  L263         TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-12-13 21:17:29,607 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 21:17:29,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 21:17:29,676 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 21:17:29,676 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [446119415] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:17:29,676 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 21:17:29,676 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2022-12-13 21:17:29,677 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662637732]
[2022-12-13 21:17:29,677 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:17:29,678 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-12-13 21:17:29,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:17:29,679 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-12-13 21:17:29,679 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-12-13 21:17:29,679 INFO  L87              Difference]: Start difference. First operand 22 states and 24 transitions. Second operand  has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:17:29,718 INFO  L93              Difference]: Finished difference Result 22 states and 24 transitions.
[2022-12-13 21:17:29,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-12-13 21:17:29,718 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15
[2022-12-13 21:17:29,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:17:29,719 INFO  L225             Difference]: With dead ends: 22
[2022-12-13 21:17:29,719 INFO  L226             Difference]: Without dead ends: 21
[2022-12-13 21:17:29,719 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-12-13 21:17:29,721 INFO  L413           NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:17:29,721 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 21:17:29,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2022-12-13 21:17:29,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2022-12-13 21:17:29,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,725 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions.
[2022-12-13 21:17:29,725 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15
[2022-12-13 21:17:29,725 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:17:29,725 INFO  L495      AbstractCegarLoop]: Abstraction has 21 states and 23 transitions.
[2022-12-13 21:17:29,726 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:29,726 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions.
[2022-12-13 21:17:29,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-12-13 21:17:29,726 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-13 21:17:29,726 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1]
[2022-12-13 21:17:29,732 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-12-13 21:17:29,927 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 21:17:29,929 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2022-12-13 21:17:29,931 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 21:17:29,931 INFO  L85        PathProgramCache]: Analyzing trace with hash 2051614850, now seen corresponding path program 1 times
[2022-12-13 21:17:29,932 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 21:17:29,932 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531326431]
[2022-12-13 21:17:29,933 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 21:17:29,933 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 21:17:29,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 21:17:30,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-12-13 21:17:30,093 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 21:17:30,093 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531326431]
[2022-12-13 21:17:30,093 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531326431] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 21:17:30,093 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 21:17:30,094 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 21:17:30,094 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8753853]
[2022-12-13 21:17:30,094 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 21:17:30,094 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 21:17:30,095 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 21:17:30,095 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 21:17:30,095 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-13 21:17:30,096 INFO  L87              Difference]: Start difference. First operand 21 states and 23 transitions. Second operand  has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:30,111 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 21:17:30,112 INFO  L93              Difference]: Finished difference Result 21 states and 23 transitions.
[2022-12-13 21:17:30,112 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-12-13 21:17:30,112 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16
[2022-12-13 21:17:30,112 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 21:17:30,112 INFO  L225             Difference]: With dead ends: 21
[2022-12-13 21:17:30,112 INFO  L226             Difference]: Without dead ends: 0
[2022-12-13 21:17:30,113 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 21:17:30,114 INFO  L413           NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 21:17:30,114 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 21:17:30,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-12-13 21:17:30,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-12-13 21:17:30,115 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:30,116 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-12-13 21:17:30,116 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16
[2022-12-13 21:17:30,116 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-13 21:17:30,116 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-12-13 21:17:30,116 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-13 21:17:30,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-12-13 21:17:30,116 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2022-12-13 21:17:30,118 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2022-12-13 21:17:30,119 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2022-12-13 21:17:30,119 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 21:17:30,121 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-12-13 21:17:30,133 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed.
[2022-12-13 21:17:30,133 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2022-12-13 21:17:30,133 INFO  L899   garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed.
[2022-12-13 21:17:30,133 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L902   garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 43) the Hoare annotation is: true
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point L28-2(lines 28 34) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point L26-2(lines 26 39) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point L26-3(line 26) no Hoare annotation was computed.
[2022-12-13 21:17:30,134 INFO  L899   garLoopResultBuilder]: For program point L26-4(line 26) no Hoare annotation was computed.
[2022-12-13 21:17:30,135 INFO  L895   garLoopResultBuilder]: At program point L26-5(lines 26 39) the Hoare annotation is: (or (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_main_~i~0#1|))
[2022-12-13 21:17:30,135 INFO  L899   garLoopResultBuilder]: For program point L26-6(lines 26 39) no Hoare annotation was computed.
[2022-12-13 21:17:30,135 INFO  L899   garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed.
[2022-12-13 21:17:30,135 INFO  L899   garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed.
[2022-12-13 21:17:30,135 INFO  L899   garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed.
[2022-12-13 21:17:30,135 INFO  L899   garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed.
[2022-12-13 21:17:30,135 INFO  L902   garLoopResultBuilder]: At program point L14-3(line 14) the Hoare annotation is: true
[2022-12-13 21:17:30,138 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-12-13 21:17:30,140 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2022-12-13 21:17:30,151 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:17:30 BoogieIcfgContainer
[2022-12-13 21:17:30,151 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-12-13 21:17:30,152 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2022-12-13 21:17:30,152 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2022-12-13 21:17:30,152 INFO  L275        PluginConnector]: Witness Printer initialized
[2022-12-13 21:17:30,152 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:17:29" (3/4) ...
[2022-12-13 21:17:30,154 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2022-12-13 21:17:30,161 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges
[2022-12-13 21:17:30,161 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2022-12-13 21:17:30,161 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2022-12-13 21:17:30,161 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2022-12-13 21:17:30,182 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/witness.graphml
[2022-12-13 21:17:30,183 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-12-13 21:17:30,183 INFO  L158              Benchmark]: Toolchain (without parser) took 1531.75ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 81.5MB in the end (delta: 19.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB.
[2022-12-13 21:17:30,183 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-12-13 21:17:30,183 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 198.46ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 90.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2022-12-13 21:17:30,184 INFO  L158              Benchmark]: Boogie Procedure Inliner took 29.83ms. Allocated memory is still 134.2MB. Free memory was 90.2MB in the beginning and 88.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-12-13 21:17:30,184 INFO  L158              Benchmark]: Boogie Preprocessor took 19.95ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 87.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-12-13 21:17:30,184 INFO  L158              Benchmark]: RCFGBuilder took 198.34ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 78.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2022-12-13 21:17:30,184 INFO  L158              Benchmark]: TraceAbstraction took 1048.14ms. Allocated memory is still 134.2MB. Free memory was 77.2MB in the beginning and 84.4MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-12-13 21:17:30,185 INFO  L158              Benchmark]: Witness Printer took 31.02ms. Allocated memory is still 134.2MB. Free memory was 84.3MB in the beginning and 81.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2022-12-13 21:17:30,186 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 198.46ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 90.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 29.83ms. Allocated memory is still 134.2MB. Free memory was 90.2MB in the beginning and 88.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 19.95ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 87.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 198.34ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 78.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1048.14ms. Allocated memory is still 134.2MB. Free memory was 77.2MB in the beginning and 84.4MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB.
 * Witness Printer took 31.02ms. Allocated memory is still 134.2MB. Free memory was 84.3MB in the beginning and 81.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 26]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 26]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 39 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 2 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 13/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    2 specifications checked. All of them hold
  - InvariantResult [Line: 18]: Loop Invariant
    Derived loop invariant: 1
  - InvariantResult [Line: 26]: Loop Invariant
    Derived loop invariant: i == 0 || 1 <= i
  - InvariantResult [Line: 14]: Loop Invariant
    Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2022-12-13 21:17:30,198 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86354cdf-b442-499d-b547-2d21833bcfd4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE