./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD --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 8ec6e434f91e1569e6fad03794f07a751e615694ef413649174052dcc7984987
..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-29 00:03:05,157 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-29 00:03:05,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-29 00:03:05,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-29 00:03:05,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-29 00:03:05,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-29 00:03:05,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-29 00:03:05,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-29 00:03:05,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-29 00:03:05,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-29 00:03:05,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-29 00:03:05,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-29 00:03:05,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-29 00:03:05,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-29 00:03:05,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-29 00:03:05,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-29 00:03:05,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-29 00:03:05,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-29 00:03:05,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-29 00:03:05,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-29 00:03:05,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-29 00:03:05,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-29 00:03:05,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-29 00:03:05,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-29 00:03:05,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-29 00:03:05,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-29 00:03:05,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-29 00:03:05,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-29 00:03:05,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-29 00:03:05,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-29 00:03:05,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-29 00:03:05,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-29 00:03:05,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-29 00:03:05,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-29 00:03:05,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-29 00:03:05,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-29 00:03:05,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-29 00:03:05,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-29 00:03:05,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-29 00:03:05,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-29 00:03:05,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-29 00:03:05,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-29 00:03:05,410 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-29 00:03:05,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-29 00:03:05,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-29 00:03:05,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-29 00:03:05,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-29 00:03:05,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-29 00:03:05,415 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-29 00:03:05,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-29 00:03:05,416 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-29 00:03:05,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-29 00:03:05,418 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-29 00:03:05,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-29 00:03:05,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-29 00:03:05,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-29 00:03:05,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-29 00:03:05,420 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-29 00:03:05,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-29 00:03:05,420 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-29 00:03:05,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-29 00:03:05,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-29 00:03:05,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-29 00:03:05,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-29 00:03:05,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-29 00:03:05,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-29 00:03:05,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-29 00:03:05,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-29 00:03:05,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-29 00:03:05,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-29 00:03:05,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-10-29 00:03:05,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-29 00:03:05,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-29 00:03:05,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-29 00:03:05,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ec6e434f91e1569e6fad03794f07a751e615694ef413649174052dcc7984987
[2021-10-29 00:03:05,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-29 00:03:05,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-29 00:03:05,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-29 00:03:05,819 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-29 00:03:05,821 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-29 00:03:05,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c
[2021-10-29 00:03:05,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/data/34c92777a/a0aed5b51a7e44ce8da72e0ec0ed5860/FLAG44effd057
[2021-10-29 00:03:06,565 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-29 00:03:06,567 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/sv-benchmarks/c/recursive-simple/sum_25x0-1.c
[2021-10-29 00:03:06,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/data/34c92777a/a0aed5b51a7e44ce8da72e0ec0ed5860/FLAG44effd057
[2021-10-29 00:03:06,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/data/34c92777a/a0aed5b51a7e44ce8da72e0ec0ed5860
[2021-10-29 00:03:06,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-29 00:03:06,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-29 00:03:06,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-29 00:03:06,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-29 00:03:06,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-29 00:03:06,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:03:06" (1/1) ...
[2021-10-29 00:03:06,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ca4145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:06, skipping insertion in model container
[2021-10-29 00:03:06,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:03:06" (1/1) ...
[2021-10-29 00:03:06,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-29 00:03:06,975 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-29 00:03:07,209 WARN L228 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_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/sv-benchmarks/c/recursive-simple/sum_25x0-1.c[481,494]
[2021-10-29 00:03:07,213 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-29 00:03:07,230 INFO L203 MainTranslator]: Completed pre-run
[2021-10-29 00:03:07,248 WARN L228 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_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/sv-benchmarks/c/recursive-simple/sum_25x0-1.c[481,494]
[2021-10-29 00:03:07,249 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-29 00:03:07,265 INFO L208 MainTranslator]: Completed translation
[2021-10-29 00:03:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07 WrapperNode
[2021-10-29 00:03:07,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-29 00:03:07,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-29 00:03:07,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-29 00:03:07,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-29 00:03:07,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-29 00:03:07,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-29 00:03:07,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-29 00:03:07,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-29 00:03:07,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-29 00:03:07,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-29 00:03:07,329 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-29 00:03:07,329 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-29 00:03:07,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (1/1) ...
[2021-10-29 00:03:07,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-29 00:03:07,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:07,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-29 00:03:07,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-29 00:03:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-29 00:03:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-29 00:03:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure sum
[2021-10-29 00:03:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure sum
[2021-10-29 00:03:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-29 00:03:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-29 00:03:07,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-29 00:03:07,644 INFO L299 CfgBuilder]: Removed 4 assume(true) statements.
[2021-10-29 00:03:07,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:03:07 BoogieIcfgContainer
[2021-10-29 00:03:07,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-29 00:03:07,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-29 00:03:07,649 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-29 00:03:07,670 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-29 00:03:07,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:03:06" (1/3) ...
[2021-10-29 00:03:07,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a85498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:03:07, skipping insertion in model container
[2021-10-29 00:03:07,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:03:07" (2/3) ...
[2021-10-29 00:03:07,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a85498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:03:07, skipping insertion in model container
[2021-10-29 00:03:07,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:03:07" (3/3) ...
[2021-10-29 00:03:07,675 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c
[2021-10-29 00:03:07,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-29 00:03:07,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-10-29 00:03:07,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-29 00:03:07,748 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-10-29 00:03:07,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-29 00:03:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-10-29 00:03:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-29 00:03:07,775 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:07,776 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:07,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times
[2021-10-29 00:03:07,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:07,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527498139]
[2021-10-29 00:03:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:07,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-29 00:03:08,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:08,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527498139]
[2021-10-29 00:03:08,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527498139] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-29 00:03:08,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-29 00:03:08,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-29 00:03:08,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894511612]
[2021-10-29 00:03:08,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-29 00:03:08,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-29 00:03:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-29 00:03:08,174 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-29 00:03:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:08,280 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions.
[2021-10-29 00:03:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-29 00:03:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10
[2021-10-29 00:03:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:08,293 INFO L225 Difference]: With dead ends: 25
[2021-10-29 00:03:08,294 INFO L226 Difference]: Without dead ends: 15
[2021-10-29 00:03:08,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-10-29 00:03:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-10-29 00:03:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2021-10-29 00:03:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2021-10-29 00:03:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2021-10-29 00:03:08,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10
[2021-10-29 00:03:08,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:08,351 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2021-10-29 00:03:08,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-29 00:03:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2021-10-29 00:03:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-10-29 00:03:08,355 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:08,355 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:08,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-29 00:03:08,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:08,361 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times
[2021-10-29 00:03:08,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:08,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801095070]
[2021-10-29 00:03:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:08,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-29 00:03:08,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:08,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801095070]
[2021-10-29 00:03:08,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801095070] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:08,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697031962]
[2021-10-29 00:03:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:08,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:08,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:08,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:08,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-29 00:03:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:08,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-10-29 00:03:08,702 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-29 00:03:08,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697031962] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:08,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:08,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2021-10-29 00:03:08,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971058610]
[2021-10-29 00:03:08,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-10-29 00:03:08,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-29 00:03:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-10-29 00:03:08,894 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-10-29 00:03:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:08,965 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions.
[2021-10-29 00:03:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-29 00:03:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16
[2021-10-29 00:03:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:08,967 INFO L225 Difference]: With dead ends: 22
[2021-10-29 00:03:08,967 INFO L226 Difference]: Without dead ends: 18
[2021-10-29 00:03:08,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2021-10-29 00:03:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-10-29 00:03:08,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-10-29 00:03:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2021-10-29 00:03:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2021-10-29 00:03:08,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16
[2021-10-29 00:03:08,975 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:08,975 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2021-10-29 00:03:08,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-10-29 00:03:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2021-10-29 00:03:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-10-29 00:03:08,977 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:08,978 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:09,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:09,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:09,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times
[2021-10-29 00:03:09,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:09,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088448410]
[2021-10-29 00:03:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:09,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:09,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-10-29 00:03:09,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:09,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088448410]
[2021-10-29 00:03:09,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088448410] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:09,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585636996]
[2021-10-29 00:03:09,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-29 00:03:09,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:09,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:09,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:09,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-29 00:03:09,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-29 00:03:09,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:09,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-29 00:03:09,512 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-10-29 00:03:09,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585636996] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:09,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:09,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2021-10-29 00:03:09,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62226452]
[2021-10-29 00:03:09,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-29 00:03:09,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-29 00:03:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-10-29 00:03:09,702 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2021-10-29 00:03:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:09,799 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions.
[2021-10-29 00:03:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-10-29 00:03:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22
[2021-10-29 00:03:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:09,809 INFO L225 Difference]: With dead ends: 25
[2021-10-29 00:03:09,809 INFO L226 Difference]: Without dead ends: 21
[2021-10-29 00:03:09,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2021-10-29 00:03:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-10-29 00:03:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2021-10-29 00:03:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5)
[2021-10-29 00:03:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2021-10-29 00:03:09,826 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22
[2021-10-29 00:03:09,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:09,827 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2021-10-29 00:03:09,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2021-10-29 00:03:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2021-10-29 00:03:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-10-29 00:03:09,834 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:09,834 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:09,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:10,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:10,049 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times
[2021-10-29 00:03:10,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:10,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234460014]
[2021-10-29 00:03:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:10,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-10-29 00:03:10,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:10,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234460014]
[2021-10-29 00:03:10,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234460014] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:10,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993410498]
[2021-10-29 00:03:10,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-29 00:03:10,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:10,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:10,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-29 00:03:10,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-10-29 00:03:10,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-29 00:03:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-10-29 00:03:10,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993410498] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:10,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:10,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2021-10-29 00:03:10,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678587617]
[2021-10-29 00:03:10,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-10-29 00:03:10,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-29 00:03:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2021-10-29 00:03:10,580 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)
[2021-10-29 00:03:10,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:10,648 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions.
[2021-10-29 00:03:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-10-29 00:03:10,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 28
[2021-10-29 00:03:10,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:10,650 INFO L225 Difference]: With dead ends: 28
[2021-10-29 00:03:10,650 INFO L226 Difference]: Without dead ends: 24
[2021-10-29 00:03:10,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2021-10-29 00:03:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2021-10-29 00:03:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2021-10-29 00:03:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6)
[2021-10-29 00:03:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2021-10-29 00:03:10,658 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28
[2021-10-29 00:03:10,658 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:10,658 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2021-10-29 00:03:10,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)
[2021-10-29 00:03:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2021-10-29 00:03:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-10-29 00:03:10,661 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:10,661 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:10,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:10,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:10,885 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times
[2021-10-29 00:03:10,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:10,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304590813]
[2021-10-29 00:03:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:10,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-10-29 00:03:11,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:11,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304590813]
[2021-10-29 00:03:11,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304590813] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:11,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881680616]
[2021-10-29 00:03:11,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-29 00:03:11,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:11,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:11,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-29 00:03:11,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-29 00:03:11,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-10-29 00:03:11,281 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2021-10-29 00:03:11,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881680616] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:11,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:11,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2021-10-29 00:03:11,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943471576]
[2021-10-29 00:03:11,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-10-29 00:03:11,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-29 00:03:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-10-29 00:03:11,530 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9)
[2021-10-29 00:03:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:11,616 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2021-10-29 00:03:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-29 00:03:11,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 34
[2021-10-29 00:03:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:11,618 INFO L225 Difference]: With dead ends: 31
[2021-10-29 00:03:11,618 INFO L226 Difference]: Without dead ends: 27
[2021-10-29 00:03:11,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2021-10-29 00:03:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-10-29 00:03:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-10-29 00:03:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7)
[2021-10-29 00:03:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2021-10-29 00:03:11,642 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34
[2021-10-29 00:03:11,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:11,643 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2021-10-29 00:03:11,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9)
[2021-10-29 00:03:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2021-10-29 00:03:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2021-10-29 00:03:11,649 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:11,649 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:11,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:11,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:11,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times
[2021-10-29 00:03:11,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:11,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328210242]
[2021-10-29 00:03:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:11,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2021-10-29 00:03:12,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:12,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328210242]
[2021-10-29 00:03:12,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328210242] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:12,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981752604]
[2021-10-29 00:03:12,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-29 00:03:12,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:12,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:12,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:12,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-10-29 00:03:12,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-10-29 00:03:12,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-10-29 00:03:12,292 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2021-10-29 00:03:12,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981752604] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:12,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:12,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2021-10-29 00:03:12,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102390774]
[2021-10-29 00:03:12,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-10-29 00:03:12,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-29 00:03:12,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2021-10-29 00:03:12,514 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11)
[2021-10-29 00:03:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:12,616 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions.
[2021-10-29 00:03:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-29 00:03:12,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 40
[2021-10-29 00:03:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:12,618 INFO L225 Difference]: With dead ends: 34
[2021-10-29 00:03:12,619 INFO L226 Difference]: Without dead ends: 30
[2021-10-29 00:03:12,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272
[2021-10-29 00:03:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2021-10-29 00:03:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2021-10-29 00:03:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8)
[2021-10-29 00:03:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2021-10-29 00:03:12,639 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40
[2021-10-29 00:03:12,642 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:12,642 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2021-10-29 00:03:12,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11)
[2021-10-29 00:03:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2021-10-29 00:03:12,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2021-10-29 00:03:12,645 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:12,645 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:12,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:12,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:12,856 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:12,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times
[2021-10-29 00:03:12,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:12,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038201418]
[2021-10-29 00:03:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:12,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:12,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2021-10-29 00:03:13,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:13,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038201418]
[2021-10-29 00:03:13,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038201418] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:13,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927782016]
[2021-10-29 00:03:13,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-29 00:03:13,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:13,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:13,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:13,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-10-29 00:03:13,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-10-29 00:03:13,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-10-29 00:03:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2021-10-29 00:03:13,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927782016] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:13,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:13,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2021-10-29 00:03:13,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381744630]
[2021-10-29 00:03:13,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-10-29 00:03:13,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-10-29 00:03:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2021-10-29 00:03:13,518 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13)
[2021-10-29 00:03:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:13,641 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions.
[2021-10-29 00:03:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-10-29 00:03:13,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 46
[2021-10-29 00:03:13,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:13,644 INFO L225 Difference]: With dead ends: 37
[2021-10-29 00:03:13,648 INFO L226 Difference]: Without dead ends: 33
[2021-10-29 00:03:13,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342
[2021-10-29 00:03:13,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-10-29 00:03:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2021-10-29 00:03:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9)
[2021-10-29 00:03:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2021-10-29 00:03:13,665 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46
[2021-10-29 00:03:13,666 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2021-10-29 00:03:13,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13)
[2021-10-29 00:03:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2021-10-29 00:03:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2021-10-29 00:03:13,674 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:13,674 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:13,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:13,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-10-29 00:03:13,875 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times
[2021-10-29 00:03:13,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:13,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665192267]
[2021-10-29 00:03:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:13,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2021-10-29 00:03:14,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:14,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665192267]
[2021-10-29 00:03:14,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665192267] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:14,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731448945]
[2021-10-29 00:03:14,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-29 00:03:14,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:14,174 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:14,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-10-29 00:03:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-10-29 00:03:14,333 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2021-10-29 00:03:14,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731448945] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:14,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:14,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2021-10-29 00:03:14,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44531720]
[2021-10-29 00:03:14,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-10-29 00:03:14,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-10-29 00:03:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2021-10-29 00:03:14,575 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (15), 8 states have call predecessors, (15), 3 states have call successors, (15)
[2021-10-29 00:03:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:14,722 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions.
[2021-10-29 00:03:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-10-29 00:03:14,723 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (15), 8 states have call predecessors, (15), 3 states have call successors, (15) Word has length 52
[2021-10-29 00:03:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:14,727 INFO L225 Difference]: With dead ends: 40
[2021-10-29 00:03:14,727 INFO L226 Difference]: Without dead ends: 36
[2021-10-29 00:03:14,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420
[2021-10-29 00:03:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2021-10-29 00:03:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2021-10-29 00:03:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10)
[2021-10-29 00:03:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions.
[2021-10-29 00:03:14,744 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52
[2021-10-29 00:03:14,747 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:14,747 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions.
[2021-10-29 00:03:14,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (15), 8 states have call predecessors, (15), 3 states have call successors, (15)
[2021-10-29 00:03:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions.
[2021-10-29 00:03:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2021-10-29 00:03:14,755 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:14,756 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:14,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:14,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2021-10-29 00:03:14,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times
[2021-10-29 00:03:14,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:14,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391629540]
[2021-10-29 00:03:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:14,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2021-10-29 00:03:15,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:15,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391629540]
[2021-10-29 00:03:15,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391629540] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:15,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287629848]
[2021-10-29 00:03:15,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-29 00:03:15,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:15,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:15,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:15,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-10-29 00:03:15,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-29 00:03:15,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:15,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-10-29 00:03:15,439 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2021-10-29 00:03:15,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287629848] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:15,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:15,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2021-10-29 00:03:15,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130225025]
[2021-10-29 00:03:15,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-10-29 00:03:15,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-10-29 00:03:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182
[2021-10-29 00:03:15,734 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 9 states have return successors, (17), 9 states have call predecessors, (17), 3 states have call successors, (17)
[2021-10-29 00:03:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:15,882 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions.
[2021-10-29 00:03:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-10-29 00:03:15,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 9 states have return successors, (17), 9 states have call predecessors, (17), 3 states have call successors, (17) Word has length 58
[2021-10-29 00:03:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:15,884 INFO L225 Difference]: With dead ends: 43
[2021-10-29 00:03:15,885 INFO L226 Difference]: Without dead ends: 39
[2021-10-29 00:03:15,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506
[2021-10-29 00:03:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2021-10-29 00:03:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2021-10-29 00:03:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11)
[2021-10-29 00:03:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2021-10-29 00:03:15,892 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58
[2021-10-29 00:03:15,893 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:15,893 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2021-10-29 00:03:15,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 9 states have return successors, (17), 9 states have call predecessors, (17), 3 states have call successors, (17)
[2021-10-29 00:03:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2021-10-29 00:03:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2021-10-29 00:03:15,895 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:15,895 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:15,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:16,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:16,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times
[2021-10-29 00:03:16,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:16,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831443148]
[2021-10-29 00:03:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:16,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2021-10-29 00:03:16,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:16,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831443148]
[2021-10-29 00:03:16,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831443148] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:16,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121400886]
[2021-10-29 00:03:16,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-29 00:03:16,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:16,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:16,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-10-29 00:03:16,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2021-10-29 00:03:16,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-10-29 00:03:16,718 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2021-10-29 00:03:17,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121400886] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:17,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:17,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2021-10-29 00:03:17,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623701913]
[2021-10-29 00:03:17,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-10-29 00:03:17,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-10-29 00:03:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2021-10-29 00:03:17,013 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 10 states have return successors, (19), 10 states have call predecessors, (19), 3 states have call successors, (19)
[2021-10-29 00:03:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:17,176 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions.
[2021-10-29 00:03:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2021-10-29 00:03:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 10 states have return successors, (19), 10 states have call predecessors, (19), 3 states have call successors, (19) Word has length 64
[2021-10-29 00:03:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:17,182 INFO L225 Difference]: With dead ends: 46
[2021-10-29 00:03:17,182 INFO L226 Difference]: Without dead ends: 42
[2021-10-29 00:03:17,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600
[2021-10-29 00:03:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2021-10-29 00:03:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2021-10-29 00:03:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12)
[2021-10-29 00:03:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions.
[2021-10-29 00:03:17,189 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64
[2021-10-29 00:03:17,190 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:17,190 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions.
[2021-10-29 00:03:17,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 10 states have return successors, (19), 10 states have call predecessors, (19), 3 states have call successors, (19)
[2021-10-29 00:03:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions.
[2021-10-29 00:03:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2021-10-29 00:03:17,191 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:17,191 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:17,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:17,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-10-29 00:03:17,415 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:17,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times
[2021-10-29 00:03:17,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:17,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44628312]
[2021-10-29 00:03:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:17,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2021-10-29 00:03:17,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:17,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44628312]
[2021-10-29 00:03:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44628312] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:17,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831377214]
[2021-10-29 00:03:17,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-29 00:03:17,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:17,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:17,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:17,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-10-29 00:03:18,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-29 00:03:18,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-10-29 00:03:18,023 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2021-10-29 00:03:18,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831377214] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:18,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:18,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2021-10-29 00:03:18,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829639650]
[2021-10-29 00:03:18,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-10-29 00:03:18,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-10-29 00:03:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240
[2021-10-29 00:03:18,311 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (21), 11 states have call predecessors, (21), 3 states have call successors, (21)
[2021-10-29 00:03:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:18,471 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions.
[2021-10-29 00:03:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-10-29 00:03:18,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (21), 11 states have call predecessors, (21), 3 states have call successors, (21) Word has length 70
[2021-10-29 00:03:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:18,473 INFO L225 Difference]: With dead ends: 49
[2021-10-29 00:03:18,473 INFO L226 Difference]: Without dead ends: 45
[2021-10-29 00:03:18,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702
[2021-10-29 00:03:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-10-29 00:03:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2021-10-29 00:03:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13)
[2021-10-29 00:03:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2021-10-29 00:03:18,482 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70
[2021-10-29 00:03:18,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:18,482 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2021-10-29 00:03:18,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 16 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (21), 11 states have call predecessors, (21), 3 states have call successors, (21)
[2021-10-29 00:03:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2021-10-29 00:03:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2021-10-29 00:03:18,484 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:18,485 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:18,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:18,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:18,704 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times
[2021-10-29 00:03:18,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:18,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302999472]
[2021-10-29 00:03:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:18,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2021-10-29 00:03:19,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302999472]
[2021-10-29 00:03:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302999472] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229167980]
[2021-10-29 00:03:19,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-29 00:03:19,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:19,193 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:19,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2021-10-29 00:03:19,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s)
[2021-10-29 00:03:19,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:19,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-10-29 00:03:19,476 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2021-10-29 00:03:19,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229167980] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:19,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:19,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2021-10-29 00:03:19,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009194684]
[2021-10-29 00:03:19,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2021-10-29 00:03:19,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-10-29 00:03:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272
[2021-10-29 00:03:19,813 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (23), 12 states have call predecessors, (23), 3 states have call successors, (23)
[2021-10-29 00:03:20,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:20,017 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions.
[2021-10-29 00:03:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2021-10-29 00:03:20,018 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (23), 12 states have call predecessors, (23), 3 states have call successors, (23) Word has length 76
[2021-10-29 00:03:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:20,019 INFO L225 Difference]: With dead ends: 52
[2021-10-29 00:03:20,020 INFO L226 Difference]: Without dead ends: 48
[2021-10-29 00:03:20,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812
[2021-10-29 00:03:20,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-10-29 00:03:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2021-10-29 00:03:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14)
[2021-10-29 00:03:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions.
[2021-10-29 00:03:20,042 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76
[2021-10-29 00:03:20,043 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:20,043 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions.
[2021-10-29 00:03:20,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 17 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (23), 12 states have call predecessors, (23), 3 states have call successors, (23)
[2021-10-29 00:03:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions.
[2021-10-29 00:03:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2021-10-29 00:03:20,045 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:20,045 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:20,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:20,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:20,272 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 12 times
[2021-10-29 00:03:20,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:20,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074604385]
[2021-10-29 00:03:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:20,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2021-10-29 00:03:20,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:20,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074604385]
[2021-10-29 00:03:20,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074604385] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:20,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446469533]
[2021-10-29 00:03:20,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-29 00:03:20,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:20,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:20,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:20,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2021-10-29 00:03:21,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s)
[2021-10-29 00:03:21,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:21,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjunts are in the unsatisfiable core
[2021-10-29 00:03:21,083 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2021-10-29 00:03:21,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446469533] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:21,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:21,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2021-10-29 00:03:21,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51466015]
[2021-10-29 00:03:21,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-10-29 00:03:21,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-10-29 00:03:21,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306
[2021-10-29 00:03:21,502 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 13 states have return successors, (25), 13 states have call predecessors, (25), 3 states have call successors, (25)
[2021-10-29 00:03:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:21,689 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions.
[2021-10-29 00:03:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-10-29 00:03:21,690 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 13 states have return successors, (25), 13 states have call predecessors, (25), 3 states have call successors, (25) Word has length 82
[2021-10-29 00:03:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:21,691 INFO L225 Difference]: With dead ends: 55
[2021-10-29 00:03:21,691 INFO L226 Difference]: Without dead ends: 51
[2021-10-29 00:03:21,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930
[2021-10-29 00:03:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2021-10-29 00:03:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2021-10-29 00:03:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15)
[2021-10-29 00:03:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions.
[2021-10-29 00:03:21,700 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82
[2021-10-29 00:03:21,700 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:21,700 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions.
[2021-10-29 00:03:21,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 13 states have return successors, (25), 13 states have call predecessors, (25), 3 states have call successors, (25)
[2021-10-29 00:03:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions.
[2021-10-29 00:03:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2021-10-29 00:03:21,702 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:21,703 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:21,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:21,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-10-29 00:03:21,916 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 13 times
[2021-10-29 00:03:21,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:21,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804595435]
[2021-10-29 00:03:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:21,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2021-10-29 00:03:22,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:22,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804595435]
[2021-10-29 00:03:22,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804595435] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:22,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648614265]
[2021-10-29 00:03:22,476 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-29 00:03:22,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:22,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:22,478 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:22,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2021-10-29 00:03:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:22,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 30 conjunts are in the unsatisfiable core
[2021-10-29 00:03:22,785 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked.
[2021-10-29 00:03:23,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648614265] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:23,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:23,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2021-10-29 00:03:23,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522072857]
[2021-10-29 00:03:23,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-10-29 00:03:23,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-10-29 00:03:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342
[2021-10-29 00:03:23,133 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (27), 14 states have call predecessors, (27), 3 states have call successors, (27)
[2021-10-29 00:03:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:23,322 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions.
[2021-10-29 00:03:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-10-29 00:03:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (27), 14 states have call predecessors, (27), 3 states have call successors, (27) Word has length 88
[2021-10-29 00:03:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:23,326 INFO L225 Difference]: With dead ends: 58
[2021-10-29 00:03:23,326 INFO L226 Difference]: Without dead ends: 54
[2021-10-29 00:03:23,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056
[2021-10-29 00:03:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2021-10-29 00:03:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2021-10-29 00:03:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16)
[2021-10-29 00:03:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions.
[2021-10-29 00:03:23,339 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88
[2021-10-29 00:03:23,340 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:23,340 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions.
[2021-10-29 00:03:23,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (27), 14 states have call predecessors, (27), 3 states have call successors, (27)
[2021-10-29 00:03:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions.
[2021-10-29 00:03:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2021-10-29 00:03:23,344 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:23,344 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:23,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:23,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-10-29 00:03:23,568 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 14 times
[2021-10-29 00:03:23,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:23,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140752289]
[2021-10-29 00:03:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:23,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2021-10-29 00:03:24,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:24,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140752289]
[2021-10-29 00:03:24,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140752289] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:24,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506063579]
[2021-10-29 00:03:24,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-29 00:03:24,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:24,170 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:24,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2021-10-29 00:03:24,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-29 00:03:24,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:24,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core
[2021-10-29 00:03:24,578 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2021-10-29 00:03:24,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506063579] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:24,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:24,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2021-10-29 00:03:24,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932918891]
[2021-10-29 00:03:24,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-10-29 00:03:24,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-10-29 00:03:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380
[2021-10-29 00:03:25,001 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 15 states have return successors, (29), 15 states have call predecessors, (29), 3 states have call successors, (29)
[2021-10-29 00:03:25,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:25,259 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions.
[2021-10-29 00:03:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-10-29 00:03:25,260 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 15 states have return successors, (29), 15 states have call predecessors, (29), 3 states have call successors, (29) Word has length 94
[2021-10-29 00:03:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:25,261 INFO L225 Difference]: With dead ends: 61
[2021-10-29 00:03:25,261 INFO L226 Difference]: Without dead ends: 57
[2021-10-29 00:03:25,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190
[2021-10-29 00:03:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2021-10-29 00:03:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57.
[2021-10-29 00:03:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17)
[2021-10-29 00:03:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions.
[2021-10-29 00:03:25,275 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94
[2021-10-29 00:03:25,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:25,275 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions.
[2021-10-29 00:03:25,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 20 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 15 states have return successors, (29), 15 states have call predecessors, (29), 3 states have call successors, (29)
[2021-10-29 00:03:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions.
[2021-10-29 00:03:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2021-10-29 00:03:25,278 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:25,278 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:25,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:25,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2021-10-29 00:03:25,499 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 15 times
[2021-10-29 00:03:25,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:25,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509999213]
[2021-10-29 00:03:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:25,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:25,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked.
[2021-10-29 00:03:26,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:26,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509999213]
[2021-10-29 00:03:26,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509999213] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:26,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391103648]
[2021-10-29 00:03:26,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-29 00:03:26,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:26,211 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:26,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2021-10-29 00:03:26,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s)
[2021-10-29 00:03:26,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:26,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 34 conjunts are in the unsatisfiable core
[2021-10-29 00:03:26,678 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked.
[2021-10-29 00:03:27,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391103648] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:27,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:27,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2021-10-29 00:03:27,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629152633]
[2021-10-29 00:03:27,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-10-29 00:03:27,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-10-29 00:03:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420
[2021-10-29 00:03:27,083 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 16 states have return successors, (31), 16 states have call predecessors, (31), 3 states have call successors, (31)
[2021-10-29 00:03:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:27,311 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions.
[2021-10-29 00:03:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2021-10-29 00:03:27,312 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 16 states have return successors, (31), 16 states have call predecessors, (31), 3 states have call successors, (31) Word has length 100
[2021-10-29 00:03:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:27,313 INFO L225 Difference]: With dead ends: 64
[2021-10-29 00:03:27,313 INFO L226 Difference]: Without dead ends: 60
[2021-10-29 00:03:27,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332
[2021-10-29 00:03:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2021-10-29 00:03:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2021-10-29 00:03:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18)
[2021-10-29 00:03:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions.
[2021-10-29 00:03:27,325 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100
[2021-10-29 00:03:27,326 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:27,326 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions.
[2021-10-29 00:03:27,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 16 states have return successors, (31), 16 states have call predecessors, (31), 3 states have call successors, (31)
[2021-10-29 00:03:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions.
[2021-10-29 00:03:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2021-10-29 00:03:27,328 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:27,328 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:27,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:27,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2021-10-29 00:03:27,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 16 times
[2021-10-29 00:03:27,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:27,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089532414]
[2021-10-29 00:03:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:27,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2021-10-29 00:03:28,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:28,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089532414]
[2021-10-29 00:03:28,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089532414] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:28,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704094385]
[2021-10-29 00:03:28,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-29 00:03:28,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:28,264 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:28,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2021-10-29 00:03:28,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-29 00:03:28,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:28,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 36 conjunts are in the unsatisfiable core
[2021-10-29 00:03:28,826 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2021-10-29 00:03:29,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704094385] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:29,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:29,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2021-10-29 00:03:29,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688996131]
[2021-10-29 00:03:29,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-10-29 00:03:29,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-10-29 00:03:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462
[2021-10-29 00:03:29,276 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (33), 17 states have call predecessors, (33), 3 states have call successors, (33)
[2021-10-29 00:03:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:29,540 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions.
[2021-10-29 00:03:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-10-29 00:03:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (33), 17 states have call predecessors, (33), 3 states have call successors, (33) Word has length 106
[2021-10-29 00:03:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:29,542 INFO L225 Difference]: With dead ends: 67
[2021-10-29 00:03:29,542 INFO L226 Difference]: Without dead ends: 63
[2021-10-29 00:03:29,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482
[2021-10-29 00:03:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2021-10-29 00:03:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2021-10-29 00:03:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19)
[2021-10-29 00:03:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions.
[2021-10-29 00:03:29,558 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 106
[2021-10-29 00:03:29,559 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:29,562 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions.
[2021-10-29 00:03:29,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (33), 17 states have call predecessors, (33), 3 states have call successors, (33)
[2021-10-29 00:03:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions.
[2021-10-29 00:03:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2021-10-29 00:03:29,565 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:29,566 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:29,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:29,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2021-10-29 00:03:29,788 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:29,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2122437418, now seen corresponding path program 17 times
[2021-10-29 00:03:29,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:29,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276596013]
[2021-10-29 00:03:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:29,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked.
[2021-10-29 00:03:30,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:30,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276596013]
[2021-10-29 00:03:30,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276596013] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:30,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033813504]
[2021-10-29 00:03:30,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-29 00:03:30,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:30,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:30,536 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:30,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2021-10-29 00:03:31,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s)
[2021-10-29 00:03:31,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:31,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 38 conjunts are in the unsatisfiable core
[2021-10-29 00:03:31,025 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked.
[2021-10-29 00:03:31,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033813504] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:31,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:31,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23
[2021-10-29 00:03:31,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548016828]
[2021-10-29 00:03:31,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-10-29 00:03:31,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-10-29 00:03:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506
[2021-10-29 00:03:31,564 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (35), 18 states have call predecessors, (35), 3 states have call successors, (35)
[2021-10-29 00:03:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:31,798 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions.
[2021-10-29 00:03:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2021-10-29 00:03:31,799 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (35), 18 states have call predecessors, (35), 3 states have call successors, (35) Word has length 112
[2021-10-29 00:03:31,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:31,800 INFO L225 Difference]: With dead ends: 70
[2021-10-29 00:03:31,800 INFO L226 Difference]: Without dead ends: 66
[2021-10-29 00:03:31,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640
[2021-10-29 00:03:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2021-10-29 00:03:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2021-10-29 00:03:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (20), 19 states have call predecessors, (20), 2 states have call successors, (20)
[2021-10-29 00:03:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions.
[2021-10-29 00:03:31,807 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 112
[2021-10-29 00:03:31,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:31,807 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions.
[2021-10-29 00:03:31,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (35), 18 states have call predecessors, (35), 3 states have call successors, (35)
[2021-10-29 00:03:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions.
[2021-10-29 00:03:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2021-10-29 00:03:31,809 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:31,809 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:31,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:32,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2021-10-29 00:03:32,024 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash 55840780, now seen corresponding path program 18 times
[2021-10-29 00:03:32,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:32,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923979494]
[2021-10-29 00:03:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:32,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked.
[2021-10-29 00:03:32,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:32,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923979494]
[2021-10-29 00:03:32,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923979494] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:32,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976129180]
[2021-10-29 00:03:32,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-29 00:03:32,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:32,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:32,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2021-10-29 00:03:33,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s)
[2021-10-29 00:03:33,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:33,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 40 conjunts are in the unsatisfiable core
[2021-10-29 00:03:33,510 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked.
[2021-10-29 00:03:34,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976129180] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:34,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:34,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24
[2021-10-29 00:03:34,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089739241]
[2021-10-29 00:03:34,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2021-10-29 00:03:34,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-10-29 00:03:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552
[2021-10-29 00:03:34,047 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 24 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (37), 19 states have call predecessors, (37), 3 states have call successors, (37)
[2021-10-29 00:03:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:34,351 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions.
[2021-10-29 00:03:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-10-29 00:03:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 24 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (37), 19 states have call predecessors, (37), 3 states have call successors, (37) Word has length 118
[2021-10-29 00:03:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:34,353 INFO L225 Difference]: With dead ends: 73
[2021-10-29 00:03:34,353 INFO L226 Difference]: Without dead ends: 69
[2021-10-29 00:03:34,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806
[2021-10-29 00:03:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2021-10-29 00:03:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2021-10-29 00:03:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21)
[2021-10-29 00:03:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions.
[2021-10-29 00:03:34,369 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 118
[2021-10-29 00:03:34,370 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:34,370 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions.
[2021-10-29 00:03:34,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 24 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (37), 19 states have call predecessors, (37), 3 states have call successors, (37)
[2021-10-29 00:03:34,371 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions.
[2021-10-29 00:03:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2021-10-29 00:03:34,372 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:34,372 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:34,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:34,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:34,588 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:34,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash -806952938, now seen corresponding path program 19 times
[2021-10-29 00:03:34,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:34,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954535716]
[2021-10-29 00:03:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:34,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked.
[2021-10-29 00:03:35,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:35,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954535716]
[2021-10-29 00:03:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954535716] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:35,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924013627]
[2021-10-29 00:03:35,628 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-29 00:03:35,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:35,633 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:35,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2021-10-29 00:03:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:36,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 42 conjunts are in the unsatisfiable core
[2021-10-29 00:03:36,387 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked.
[2021-10-29 00:03:36,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924013627] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:36,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:36,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25
[2021-10-29 00:03:36,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805176833]
[2021-10-29 00:03:36,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2021-10-29 00:03:36,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2021-10-29 00:03:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600
[2021-10-29 00:03:36,895 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (39), 20 states have call predecessors, (39), 3 states have call successors, (39)
[2021-10-29 00:03:37,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:37,203 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions.
[2021-10-29 00:03:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2021-10-29 00:03:37,204 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (39), 20 states have call predecessors, (39), 3 states have call successors, (39) Word has length 124
[2021-10-29 00:03:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:37,205 INFO L225 Difference]: With dead ends: 76
[2021-10-29 00:03:37,205 INFO L226 Difference]: Without dead ends: 72
[2021-10-29 00:03:37,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980
[2021-10-29 00:03:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2021-10-29 00:03:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2021-10-29 00:03:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (22), 21 states have call predecessors, (22), 2 states have call successors, (22)
[2021-10-29 00:03:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions.
[2021-10-29 00:03:37,214 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 124
[2021-10-29 00:03:37,215 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:37,215 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions.
[2021-10-29 00:03:37,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (39), 20 states have call predecessors, (39), 3 states have call successors, (39)
[2021-10-29 00:03:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions.
[2021-10-29 00:03:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2021-10-29 00:03:37,217 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:37,217 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:37,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:37,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:37,436 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1807457588, now seen corresponding path program 20 times
[2021-10-29 00:03:37,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:37,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855989253]
[2021-10-29 00:03:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:37,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked.
[2021-10-29 00:03:38,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:38,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855989253]
[2021-10-29 00:03:38,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855989253] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:38,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402466602]
[2021-10-29 00:03:38,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-29 00:03:38,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:38,526 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:38,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2021-10-29 00:03:39,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-29 00:03:39,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:39,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-10-29 00:03:39,352 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked.
[2021-10-29 00:03:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402466602] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:39,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:39,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26
[2021-10-29 00:03:39,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882450960]
[2021-10-29 00:03:39,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2021-10-29 00:03:39,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2021-10-29 00:03:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650
[2021-10-29 00:03:39,793 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 26 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 21 states have return successors, (41), 21 states have call predecessors, (41), 3 states have call successors, (41)
[2021-10-29 00:03:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:40,085 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions.
[2021-10-29 00:03:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-10-29 00:03:40,086 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 21 states have return successors, (41), 21 states have call predecessors, (41), 3 states have call successors, (41) Word has length 130
[2021-10-29 00:03:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:40,087 INFO L225 Difference]: With dead ends: 79
[2021-10-29 00:03:40,087 INFO L226 Difference]: Without dead ends: 75
[2021-10-29 00:03:40,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162
[2021-10-29 00:03:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2021-10-29 00:03:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75.
[2021-10-29 00:03:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23)
[2021-10-29 00:03:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions.
[2021-10-29 00:03:40,094 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 130
[2021-10-29 00:03:40,095 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:40,095 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions.
[2021-10-29 00:03:40,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 21 states have return successors, (41), 21 states have call predecessors, (41), 3 states have call successors, (41)
[2021-10-29 00:03:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions.
[2021-10-29 00:03:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2021-10-29 00:03:40,097 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:40,097 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:40,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:40,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:40,324 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash 874439510, now seen corresponding path program 21 times
[2021-10-29 00:03:40,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:40,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480171840]
[2021-10-29 00:03:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:40,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked.
[2021-10-29 00:03:41,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:41,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480171840]
[2021-10-29 00:03:41,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480171840] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:41,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599541821]
[2021-10-29 00:03:41,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-10-29 00:03:41,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:41,336 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2021-10-29 00:03:42,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s)
[2021-10-29 00:03:42,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:42,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 46 conjunts are in the unsatisfiable core
[2021-10-29 00:03:42,264 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked.
[2021-10-29 00:03:42,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599541821] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:42,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:42,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27
[2021-10-29 00:03:42,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329534156]
[2021-10-29 00:03:42,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2021-10-29 00:03:42,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2021-10-29 00:03:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702
[2021-10-29 00:03:42,874 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (43), 22 states have call predecessors, (43), 3 states have call successors, (43)
[2021-10-29 00:03:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:43,166 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions.
[2021-10-29 00:03:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2021-10-29 00:03:43,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (43), 22 states have call predecessors, (43), 3 states have call successors, (43) Word has length 136
[2021-10-29 00:03:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:43,167 INFO L225 Difference]: With dead ends: 82
[2021-10-29 00:03:43,167 INFO L226 Difference]: Without dead ends: 78
[2021-10-29 00:03:43,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352
[2021-10-29 00:03:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2021-10-29 00:03:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78.
[2021-10-29 00:03:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (24), 23 states have call predecessors, (24), 2 states have call successors, (24)
[2021-10-29 00:03:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions.
[2021-10-29 00:03:43,175 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 136
[2021-10-29 00:03:43,176 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:43,176 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions.
[2021-10-29 00:03:43,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 27 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (43), 22 states have call predecessors, (43), 3 states have call successors, (43)
[2021-10-29 00:03:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions.
[2021-10-29 00:03:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2021-10-29 00:03:43,178 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:43,178 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:43,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:43,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2021-10-29 00:03:43,400 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash 849241484, now seen corresponding path program 22 times
[2021-10-29 00:03:43,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:43,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416154495]
[2021-10-29 00:03:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:43,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:43,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked.
[2021-10-29 00:03:44,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:44,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416154495]
[2021-10-29 00:03:44,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416154495] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:44,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313154260]
[2021-10-29 00:03:44,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-10-29 00:03:44,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:44,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:44,864 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:44,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2021-10-29 00:03:45,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-29 00:03:45,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 48 conjunts are in the unsatisfiable core
[2021-10-29 00:03:45,814 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked.
[2021-10-29 00:03:46,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313154260] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:46,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:46,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28
[2021-10-29 00:03:46,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117500840]
[2021-10-29 00:03:46,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2021-10-29 00:03:46,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:46,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2021-10-29 00:03:46,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756
[2021-10-29 00:03:46,408 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (45), 23 states have call predecessors, (45), 3 states have call successors, (45)
[2021-10-29 00:03:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:46,789 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions.
[2021-10-29 00:03:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2021-10-29 00:03:46,790 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (45), 23 states have call predecessors, (45), 3 states have call successors, (45) Word has length 142
[2021-10-29 00:03:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:46,791 INFO L225 Difference]: With dead ends: 85
[2021-10-29 00:03:46,791 INFO L226 Difference]: Without dead ends: 81
[2021-10-29 00:03:46,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550
[2021-10-29 00:03:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2021-10-29 00:03:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2021-10-29 00:03:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25)
[2021-10-29 00:03:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions.
[2021-10-29 00:03:46,799 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 142
[2021-10-29 00:03:46,800 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:46,800 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions.
[2021-10-29 00:03:46,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (45), 23 states have call predecessors, (45), 3 states have call successors, (45)
[2021-10-29 00:03:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions.
[2021-10-29 00:03:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2021-10-29 00:03:46,801 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:46,802 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:46,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:47,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2021-10-29 00:03:47,016 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1665808022, now seen corresponding path program 23 times
[2021-10-29 00:03:47,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:47,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980714600]
[2021-10-29 00:03:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:47,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked.
[2021-10-29 00:03:48,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:48,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980714600]
[2021-10-29 00:03:48,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980714600] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:48,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911628786]
[2021-10-29 00:03:48,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2021-10-29 00:03:48,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:48,430 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2021-10-29 00:03:49,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s)
[2021-10-29 00:03:49,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:49,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 50 conjunts are in the unsatisfiable core
[2021-10-29 00:03:49,411 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked.
[2021-10-29 00:03:49,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911628786] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:49,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:49,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29
[2021-10-29 00:03:49,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145147895]
[2021-10-29 00:03:49,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2021-10-29 00:03:49,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2021-10-29 00:03:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812
[2021-10-29 00:03:49,977 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 29 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 29 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (47), 24 states have call predecessors, (47), 3 states have call successors, (47)
[2021-10-29 00:03:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:50,322 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions.
[2021-10-29 00:03:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2021-10-29 00:03:50,322 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 29 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (47), 24 states have call predecessors, (47), 3 states have call successors, (47) Word has length 148
[2021-10-29 00:03:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:50,324 INFO L225 Difference]: With dead ends: 88
[2021-10-29 00:03:50,324 INFO L226 Difference]: Without dead ends: 84
[2021-10-29 00:03:50,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756
[2021-10-29 00:03:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2021-10-29 00:03:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2021-10-29 00:03:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 57 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26)
[2021-10-29 00:03:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions.
[2021-10-29 00:03:50,335 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 148
[2021-10-29 00:03:50,336 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:50,336 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions.
[2021-10-29 00:03:50,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 29 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (47), 24 states have call predecessors, (47), 3 states have call successors, (47)
[2021-10-29 00:03:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions.
[2021-10-29 00:03:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2021-10-29 00:03:50,338 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:50,338 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:50,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2021-10-29 00:03:50,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:50,544 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1715345484, now seen corresponding path program 24 times
[2021-10-29 00:03:50,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:50,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006429263]
[2021-10-29 00:03:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:50,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked.
[2021-10-29 00:03:51,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:51,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006429263]
[2021-10-29 00:03:51,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006429263] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:51,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883825462]
[2021-10-29 00:03:51,958 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2021-10-29 00:03:51,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:51,960 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:51,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2021-10-29 00:03:53,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s)
[2021-10-29 00:03:53,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-29 00:03:53,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 52 conjunts are in the unsatisfiable core
[2021-10-29 00:03:53,077 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:03:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked.
[2021-10-29 00:03:53,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883825462] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:53,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:03:53,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30
[2021-10-29 00:03:53,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675044544]
[2021-10-29 00:03:53,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2021-10-29 00:03:53,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:03:53,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2021-10-29 00:03:53,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870
[2021-10-29 00:03:53,640 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 30 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (49), 25 states have call predecessors, (49), 3 states have call successors, (49)
[2021-10-29 00:03:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:03:54,010 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions.
[2021-10-29 00:03:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2021-10-29 00:03:54,010 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (49), 25 states have call predecessors, (49), 3 states have call successors, (49) Word has length 154
[2021-10-29 00:03:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:03:54,011 INFO L225 Difference]: With dead ends: 91
[2021-10-29 00:03:54,011 INFO L226 Difference]: Without dead ends: 87
[2021-10-29 00:03:54,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970
[2021-10-29 00:03:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2021-10-29 00:03:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87.
[2021-10-29 00:03:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27)
[2021-10-29 00:03:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions.
[2021-10-29 00:03:54,019 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 154
[2021-10-29 00:03:54,019 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:03:54,019 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions.
[2021-10-29 00:03:54,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (49), 25 states have call predecessors, (49), 3 states have call successors, (49)
[2021-10-29 00:03:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions.
[2021-10-29 00:03:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2021-10-29 00:03:54,022 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-29 00:03:54,022 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-29 00:03:54,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2021-10-29 00:03:54,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:54,235 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-10-29 00:03:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-29 00:03:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash -678635050, now seen corresponding path program 25 times
[2021-10-29 00:03:54,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-29 00:03:54,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798503044]
[2021-10-29 00:03:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-29 00:03:54,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-29 00:03:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-10-29 00:03:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 924 proven. 50 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked.
[2021-10-29 00:03:58,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-29 00:03:58,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798503044]
[2021-10-29 00:03:58,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798503044] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:03:58,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232245048]
[2021-10-29 00:03:58,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2021-10-29 00:03:58,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-29 00:03:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-29 00:03:58,250 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-29 00:03:58,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2021-10-29 00:03:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-29 00:03:59,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 217 conjunts are in the unsatisfiable core
[2021-10-29 00:03:59,141 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-29 00:04:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 49 proven. 950 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked.
[2021-10-29 00:04:04,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232245048] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-29 00:04:04,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-29 00:04:04,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59] total 114
[2021-10-29 00:04:04,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142964750]
[2021-10-29 00:04:04,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states
[2021-10-29 00:04:04,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-29 00:04:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2021-10-29 00:04:04,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=12047, Unknown=0, NotChecked=0, Total=12882
[2021-10-29 00:04:04,393 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 114 states, 110 states have (on average 1.0727272727272728) internal successors, (118), 62 states have internal predecessors, (118), 6 states have call successors, (6), 1 states have call predecessors, (6), 51 states have return successors, (52), 52 states have call predecessors, (52), 6 states have call successors, (52)
[2021-10-29 00:04:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-29 00:04:10,973 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions.
[2021-10-29 00:04:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2021-10-29 00:04:10,974 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 110 states have (on average 1.0727272727272728) internal successors, (118), 62 states have internal predecessors, (118), 6 states have call successors, (6), 1 states have call predecessors, (6), 51 states have return successors, (52), 52 states have call predecessors, (52), 6 states have call successors, (52) Word has length 160
[2021-10-29 00:04:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-29 00:04:10,975 INFO L225 Difference]: With dead ends: 90
[2021-10-29 00:04:10,975 INFO L226 Difference]: Without dead ends: 0
[2021-10-29 00:04:10,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5333 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1975, Invalid=26755, Unknown=0, NotChecked=0, Total=28730
[2021-10-29 00:04:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-10-29 00:04:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-10-29 00:04:10,988 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)
[2021-10-29 00:04:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-10-29 00:04:10,988 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160
[2021-10-29 00:04:10,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-29 00:04:10,988 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-10-29 00:04:10,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 110 states have (on average 1.0727272727272728) internal successors, (118), 62 states have internal predecessors, (118), 6 states have call successors, (6), 1 states have call predecessors, (6), 51 states have return successors, (52), 52 states have call predecessors, (52), 6 states have call successors, (52)
[2021-10-29 00:04:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-10-29 00:04:10,989 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-10-29 00:04:10,992 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-29 00:04:11,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2021-10-29 00:04:11,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2021-10-29 00:04:11,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-10-29 00:04:11,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-29 00:04:11,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-29 00:04:11,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-29 00:04:11,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-29 00:04:11,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed.
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed.
[2021-10-29 00:04:11,241 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed.
[2021-10-29 00:04:11,242 INFO L853 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 25) (= ULTIMATE.start_main_~b~0 0))
[2021-10-29 00:04:11,242 INFO L857 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed.
[2021-10-29 00:04:11,242 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 20) no Hoare annotation was computed.
[2021-10-29 00:04:11,242 INFO L857 garLoopResultBuilder]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed.
[2021-10-29 00:04:11,242 INFO L853 garLoopResultBuilder]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= 1 sum_~n))
[2021-10-29 00:04:11,242 INFO L857 garLoopResultBuilder]: For program point L9-1(line 9) no Hoare annotation was computed.
[2021-10-29 00:04:11,243 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 10) no Hoare annotation was computed.
[2021-10-29 00:04:11,243 INFO L857 garLoopResultBuilder]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed.
[2021-10-29 00:04:11,243 INFO L860 garLoopResultBuilder]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true
[2021-10-29 00:04:11,247 INFO L731 BasicCegarLoop]: Path program histogram: [25, 1]
[2021-10-29 00:04:11,249 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-10-29 00:04:11,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:04:11 BoogieIcfgContainer
[2021-10-29 00:04:11,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-29 00:04:11,253 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-29 00:04:11,254 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-29 00:04:11,254 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-29 00:04:11,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:03:07" (3/4) ...
[2021-10-29 00:04:11,258 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-10-29 00:04:11,267 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum
[2021-10-29 00:04:11,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges
[2021-10-29 00:04:11,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-10-29 00:04:11,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-29 00:04:11,273 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-29 00:04:11,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-29 00:04:11,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-29 00:04:11,309 INFO L168 Benchmark]: Toolchain (without parser) took 64384.38 ms. Allocated memory was 123.7 MB in the beginning and 423.6 MB in the end (delta: 299.9 MB). Free memory was 82.2 MB in the beginning and 206.9 MB in the end (delta: -124.7 MB). Peak memory consumption was 175.9 MB. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,310 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 98.1 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.22 ms. Allocated memory is still 123.7 MB. Free memory was 82.0 MB in the beginning and 98.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.62 ms. Allocated memory is still 123.7 MB. Free memory was 98.7 MB in the beginning and 97.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,311 INFO L168 Benchmark]: Boogie Preprocessor took 21.14 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 96.5 MB in the end (delta: 824.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,312 INFO L168 Benchmark]: RCFGBuilder took 317.47 ms. Allocated memory is still 123.7 MB. Free memory was 96.5 MB in the beginning and 87.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,312 INFO L168 Benchmark]: TraceAbstraction took 63604.50 ms. Allocated memory was 123.7 MB in the beginning and 423.6 MB in the end (delta: 299.9 MB). Free memory was 86.6 MB in the beginning and 209.0 MB in the end (delta: -122.4 MB). Peak memory consumption was 178.2 MB. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,313 INFO L168 Benchmark]: Witness Printer took 54.36 ms. Allocated memory is still 423.6 MB. Free memory was 209.0 MB in the beginning and 206.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
[2021-10-29 00:04:11,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.35 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 98.1 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 326.22 ms. Allocated memory is still 123.7 MB. Free memory was 82.0 MB in the beginning and 98.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 38.62 ms. Allocated memory is still 123.7 MB. Free memory was 98.7 MB in the beginning and 97.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 21.14 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 96.5 MB in the end (delta: 824.5 kB). There was no memory consumed. Max. memory is 16.1 GB.
* RCFGBuilder took 317.47 ms. Allocated memory is still 123.7 MB. Free memory was 96.5 MB in the beginning and 87.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 63604.50 ms. Allocated memory was 123.7 MB in the beginning and 423.6 MB in the end (delta: 299.9 MB). Free memory was 86.6 MB in the beginning and 209.0 MB in the end (delta: -122.4 MB). Peak memory consumption was 178.2 MB. Max. memory is 16.1 GB.
* Witness Printer took 54.36 ms. Allocated memory is still 423.6 MB. Free memory was 209.0 MB in the beginning and 206.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
* 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: 18]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.5s, OverallIterations: 26, TraceHistogramMax: 26, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 258 SDtfs, 1082 SDslu, 2974 SDs, 0 SdLazy, 4811 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3715 GetRequests, 2823 SyntacticMatches, 0 SemanticMatches, 892 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10533 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=25, InterpolantAutomatonStates: 485, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 18 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 33.1s InterpolantComputationTime, 4410 NumberOfCodeBlocks, 4410 NumberOfCodeBlocksAsserted, 223 NumberOfCheckSat, 4359 ConstructedInterpolants, 0 QuantifiedInterpolants, 12753 SizeOfPredicates, 355 NumberOfNonLiveVariables, 7275 ConjunctsInSsa, 913 ConjunctsInUnsatCore, 51 InterpolantComputations, 1 PerfectInterpolantSequences, 17800/33800 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
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2021-10-29 00:04:11,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f11ed5ef-d3a2-407f-9e52-5f940f1ddd5a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...