./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y --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 64bit --witnessprinter.graph.data.programhash f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:32:18,781 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:32:18,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:32:18,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:32:18,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:32:18,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:32:18,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:32:18,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:32:18,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:32:18,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:32:18,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:32:18,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:32:18,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:32:18,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:32:18,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:32:18,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:32:18,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:32:18,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:32:18,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:32:18,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:32:18,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:32:18,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:32:18,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:32:18,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:32:18,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:32:18,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:32:18,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:32:18,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:32:18,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:32:18,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:32:18,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:32:18,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:32:18,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:32:18,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:32:18,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:32:18,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:32:18,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:32:18,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:32:18,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:32:18,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:32:18,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:32:18,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf
[2021-11-13 17:32:18,972 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:32:18,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:32:18,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:32:18,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:32:18,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:32:18,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:32:18,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:32:18,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:32:18,976 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:32:18,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:32:18,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:32:18,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:32:18,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:32:18,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:32:18,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:32:18,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:32:18,978 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:32:18,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:32:18,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:32:18,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:32:18,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:32:18,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:32:18,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:32:18,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:32:18,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:32:18,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:32:18,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:32:18,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:32:18,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:32:18,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:32:18,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:32:18,982 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_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91
[2021-11-13 17:32:19,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:32:19,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:32:19,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:32:19,345 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:32:19,346 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:32:19,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i
[2021-11-13 17:32:19,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/data/7570df081/2fe4be9d6a004e41b8faa0782e3e1106/FLAG62ae281d6
[2021-11-13 17:32:20,446 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:32:20,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i
[2021-11-13 17:32:20,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/data/7570df081/2fe4be9d6a004e41b8faa0782e3e1106/FLAG62ae281d6
[2021-11-13 17:32:20,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/data/7570df081/2fe4be9d6a004e41b8faa0782e3e1106
[2021-11-13 17:32:20,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:32:20,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:32:20,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:32:20,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:32:20,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:32:20,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:20" (1/1) ...
[2021-11-13 17:32:20,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3af471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:20, skipping insertion in model container
[2021-11-13 17:32:20,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:20" (1/1) ...
[2021-11-13 17:32:20,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:32:20,951 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:32:21,494 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602]
[2021-11-13 17:32:21,495 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * ,
size_t ) [3603-3604]
[2021-11-13 17:32:21,758 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_6117fd8e-1804-4f49-9f23-fefb636040ad/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158]
[2021-11-13 17:32:22,674 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:32:23,143 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:32:23,244 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602]
[2021-11-13 17:32:23,246 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * ,
size_t ) [3603-3604]
[2021-11-13 17:32:23,258 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_6117fd8e-1804-4f49-9f23-fefb636040ad/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158]
[2021-11-13 17:32:23,510 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:32:23,626 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:32:23,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23 WrapperNode
[2021-11-13 17:32:23,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:32:23,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:32:23,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:32:23,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:32:23,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:23,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:23,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:32:23,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:32:23,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:32:23,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:32:23,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:23,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:23,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:23,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:24,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:24,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:24,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:24,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:32:24,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:32:24,214 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:32:24,214 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:32:24,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (1/1) ...
[2021-11-13 17:32:24,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:32:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:32:24,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:32:24,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:32:24,304 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_start
[2021-11-13 17:32:24,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_start
[2021-11-13 17:32:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_set_termios
[2021-11-13 17:32:24,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_set_termios
[2021-11-13 17:32:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure msleep
[2021-11-13 17:32:24,305 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep
[2021-11-13 17:32:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$
[2021-11-13 17:32:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2021-11-13 17:32:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop
[2021-11-13 17:32:24,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop
[2021-11-13 17:32:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put
[2021-11-13 17:32:24,306 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put
[2021-11-13 17:32:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock
[2021-11-13 17:32:24,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock
[2021-11-13 17:32:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmset
[2021-11-13 17:32:24,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmset
[2021-11-13 17:32:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3
[2021-11-13 17:32:24,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3
[2021-11-13 17:32:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc
[2021-11-13 17:32:24,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2021-11-13 17:32:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region
[2021-11-13 17:32:24,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region
[2021-11-13 17:32:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr
[2021-11-13 17:32:24,308 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr
[2021-11-13 17:32:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure raise_dtr
[2021-11-13 17:32:24,309 INFO L138 BoogieDeclarations]: Found implementation of procedure raise_dtr
[2021-11-13 17:32:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push
[2021-11-13 17:32:24,309 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push
[2021-11-13 17:32:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_chars_in_buffer
[2021-11-13 17:32:24,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_chars_in_buffer
[2021-11-13 17:32:24,309 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char
[2021-11-13 17:32:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char
[2021-11-13 17:32:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq
[2021-11-13 17:32:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq
[2021-11-13 17:32:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_buffer
[2021-11-13 17:32:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_buffer
[2021-11-13 17:32:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock
[2021-11-13 17:32:24,311 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock
[2021-11-13 17:32:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error
[2021-11-13 17:32:24,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error
[2021-11-13 17:32:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure outsw
[2021-11-13 17:32:24,312 INFO L138 BoogieDeclarations]: Found implementation of procedure outsw
[2021-11-13 17:32:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-13 17:32:24,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-13 17:32:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure insw
[2021-11-13 17:32:24,312 INFO L138 BoogieDeclarations]: Found implementation of procedure insw
[2021-11-13 17:32:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_put_char
[2021-11-13 17:32:24,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_put_char
[2021-11-13 17:32:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:32:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-11-13 17:32:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata
[2021-11-13 17:32:24,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata
[2021-11-13 17:32:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_write_room
[2021-11-13 17:32:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_write_room
[2021-11-13 17:32:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_ioctl
[2021-11-13 17:32:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_ioctl
[2021-11-13 17:32:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock
[2021-11-13 17:32:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock
[2021-11-13 17:32:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure drop_dtr
[2021-11-13 17:32:24,317 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_dtr
[2021-11-13 17:32:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore
[2021-11-13 17:32:24,317 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore
[2021-11-13 17:32:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 17:32:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2021-11-13 17:32:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault
[2021-11-13 17:32:24,318 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault
[2021-11-13 17:32:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver
[2021-11-13 17:32:24,319 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver
[2021-11-13 17:32:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure outw
[2021-11-13 17:32:24,320 INFO L138 BoogieDeclarations]: Found implementation of procedure outw
[2021-11-13 17:32:24,320 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested
[2021-11-13 17:32:24,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested
[2021-11-13 17:32:24,320 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get
[2021-11-13 17:32:24,321 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get
[2021-11-13 17:32:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock
[2021-11-13 17:32:24,321 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock
[2021-11-13 17:32:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int
[2021-11-13 17:32:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_dtr_rts
[2021-11-13 17:32:24,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_dtr_rts
[2021-11-13 17:32:24,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc
[2021-11-13 17:32:24,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc
[2021-11-13 17:32:24,322 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user
[2021-11-13 17:32:24,322 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user
[2021-11-13 17:32:24,322 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_config_port
[2021-11-13 17:32:24,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_config_port
[2021-11-13 17:32:24,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2021-11-13 17:32:24,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 17:32:24,323 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmget
[2021-11-13 17:32:24,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmget
[2021-11-13 17:32:24,324 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_unthrottle
[2021-11-13 17:32:24,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_unthrottle
[2021-11-13 17:32:24,324 INFO L130 BoogieDeclarations]: Found specification of procedure lock_card
[2021-11-13 17:32:24,324 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_card
[2021-11-13 17:32:24,325 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_chars
[2021-11-13 17:32:24,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_chars
[2021-11-13 17:32:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure kfree
[2021-11-13 17:32:24,326 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree
[2021-11-13 17:32:24,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 17:32:24,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device
[2021-11-13 17:32:24,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device
[2021-11-13 17:32:24,327 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1
[2021-11-13 17:32:24,328 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1
[2021-11-13 17:32:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect
[2021-11-13 17:32:24,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect
[2021-11-13 17:32:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_carrier_raised
[2021-11-13 17:32:24,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_carrier_raised
[2021-11-13 17:32:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-13 17:32:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_hangup
[2021-11-13 17:32:24,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_hangup
[2021-11-13 17:32:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_throttle
[2021-11-13 17:32:24,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_throttle
[2021-11-13 17:32:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup
[2021-11-13 17:32:24,330 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup
[2021-11-13 17:32:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay
[2021-11-13 17:32:24,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay
[2021-11-13 17:32:24,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-11-13 17:32:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size
[2021-11-13 17:32:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1
[2021-11-13 17:32:24,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1
[2021-11-13 17:32:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user
[2021-11-13 17:32:24,336 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user
[2021-11-13 17:32:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer
[2021-11-13 17:32:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer
[2021-11-13 17:32:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_card
[2021-11-13 17:32:24,338 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_card
[2021-11-13 17:32:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_send_break
[2021-11-13 17:32:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_send_break
[2021-11-13 17:32:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:32:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure inw
[2021-11-13 17:32:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure inw
[2021-11-13 17:32:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure WaitTillCardIsFree
[2021-11-13 17:32:24,345 INFO L138 BoogieDeclarations]: Found implementation of procedure WaitTillCardIsFree
[2021-11-13 17:32:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:32:24,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:32:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver
[2021-11-13 17:32:24,345 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver
[2021-11-13 17:32:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR
[2021-11-13 17:32:24,346 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR
[2021-11-13 17:32:25,666 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true;
[2021-11-13 17:32:35,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:32:35,705 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:32:35,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:35 BoogieIcfgContainer
[2021-11-13 17:32:35,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:32:35,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:32:35,713 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:32:35,717 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:32:35,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:32:20" (1/3) ...
[2021-11-13 17:32:35,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350d9a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:35, skipping insertion in model container
[2021-11-13 17:32:35,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:23" (2/3) ...
[2021-11-13 17:32:35,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350d9a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:35, skipping insertion in model container
[2021-11-13 17:32:35,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:35" (3/3) ...
[2021-11-13 17:32:35,721 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i
[2021-11-13 17:32:35,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:32:35,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:32:35,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:32:35,798 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
[2021-11-13 17:32:35,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:32:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 1316 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 330 states have call successors, (330), 61 states have call predecessors, (330), 60 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322)
[2021-11-13 17:32:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2021-11-13 17:32:35,900 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:35,901 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:35,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:32:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1055150802, now seen corresponding path program 1 times
[2021-11-13 17:32:35,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:35,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374233425]
[2021-11-13 17:32:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:35,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:32:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:32:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:32:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:32:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2021-11-13 17:32:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2021-11-13 17:32:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2021-11-13 17:32:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2021-11-13 17:32:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2021-11-13 17:32:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2021-11-13 17:32:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2021-11-13 17:32:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2021-11-13 17:32:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99
[2021-11-13 17:32:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113
[2021-11-13 17:32:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2021-11-13 17:32:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-11-13 17:32:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2021-11-13 17:32:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137
[2021-11-13 17:32:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2021-11-13 17:32:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2021-11-13 17:32:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151
[2021-11-13 17:32:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155
[2021-11-13 17:32:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2021-11-13 17:32:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2021-11-13 17:32:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-11-13 17:32:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2021-11-13 17:32:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2021-11-13 17:32:37,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:37,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374233425]
[2021-11-13 17:32:37,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374233425] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:37,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:37,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:32:37,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461976859]
[2021-11-13 17:32:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:37,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:32:37,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:32:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:32:37,187 INFO L87 Difference]: Start difference. First operand has 1316 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 330 states have call successors, (330), 61 states have call predecessors, (330), 60 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2021-11-13 17:32:39,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:42,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:46,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:46,312 INFO L93 Difference]: Finished difference Result 3852 states and 5904 transitions.
[2021-11-13 17:32:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:32:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 188
[2021-11-13 17:32:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:46,360 INFO L225 Difference]: With dead ends: 3852
[2021-11-13 17:32:46,360 INFO L226 Difference]: Without dead ends: 2500
[2021-11-13 17:32:46,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:46,379 INFO L933 BasicCegarLoop]: 2082 mSDtfsCounter, 1947 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 815 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7840.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.83ms SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8689.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:46,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2186 Valid, 4512 Invalid, 2088 Unknown, 0 Unchecked, 66.83ms Time], IncrementalHoareTripleChecker [815 Valid, 1271 Invalid, 2 Unknown, 0 Unchecked, 8689.00ms Time]
[2021-11-13 17:32:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states.
[2021-11-13 17:32:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2334.
[2021-11-13 17:32:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 1653 states have (on average 1.4047186932849365) internal successors, (2322), 1693 states have internal predecessors, (2322), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567)
[2021-11-13 17:32:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3457 transitions.
[2021-11-13 17:32:46,704 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3457 transitions. Word has length 188
[2021-11-13 17:32:46,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:46,706 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 3457 transitions.
[2021-11-13 17:32:46,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2021-11-13 17:32:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3457 transitions.
[2021-11-13 17:32:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249
[2021-11-13 17:32:46,758 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:46,759 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:46,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:32:46,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:32:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:46,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1713129911, now seen corresponding path program 1 times
[2021-11-13 17:32:46,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:46,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656502731]
[2021-11-13 17:32:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:46,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:32:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:32:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:32:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:32:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2021-11-13 17:32:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2021-11-13 17:32:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:32:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2021-11-13 17:32:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2021-11-13 17:32:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2021-11-13 17:32:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2021-11-13 17:32:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2021-11-13 17:32:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120
[2021-11-13 17:32:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126
[2021-11-13 17:32:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2021-11-13 17:32:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135
[2021-11-13 17:32:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139
[2021-11-13 17:32:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143
[2021-11-13 17:32:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149
[2021-11-13 17:32:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2021-11-13 17:32:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2021-11-13 17:32:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2021-11-13 17:32:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-11-13 17:32:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2021-11-13 17:32:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2021-11-13 17:32:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2021-11-13 17:32:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2021-11-13 17:32:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2021-11-13 17:32:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2021-11-13 17:32:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219
[2021-11-13 17:32:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2021-11-13 17:32:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-11-13 17:32:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239
[2021-11-13 17:32:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked.
[2021-11-13 17:32:47,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:47,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656502731]
[2021-11-13 17:32:47,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656502731] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:47,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:47,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 17:32:47,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083597074]
[2021-11-13 17:32:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:47,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:32:47,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:32:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:32:47,552 INFO L87 Difference]: Start difference. First operand 2334 states and 3457 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33)
[2021-11-13 17:32:49,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:53,085 INFO L93 Difference]: Finished difference Result 4828 states and 7300 transitions.
[2021-11-13 17:32:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:32:53,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 248
[2021-11-13 17:32:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:53,113 INFO L225 Difference]: With dead ends: 4828
[2021-11-13 17:32:53,113 INFO L226 Difference]: Without dead ends: 2514
[2021-11-13 17:32:53,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:32:53,131 INFO L933 BasicCegarLoop]: 1793 mSDtfsCounter, 657 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 757 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4688.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 5731 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.80ms SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5236.48ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:53,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 5731 Invalid, 2211 Unknown, 0 Unchecked, 43.80ms Time], IncrementalHoareTripleChecker [757 Valid, 1453 Invalid, 1 Unknown, 0 Unchecked, 5236.48ms Time]
[2021-11-13 17:32:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states.
[2021-11-13 17:32:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2336.
[2021-11-13 17:32:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1655 states have (on average 1.4006042296072507) internal successors, (2318), 1695 states have internal predecessors, (2318), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567)
[2021-11-13 17:32:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3453 transitions.
[2021-11-13 17:32:53,384 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3453 transitions. Word has length 248
[2021-11-13 17:32:53,385 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:53,385 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 3453 transitions.
[2021-11-13 17:32:53,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33)
[2021-11-13 17:32:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3453 transitions.
[2021-11-13 17:32:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258
[2021-11-13 17:32:53,410 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:53,410 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:53,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 17:32:53,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:32:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash 325765706, now seen corresponding path program 1 times
[2021-11-13 17:32:53,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:53,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137186814]
[2021-11-13 17:32:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:53,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:32:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:32:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:32:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:32:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2021-11-13 17:32:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2021-11-13 17:32:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:32:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64
[2021-11-13 17:32:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2021-11-13 17:32:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78
[2021-11-13 17:32:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84
[2021-11-13 17:32:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119
[2021-11-13 17:32:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125
[2021-11-13 17:32:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131
[2021-11-13 17:32:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136
[2021-11-13 17:32:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2021-11-13 17:32:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144
[2021-11-13 17:32:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2021-11-13 17:32:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154
[2021-11-13 17:32:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2021-11-13 17:32:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178
[2021-11-13 17:32:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:32:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:32:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200
[2021-11-13 17:32:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2021-11-13 17:32:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2021-11-13 17:32:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214
[2021-11-13 17:32:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2021-11-13 17:32:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2021-11-13 17:32:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:54,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2021-11-13 17:32:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:32:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:32:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248
[2021-11-13 17:32:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked.
[2021-11-13 17:32:54,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:54,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137186814]
[2021-11-13 17:32:54,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137186814] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:54,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:54,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:32:54,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235047702]
[2021-11-13 17:32:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:54,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:32:54,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:32:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:54,075 INFO L87 Difference]: Start difference. First operand 2336 states and 3453 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2021-11-13 17:32:56,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:32:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:59,124 INFO L93 Difference]: Finished difference Result 4822 states and 7201 transitions.
[2021-11-13 17:32:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:32:59,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 257
[2021-11-13 17:32:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:59,149 INFO L225 Difference]: With dead ends: 4822
[2021-11-13 17:32:59,149 INFO L226 Difference]: Without dead ends: 2506
[2021-11-13 17:32:59,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:59,166 INFO L933 BasicCegarLoop]: 1801 mSDtfsCounter, 657 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 744 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4302.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.81ms SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4791.59ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:59,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 4232 Invalid, 1754 Unknown, 0 Unchecked, 35.81ms Time], IncrementalHoareTripleChecker [744 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 4791.59ms Time]
[2021-11-13 17:32:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states.
[2021-11-13 17:32:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2338.
[2021-11-13 17:32:59,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1657 states have (on average 1.40012070006035) internal successors, (2320), 1697 states have internal predecessors, (2320), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567)
[2021-11-13 17:32:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3455 transitions.
[2021-11-13 17:32:59,310 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3455 transitions. Word has length 257
[2021-11-13 17:32:59,310 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:59,310 INFO L470 AbstractCegarLoop]: Abstraction has 2338 states and 3455 transitions.
[2021-11-13 17:32:59,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2021-11-13 17:32:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3455 transitions.
[2021-11-13 17:32:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260
[2021-11-13 17:32:59,331 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:59,332 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:59,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 17:32:59,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:32:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:59,333 INFO L85 PathProgramCache]: Analyzing trace with hash 761451430, now seen corresponding path program 1 times
[2021-11-13 17:32:59,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:59,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342285051]
[2021-11-13 17:32:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:59,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:32:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:32:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:32:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:32:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2021-11-13 17:32:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2021-11-13 17:32:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:32:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2021-11-13 17:32:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2021-11-13 17:32:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2021-11-13 17:32:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:32:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2021-11-13 17:32:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127
[2021-11-13 17:32:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2021-11-13 17:32:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138
[2021-11-13 17:32:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142
[2021-11-13 17:32:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2021-11-13 17:32:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150
[2021-11-13 17:32:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2021-11-13 17:32:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166
[2021-11-13 17:32:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180
[2021-11-13 17:32:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:32:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:32:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202
[2021-11-13 17:32:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206
[2021-11-13 17:32:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211
[2021-11-13 17:32:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216
[2021-11-13 17:32:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220
[2021-11-13 17:32:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2021-11-13 17:32:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2021-11-13 17:32:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:32:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:32:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250
[2021-11-13 17:32:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked.
[2021-11-13 17:32:59,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:59,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342285051]
[2021-11-13 17:32:59,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342285051] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:32:59,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591391619]
[2021-11-13 17:32:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:59,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:32:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:32:59,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:32:59,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:33:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:00,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 17:33:00,959 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:33:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked.
[2021-11-13 17:33:01,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:33:01,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591391619] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:33:01,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:33:01,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7
[2021-11-13 17:33:01,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596806872]
[2021-11-13 17:33:01,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:33:01,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 17:33:01,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:33:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 17:33:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:33:01,950 INFO L87 Difference]: Start difference. First operand 2338 states and 3455 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2021-11-13 17:33:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:02,065 INFO L93 Difference]: Finished difference Result 3799 states and 5693 transitions.
[2021-11-13 17:33:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 17:33:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 259
[2021-11-13 17:33:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:02,100 INFO L225 Difference]: With dead ends: 3799
[2021-11-13 17:33:02,100 INFO L226 Difference]: Without dead ends: 3796
[2021-11-13 17:33:02,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:33:02,105 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 1214 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.93ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:02,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 4004 Invalid, 5 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 6.93ms Time]
[2021-11-13 17:33:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states.
[2021-11-13 17:33:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3718.
[2021-11-13 17:33:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 2678 states have (on average 1.4133681852128455) internal successors, (3785), 2730 states have internal predecessors, (3785), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917)
[2021-11-13 17:33:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 5552 transitions.
[2021-11-13 17:33:02,293 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 5552 transitions. Word has length 259
[2021-11-13 17:33:02,294 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:02,294 INFO L470 AbstractCegarLoop]: Abstraction has 3718 states and 5552 transitions.
[2021-11-13 17:33:02,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2021-11-13 17:33:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 5552 transitions.
[2021-11-13 17:33:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295
[2021-11-13 17:33:02,330 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:33:02,331 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:02,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:02,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:02,555 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:33:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:33:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 125452575, now seen corresponding path program 1 times
[2021-11-13 17:33:02,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:33:02,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698425660]
[2021-11-13 17:33:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:02,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:33:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:33:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:33:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2021-11-13 17:33:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2021-11-13 17:33:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2021-11-13 17:33:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2021-11-13 17:33:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2021-11-13 17:33:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:33:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2021-11-13 17:33:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2021-11-13 17:33:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2021-11-13 17:33:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2021-11-13 17:33:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2021-11-13 17:33:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2021-11-13 17:33:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2021-11-13 17:33:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2021-11-13 17:33:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2021-11-13 17:33:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2021-11-13 17:33:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2021-11-13 17:33:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2021-11-13 17:33:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2021-11-13 17:33:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2021-11-13 17:33:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2021-11-13 17:33:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2021-11-13 17:33:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2021-11-13 17:33:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263
[2021-11-13 17:33:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285
[2021-11-13 17:33:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2021-11-13 17:33:03,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:33:03,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698425660]
[2021-11-13 17:33:03,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698425660] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:33:03,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346359179]
[2021-11-13 17:33:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:03,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:03,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:33:03,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:33:03,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:33:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:04,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-11-13 17:33:04,100 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:33:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked.
[2021-11-13 17:33:04,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:33:04,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346359179] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:33:04,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:33:04,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2021-11-13 17:33:04,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606071545]
[2021-11-13 17:33:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:33:04,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 17:33:04,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:33:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 17:33:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:33:04,844 INFO L87 Difference]: Start difference. First operand 3718 states and 5552 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)
[2021-11-13 17:33:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:05,303 INFO L93 Difference]: Finished difference Result 10938 states and 16332 transitions.
[2021-11-13 17:33:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 17:33:05,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294
[2021-11-13 17:33:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:05,365 INFO L225 Difference]: With dead ends: 10938
[2021-11-13 17:33:05,365 INFO L226 Difference]: Without dead ends: 7240
[2021-11-13 17:33:05,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:33:05,390 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 1838 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.45ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.38ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:05,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 4079 Invalid, 50 Unknown, 0 Unchecked, 10.45ms Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 131.38ms Time]
[2021-11-13 17:33:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states.
[2021-11-13 17:33:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7233.
[2021-11-13 17:33:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 5223 states have (on average 1.4156614972238177) internal successors, (7394), 5329 states have internal predecessors, (7394), 1632 states have call successors, (1632), 378 states have call predecessors, (1632), 377 states have return successors, (1755), 1607 states have call predecessors, (1755), 1631 states have call successors, (1755)
[2021-11-13 17:33:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 10781 transitions.
[2021-11-13 17:33:05,814 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 10781 transitions. Word has length 294
[2021-11-13 17:33:05,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:05,814 INFO L470 AbstractCegarLoop]: Abstraction has 7233 states and 10781 transitions.
[2021-11-13 17:33:05,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)
[2021-11-13 17:33:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 10781 transitions.
[2021-11-13 17:33:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295
[2021-11-13 17:33:05,876 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:33:05,877 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:05,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:06,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:06,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:33:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:33:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1698695719, now seen corresponding path program 1 times
[2021-11-13 17:33:06,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:33:06,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107025874]
[2021-11-13 17:33:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:06,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:33:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:33:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:33:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2021-11-13 17:33:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2021-11-13 17:33:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2021-11-13 17:33:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73
[2021-11-13 17:33:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2021-11-13 17:33:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:33:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2021-11-13 17:33:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156
[2021-11-13 17:33:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2021-11-13 17:33:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2021-11-13 17:33:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173
[2021-11-13 17:33:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177
[2021-11-13 17:33:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2021-11-13 17:33:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2021-11-13 17:33:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2021-11-13 17:33:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2021-11-13 17:33:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215
[2021-11-13 17:33:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237
[2021-11-13 17:33:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2021-11-13 17:33:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2021-11-13 17:33:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251
[2021-11-13 17:33:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255
[2021-11-13 17:33:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2021-11-13 17:33:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263
[2021-11-13 17:33:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285
[2021-11-13 17:33:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2021-11-13 17:33:06,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:33:06,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107025874]
[2021-11-13 17:33:06,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107025874] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:33:06,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277780384]
[2021-11-13 17:33:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:06,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:06,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:33:06,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:33:06,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 17:33:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:07,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-11-13 17:33:07,588 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:33:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2021-11-13 17:33:08,334 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:33:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2021-11-13 17:33:09,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277780384] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:33:09,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:33:09,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11
[2021-11-13 17:33:09,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591059648]
[2021-11-13 17:33:09,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:33:09,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-13 17:33:09,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:33:09,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-13 17:33:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2021-11-13 17:33:09,147 INFO L87 Difference]: Start difference. First operand 7233 states and 10781 transitions. Second operand has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 7 states have internal predecessors, (207), 2 states have call successors, (79), 6 states have call predecessors, (79), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2021-11-13 17:33:11,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:13,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:15,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:20,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:22,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:27,885 INFO L93 Difference]: Finished difference Result 15156 states and 22884 transitions.
[2021-11-13 17:33:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 17:33:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 7 states have internal predecessors, (207), 2 states have call successors, (79), 6 states have call predecessors, (79), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 294
[2021-11-13 17:33:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:27,963 INFO L225 Difference]: With dead ends: 15156
[2021-11-13 17:33:27,964 INFO L226 Difference]: Without dead ends: 7943
[2021-11-13 17:33:28,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:33:28,002 INFO L933 BasicCegarLoop]: 1759 mSDtfsCounter, 798 mSDsluCounter, 6260 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 850 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16884.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 8019 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.53ms SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18237.77ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:28,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 8019 Invalid, 3897 Unknown, 0 Unchecked, 65.53ms Time], IncrementalHoareTripleChecker [850 Valid, 3043 Invalid, 4 Unknown, 0 Unchecked, 18237.77ms Time]
[2021-11-13 17:33:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states.
[2021-11-13 17:33:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 7405.
[2021-11-13 17:33:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 5355 states have (on average 1.4091503267973857) internal successors, (7546), 5481 states have internal predecessors, (7546), 1636 states have call successors, (1636), 378 states have call predecessors, (1636), 413 states have return successors, (1883), 1627 states have call predecessors, (1883), 1635 states have call successors, (1883)
[2021-11-13 17:33:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 11065 transitions.
[2021-11-13 17:33:28,428 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 11065 transitions. Word has length 294
[2021-11-13 17:33:28,429 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:28,429 INFO L470 AbstractCegarLoop]: Abstraction has 7405 states and 11065 transitions.
[2021-11-13 17:33:28,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 7 states have internal predecessors, (207), 2 states have call successors, (79), 6 states have call predecessors, (79), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2021-11-13 17:33:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 11065 transitions.
[2021-11-13 17:33:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301
[2021-11-13 17:33:28,481 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:33:28,482 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:28,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:28,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-13 17:33:28,702 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:33:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:33:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1224638573, now seen corresponding path program 2 times
[2021-11-13 17:33:28,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:33:28,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883092010]
[2021-11-13 17:33:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:28,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:33:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:33:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:33:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2021-11-13 17:33:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2021-11-13 17:33:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2021-11-13 17:33:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2021-11-13 17:33:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:33:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2021-11-13 17:33:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2021-11-13 17:33:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162
[2021-11-13 17:33:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2021-11-13 17:33:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174
[2021-11-13 17:33:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179
[2021-11-13 17:33:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183
[2021-11-13 17:33:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2021-11-13 17:33:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2021-11-13 17:33:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197
[2021-11-13 17:33:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2021-11-13 17:33:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221
[2021-11-13 17:33:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243
[2021-11-13 17:33:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2021-11-13 17:33:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252
[2021-11-13 17:33:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257
[2021-11-13 17:33:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261
[2021-11-13 17:33:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265
[2021-11-13 17:33:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269
[2021-11-13 17:33:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291
[2021-11-13 17:33:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2021-11-13 17:33:29,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:33:29,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883092010]
[2021-11-13 17:33:29,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883092010] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:33:29,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906406154]
[2021-11-13 17:33:29,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 17:33:29,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:29,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:33:29,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:33:29,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 17:33:30,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-11-13 17:33:30,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 17:33:30,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 17:33:30,241 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:33:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2021-11-13 17:33:31,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:33:31,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906406154] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:33:31,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:33:31,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10
[2021-11-13 17:33:31,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518563110]
[2021-11-13 17:33:31,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:33:31,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:33:31,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:33:31,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:33:31,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2021-11-13 17:33:31,219 INFO L87 Difference]: Start difference. First operand 7405 states and 11065 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35)
[2021-11-13 17:33:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:31,931 INFO L93 Difference]: Finished difference Result 25403 states and 38642 transitions.
[2021-11-13 17:33:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:33:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 300
[2021-11-13 17:33:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:32,045 INFO L225 Difference]: With dead ends: 25403
[2021-11-13 17:33:32,045 INFO L226 Difference]: Without dead ends: 18018
[2021-11-13 17:33:32,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2021-11-13 17:33:32,093 INFO L933 BasicCegarLoop]: 3041 mSDtfsCounter, 2265 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.29ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.40ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:32,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 7459 Invalid, 56 Unknown, 0 Unchecked, 22.29ms Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 189.40ms Time]
[2021-11-13 17:33:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18018 states.
[2021-11-13 17:33:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18018 to 14057.
[2021-11-13 17:33:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14057 states, 10211 states have (on average 1.4110273234746842) internal successors, (14408), 10459 states have internal predecessors, (14408), 3032 states have call successors, (3032), 742 states have call predecessors, (3032), 813 states have return successors, (3527), 3013 states have call predecessors, (3527), 3031 states have call successors, (3527)
[2021-11-13 17:33:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 20967 transitions.
[2021-11-13 17:33:33,098 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 20967 transitions. Word has length 300
[2021-11-13 17:33:33,099 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:33,099 INFO L470 AbstractCegarLoop]: Abstraction has 14057 states and 20967 transitions.
[2021-11-13 17:33:33,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35)
[2021-11-13 17:33:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 20967 transitions.
[2021-11-13 17:33:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303
[2021-11-13 17:33:33,201 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:33:33,201 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:33,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:33,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:33,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:33:33,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:33:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash 304456626, now seen corresponding path program 1 times
[2021-11-13 17:33:33,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:33:33,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269387712]
[2021-11-13 17:33:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:33,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:33:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:33:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:33:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2021-11-13 17:33:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2021-11-13 17:33:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72
[2021-11-13 17:33:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79
[2021-11-13 17:33:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:33:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2021-11-13 17:33:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2021-11-13 17:33:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164
[2021-11-13 17:33:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170
[2021-11-13 17:33:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176
[2021-11-13 17:33:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2021-11-13 17:33:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185
[2021-11-13 17:33:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189
[2021-11-13 17:33:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193
[2021-11-13 17:33:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199
[2021-11-13 17:33:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209
[2021-11-13 17:33:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223
[2021-11-13 17:33:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245
[2021-11-13 17:33:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249
[2021-11-13 17:33:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254
[2021-11-13 17:33:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259
[2021-11-13 17:33:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263
[2021-11-13 17:33:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267
[2021-11-13 17:33:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271
[2021-11-13 17:33:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293
[2021-11-13 17:33:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked.
[2021-11-13 17:33:34,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:33:34,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269387712]
[2021-11-13 17:33:34,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269387712] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:33:34,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59398382]
[2021-11-13 17:33:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:34,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:33:34,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:33:34,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 17:33:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 17:33:34,935 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:33:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 73 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2021-11-13 17:33:35,668 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:33:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2021-11-13 17:33:36,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59398382] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:33:36,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:33:36,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18
[2021-11-13 17:33:36,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450401263]
[2021-11-13 17:33:36,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:33:36,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2021-11-13 17:33:36,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:33:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2021-11-13 17:33:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306
[2021-11-13 17:33:36,453 INFO L87 Difference]: Start difference. First operand 14057 states and 20967 transitions. Second operand has 18 states, 18 states have (on average 12.61111111111111) internal successors, (227), 14 states have internal predecessors, (227), 2 states have call successors, (79), 6 states have call predecessors, (79), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2021-11-13 17:33:38,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:40,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:46,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:33:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:50,759 INFO L93 Difference]: Finished difference Result 30144 states and 45288 transitions.
[2021-11-13 17:33:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-11-13 17:33:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.61111111111111) internal successors, (227), 14 states have internal predecessors, (227), 2 states have call successors, (79), 6 states have call predecessors, (79), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 302
[2021-11-13 17:33:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:50,850 INFO L225 Difference]: With dead ends: 30144
[2021-11-13 17:33:50,850 INFO L226 Difference]: Without dead ends: 16107
[2021-11-13 17:33:50,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560
[2021-11-13 17:33:50,907 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 1117 mSDsluCounter, 8414 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 1296 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12121.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 10175 SdHoareTripleChecker+Invalid, 4915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.88ms SdHoareTripleChecker+Time, 1296 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13184.07ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:50,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 10175 Invalid, 4915 Unknown, 0 Unchecked, 51.88ms Time], IncrementalHoareTripleChecker [1296 Valid, 3616 Invalid, 3 Unknown, 0 Unchecked, 13184.07ms Time]
[2021-11-13 17:33:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16107 states.
[2021-11-13 17:33:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16107 to 14649.
[2021-11-13 17:33:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14649 states, 10803 states have (on average 1.3899842636304731) internal successors, (15016), 11051 states have internal predecessors, (15016), 3032 states have call successors, (3032), 742 states have call predecessors, (3032), 813 states have return successors, (3527), 3013 states have call predecessors, (3527), 3031 states have call successors, (3527)
[2021-11-13 17:33:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14649 states to 14649 states and 21575 transitions.
[2021-11-13 17:33:51,885 INFO L78 Accepts]: Start accepts. Automaton has 14649 states and 21575 transitions. Word has length 302
[2021-11-13 17:33:51,885 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:51,885 INFO L470 AbstractCegarLoop]: Abstraction has 14649 states and 21575 transitions.
[2021-11-13 17:33:51,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.61111111111111) internal successors, (227), 14 states have internal predecessors, (227), 2 states have call successors, (79), 6 states have call predecessors, (79), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66)
[2021-11-13 17:33:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 14649 states and 21575 transitions.
[2021-11-13 17:33:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340
[2021-11-13 17:33:51,957 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:33:51,957 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:51,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:52,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:52,171 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:33:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:33:52,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1807898197, now seen corresponding path program 2 times
[2021-11-13 17:33:52,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:33:52,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258972662]
[2021-11-13 17:33:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:52,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:33:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:33:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:33:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:33:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2021-11-13 17:33:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2021-11-13 17:33:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2021-11-13 17:33:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2021-11-13 17:33:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2021-11-13 17:33:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2021-11-13 17:33:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:33:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:33:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:33:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2021-11-13 17:33:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2021-11-13 17:33:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2021-11-13 17:33:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2021-11-13 17:33:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2021-11-13 17:33:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2021-11-13 17:33:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2021-11-13 17:33:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2021-11-13 17:33:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2021-11-13 17:33:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260
[2021-11-13 17:33:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282
[2021-11-13 17:33:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2021-11-13 17:33:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291
[2021-11-13 17:33:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296
[2021-11-13 17:33:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300
[2021-11-13 17:33:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304
[2021-11-13 17:33:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308
[2021-11-13 17:33:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:33:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:33:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330
[2021-11-13 17:33:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked.
[2021-11-13 17:33:53,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:33:53,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258972662]
[2021-11-13 17:33:53,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258972662] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:33:53,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750332164]
[2021-11-13 17:33:53,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 17:33:53,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:53,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:33:53,023 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:33:53,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 17:34:25,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-11-13 17:34:25,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 17:34:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 38 conjunts are in the unsatisfiable core
[2021-11-13 17:34:25,293 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:34:26,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 17:34:26,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 107
[2021-11-13 17:34:26,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 17:34:26,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 66
[2021-11-13 17:34:26,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50
[2021-11-13 17:34:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked.
[2021-11-13 17:34:26,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:34:26,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750332164] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:34:26,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 17:34:26,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14
[2021-11-13 17:34:26,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305890726]
[2021-11-13 17:34:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:34:26,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:34:26,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:34:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:34:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:34:26,383 INFO L87 Difference]: Start difference. First operand 14649 states and 21575 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35)
[2021-11-13 17:34:28,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:34:31,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:34:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:34:33,106 INFO L93 Difference]: Finished difference Result 22755 states and 33604 transitions.
[2021-11-13 17:34:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:34:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 339
[2021-11-13 17:34:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:34:33,186 INFO L225 Difference]: With dead ends: 22755
[2021-11-13 17:34:33,186 INFO L226 Difference]: Without dead ends: 15058
[2021-11-13 17:34:33,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:34:33,223 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 69 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5750.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5677 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.54ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6087.12ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:34:33,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 5677 Invalid, 378 Unknown, 0 Unchecked, 14.54ms Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 2 Unknown, 0 Unchecked, 6087.12ms Time]
[2021-11-13 17:34:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15058 states.
[2021-11-13 17:34:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15058 to 14665.
[2021-11-13 17:34:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14665 states, 10819 states have (on average 1.3897772437378686) internal successors, (15036), 11067 states have internal predecessors, (15036), 3032 states have call successors, (3032), 742 states have call predecessors, (3032), 813 states have return successors, (3527), 3013 states have call predecessors, (3527), 3031 states have call successors, (3527)
[2021-11-13 17:34:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14665 states to 14665 states and 21595 transitions.
[2021-11-13 17:34:33,956 INFO L78 Accepts]: Start accepts. Automaton has 14665 states and 21595 transitions. Word has length 339
[2021-11-13 17:34:33,957 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:34:33,957 INFO L470 AbstractCegarLoop]: Abstraction has 14665 states and 21595 transitions.
[2021-11-13 17:34:33,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35)
[2021-11-13 17:34:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14665 states and 21595 transitions.
[2021-11-13 17:34:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458
[2021-11-13 17:34:34,027 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:34:34,028 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:34:34,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 17:34:34,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2021-11-13 17:34:34,251 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:34:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:34:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -38093175, now seen corresponding path program 1 times
[2021-11-13 17:34:34,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:34:34,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774468596]
[2021-11-13 17:34:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:34:34,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:34:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:34:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:34:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:34:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:34:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2021-11-13 17:34:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93
[2021-11-13 17:34:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:34:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2021-11-13 17:34:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116
[2021-11-13 17:34:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2021-11-13 17:34:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129
[2021-11-13 17:34:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146
[2021-11-13 17:34:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:34:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:34:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:34:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201
[2021-11-13 17:34:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207
[2021-11-13 17:34:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213
[2021-11-13 17:34:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218
[2021-11-13 17:34:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222
[2021-11-13 17:34:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226
[2021-11-13 17:34:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230
[2021-11-13 17:34:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236
[2021-11-13 17:34:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246
[2021-11-13 17:34:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2021-11-13 17:34:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:34:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:34:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280
[2021-11-13 17:34:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284
[2021-11-13 17:34:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289
[2021-11-13 17:34:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294
[2021-11-13 17:34:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2021-11-13 17:34:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302
[2021-11-13 17:34:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306
[2021-11-13 17:34:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:34:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:34:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328
[2021-11-13 17:34:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334
[2021-11-13 17:34:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338
[2021-11-13 17:34:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342
[2021-11-13 17:34:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346
[2021-11-13 17:34:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:34:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:34:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368
[2021-11-13 17:34:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378
[2021-11-13 17:34:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:34:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:34:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400
[2021-11-13 17:34:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404
[2021-11-13 17:34:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409
[2021-11-13 17:34:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414
[2021-11-13 17:34:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418
[2021-11-13 17:34:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422
[2021-11-13 17:34:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426
[2021-11-13 17:34:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:34:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:34:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448
[2021-11-13 17:34:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked.
[2021-11-13 17:34:35,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:34:35,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774468596]
[2021-11-13 17:34:35,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774468596] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:34:35,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375121953]
[2021-11-13 17:34:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:34:35,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:34:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:34:35,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:34:35,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 17:34:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:34:36,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3749 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 17:34:36,189 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:34:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 298 proven. 100 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked.
[2021-11-13 17:34:37,407 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:34:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1268 backedges. 234 proven. 100 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked.
[2021-11-13 17:34:38,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375121953] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:34:38,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:34:38,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 26
[2021-11-13 17:34:38,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888925788]
[2021-11-13 17:34:38,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:34:38,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2021-11-13 17:34:38,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:34:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2021-11-13 17:34:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650
[2021-11-13 17:34:38,611 INFO L87 Difference]: Start difference. First operand 14665 states and 21595 transitions. Second operand has 26 states, 26 states have (on average 11.307692307692308) internal successors, (294), 21 states have internal predecessors, (294), 2 states have call successors, (108), 6 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102)
[2021-11-13 17:34:40,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:34:42,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:34:44,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:34:51,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:35:02,869 INFO L93 Difference]: Finished difference Result 45002 states and 67732 transitions.
[2021-11-13 17:35:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2021-11-13 17:35:02,870 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.307692307692308) internal successors, (294), 21 states have internal predecessors, (294), 2 states have call successors, (108), 6 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) Word has length 457
[2021-11-13 17:35:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:35:03,156 INFO L225 Difference]: With dead ends: 45002
[2021-11-13 17:35:03,156 INFO L226 Difference]: Without dead ends: 30357
[2021-11-13 17:35:03,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1019 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=584, Invalid=2722, Unknown=0, NotChecked=0, Total=3306
[2021-11-13 17:35:03,210 INFO L933 BasicCegarLoop]: 2266 mSDtfsCounter, 3674 mSDsluCounter, 18123 mSDsCounter, 0 mSdLazyCounter, 7935 mSolverCounterSat, 2779 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20349.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4008 SdHoareTripleChecker+Valid, 20389 SdHoareTripleChecker+Invalid, 10718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.31ms SdHoareTripleChecker+Time, 2779 IncrementalHoareTripleChecker+Valid, 7935 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22194.59ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:35:03,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4008 Valid, 20389 Invalid, 10718 Unknown, 0 Unchecked, 122.31ms Time], IncrementalHoareTripleChecker [2779 Valid, 7935 Invalid, 4 Unknown, 0 Unchecked, 22194.59ms Time]
[2021-11-13 17:35:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30357 states.
[2021-11-13 17:35:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30357 to 28156.
[2021-11-13 17:35:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28156 states, 20703 states have (on average 1.397382021929189) internal successors, (28930), 21163 states have internal predecessors, (28930), 5895 states have call successors, (5895), 1430 states have call predecessors, (5895), 1557 states have return successors, (6838), 5862 states have call predecessors, (6838), 5894 states have call successors, (6838)
[2021-11-13 17:35:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28156 states to 28156 states and 41663 transitions.
[2021-11-13 17:35:04,751 INFO L78 Accepts]: Start accepts. Automaton has 28156 states and 41663 transitions. Word has length 457
[2021-11-13 17:35:04,751 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:35:04,751 INFO L470 AbstractCegarLoop]: Abstraction has 28156 states and 41663 transitions.
[2021-11-13 17:35:04,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.307692307692308) internal successors, (294), 21 states have internal predecessors, (294), 2 states have call successors, (108), 6 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102)
[2021-11-13 17:35:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 28156 states and 41663 transitions.
[2021-11-13 17:35:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498
[2021-11-13 17:35:04,898 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:35:04,901 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:35:04,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-13 17:35:05,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-11-13 17:35:05,128 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:35:05,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:35:05,128 INFO L85 PathProgramCache]: Analyzing trace with hash 376520039, now seen corresponding path program 1 times
[2021-11-13 17:35:05,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:35:05,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861678304]
[2021-11-13 17:35:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:35:05,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:35:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:35:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:35:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:35:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2021-11-13 17:35:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:35:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161
[2021-11-13 17:35:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168
[2021-11-13 17:35:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:35:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2021-11-13 17:35:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191
[2021-11-13 17:35:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198
[2021-11-13 17:35:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204
[2021-11-13 17:35:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2021-11-13 17:35:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2021-11-13 17:35:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2021-11-13 17:35:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2021-11-13 17:35:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2021-11-13 17:35:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2021-11-13 17:35:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2021-11-13 17:35:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2021-11-13 17:35:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2021-11-13 17:35:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2021-11-13 17:35:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320
[2021-11-13 17:35:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324
[2021-11-13 17:35:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329
[2021-11-13 17:35:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334
[2021-11-13 17:35:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338
[2021-11-13 17:35:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342
[2021-11-13 17:35:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346
[2021-11-13 17:35:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368
[2021-11-13 17:35:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374
[2021-11-13 17:35:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378
[2021-11-13 17:35:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382
[2021-11-13 17:35:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386
[2021-11-13 17:35:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408
[2021-11-13 17:35:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418
[2021-11-13 17:35:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440
[2021-11-13 17:35:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444
[2021-11-13 17:35:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449
[2021-11-13 17:35:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454
[2021-11-13 17:35:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458
[2021-11-13 17:35:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462
[2021-11-13 17:35:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466
[2021-11-13 17:35:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488
[2021-11-13 17:35:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked.
[2021-11-13 17:35:06,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:35:06,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861678304]
[2021-11-13 17:35:06,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861678304] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:35:06,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:35:06,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 17:35:06,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64287110]
[2021-11-13 17:35:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:35:06,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:35:06,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:35:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:35:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:35:06,048 INFO L87 Difference]: Start difference. First operand 28156 states and 41663 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49)
[2021-11-13 17:35:08,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:10,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:12,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:14,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:35:21,604 INFO L93 Difference]: Finished difference Result 72985 states and 107838 transitions.
[2021-11-13 17:35:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 17:35:21,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 497
[2021-11-13 17:35:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:35:21,816 INFO L225 Difference]: With dead ends: 72985
[2021-11-13 17:35:21,816 INFO L226 Difference]: Without dead ends: 44858
[2021-11-13 17:35:21,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:35:21,937 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 2210 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 1432 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12896.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 6571 SdHoareTripleChecker+Invalid, 4105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.07ms SdHoareTripleChecker+Time, 1432 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13937.74ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:35:21,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 6571 Invalid, 4105 Unknown, 0 Unchecked, 43.07ms Time], IncrementalHoareTripleChecker [1432 Valid, 2669 Invalid, 4 Unknown, 0 Unchecked, 13937.74ms Time]
[2021-11-13 17:35:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44858 states.
[2021-11-13 17:35:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44858 to 42013.
[2021-11-13 17:35:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42013 states, 31167 states have (on average 1.374466583245099) internal successors, (42838), 31943 states have internal predecessors, (42838), 8445 states have call successors, (8445), 2209 states have call predecessors, (8445), 2400 states have return successors, (9628), 8366 states have call predecessors, (9628), 8444 states have call successors, (9628)
[2021-11-13 17:35:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42013 states to 42013 states and 60911 transitions.
[2021-11-13 17:35:24,372 INFO L78 Accepts]: Start accepts. Automaton has 42013 states and 60911 transitions. Word has length 497
[2021-11-13 17:35:24,372 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:35:24,372 INFO L470 AbstractCegarLoop]: Abstraction has 42013 states and 60911 transitions.
[2021-11-13 17:35:24,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49)
[2021-11-13 17:35:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 42013 states and 60911 transitions.
[2021-11-13 17:35:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498
[2021-11-13 17:35:24,963 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:35:24,963 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:35:24,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-11-13 17:35:24,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:35:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:35:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1472174595, now seen corresponding path program 2 times
[2021-11-13 17:35:24,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:35:24,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051013116]
[2021-11-13 17:35:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:35:24,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:35:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:35:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:35:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:35:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2021-11-13 17:35:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2021-11-13 17:35:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:35:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2021-11-13 17:35:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2021-11-13 17:35:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2021-11-13 17:35:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2021-11-13 17:35:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187
[2021-11-13 17:35:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:35:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2021-11-13 17:35:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2021-11-13 17:35:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2021-11-13 17:35:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2021-11-13 17:35:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2021-11-13 17:35:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2021-11-13 17:35:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2021-11-13 17:35:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2021-11-13 17:35:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2021-11-13 17:35:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2021-11-13 17:35:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320
[2021-11-13 17:35:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324
[2021-11-13 17:35:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329
[2021-11-13 17:35:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334
[2021-11-13 17:35:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338
[2021-11-13 17:35:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342
[2021-11-13 17:35:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346
[2021-11-13 17:35:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368
[2021-11-13 17:35:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374
[2021-11-13 17:35:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378
[2021-11-13 17:35:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382
[2021-11-13 17:35:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386
[2021-11-13 17:35:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408
[2021-11-13 17:35:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418
[2021-11-13 17:35:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440
[2021-11-13 17:35:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444
[2021-11-13 17:35:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449
[2021-11-13 17:35:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454
[2021-11-13 17:35:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458
[2021-11-13 17:35:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462
[2021-11-13 17:35:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466
[2021-11-13 17:35:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488
[2021-11-13 17:35:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked.
[2021-11-13 17:35:25,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:35:25,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051013116]
[2021-11-13 17:35:25,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051013116] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:35:25,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:35:25,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 17:35:25,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616252105]
[2021-11-13 17:35:25,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:35:25,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:35:25,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:35:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:35:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:35:25,994 INFO L87 Difference]: Start difference. First operand 42013 states and 60911 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49)
[2021-11-13 17:35:28,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:30,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:32,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:34,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:36,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:41,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:35:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:35:48,184 INFO L93 Difference]: Finished difference Result 111959 states and 163796 transitions.
[2021-11-13 17:35:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-11-13 17:35:48,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 497
[2021-11-13 17:35:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:35:48,672 INFO L225 Difference]: With dead ends: 111959
[2021-11-13 17:35:48,672 INFO L226 Difference]: Without dead ends: 69978
[2021-11-13 17:35:48,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:35:48,834 INFO L933 BasicCegarLoop]: 2515 mSDtfsCounter, 2377 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 1684 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18333.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 7077 SdHoareTripleChecker+Invalid, 5007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.16ms SdHoareTripleChecker+Time, 1684 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19704.20ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:35:48,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2624 Valid, 7077 Invalid, 5007 Unknown, 0 Unchecked, 49.16ms Time], IncrementalHoareTripleChecker [1684 Valid, 3317 Invalid, 6 Unknown, 0 Unchecked, 19704.20ms Time]
[2021-11-13 17:35:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69978 states.
[2021-11-13 17:35:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69978 to 65081.
[2021-11-13 17:35:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65081 states, 48851 states have (on average 1.351620232953266) internal successors, (66028), 50075 states have internal predecessors, (66028), 12323 states have call successors, (12323), 3587 states have call predecessors, (12323), 3906 states have return successors, (13810), 12208 states have call predecessors, (13810), 12322 states have call successors, (13810)
[2021-11-13 17:35:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65081 states to 65081 states and 92161 transitions.
[2021-11-13 17:35:52,327 INFO L78 Accepts]: Start accepts. Automaton has 65081 states and 92161 transitions. Word has length 497
[2021-11-13 17:35:52,327 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:35:52,328 INFO L470 AbstractCegarLoop]: Abstraction has 65081 states and 92161 transitions.
[2021-11-13 17:35:52,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (50), 5 states have call predecessors, (50), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49)
[2021-11-13 17:35:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 65081 states and 92161 transitions.
[2021-11-13 17:35:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498
[2021-11-13 17:35:52,960 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:35:52,961 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:35:52,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2021-11-13 17:35:52,961 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:35:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:35:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1748375537, now seen corresponding path program 1 times
[2021-11-13 17:35:52,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:35:52,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063383344]
[2021-11-13 17:35:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:35:52,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:35:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:35:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-11-13 17:35:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2021-11-13 17:35:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2021-11-13 17:35:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117
[2021-11-13 17:35:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-11-13 17:35:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133
[2021-11-13 17:35:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140
[2021-11-13 17:35:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147
[2021-11-13 17:35:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153
[2021-11-13 17:35:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184
[2021-11-13 17:35:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2021-11-13 17:35:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2021-11-13 17:35:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241
[2021-11-13 17:35:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247
[2021-11-13 17:35:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253
[2021-11-13 17:35:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258
[2021-11-13 17:35:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262
[2021-11-13 17:35:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266
[2021-11-13 17:35:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270
[2021-11-13 17:35:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276
[2021-11-13 17:35:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286
[2021-11-13 17:35:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2021-11-13 17:35:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320
[2021-11-13 17:35:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324
[2021-11-13 17:35:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329
[2021-11-13 17:35:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334
[2021-11-13 17:35:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338
[2021-11-13 17:35:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342
[2021-11-13 17:35:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346
[2021-11-13 17:35:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368
[2021-11-13 17:35:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374
[2021-11-13 17:35:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378
[2021-11-13 17:35:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382
[2021-11-13 17:35:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386
[2021-11-13 17:35:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408
[2021-11-13 17:35:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418
[2021-11-13 17:35:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440
[2021-11-13 17:35:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444
[2021-11-13 17:35:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449
[2021-11-13 17:35:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454
[2021-11-13 17:35:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458
[2021-11-13 17:35:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462
[2021-11-13 17:35:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466
[2021-11-13 17:35:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-11-13 17:35:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2021-11-13 17:35:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488
[2021-11-13 17:35:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked.
[2021-11-13 17:35:53,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:35:53,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063383344]
[2021-11-13 17:35:53,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063383344] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:35:53,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187644852]
[2021-11-13 17:35:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:35:53,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:35:53,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:35:53,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:35:54,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-13 17:35:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:35:55,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 3951 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 17:35:55,061 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:35:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 72 proven. 551 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked.
[2021-11-13 17:35:56,356 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:35:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1903 backedges. 8 proven. 551 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked.
[2021-11-13 17:35:57,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187644852] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:35:57,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:35:57,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13
[2021-11-13 17:35:57,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873062311]
[2021-11-13 17:35:57,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:35:57,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-11-13 17:35:57,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:35:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-11-13 17:35:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:35:57,555 INFO L87 Difference]: Start difference. First operand 65081 states and 92161 transitions. Second operand has 13 states, 13 states have (on average 23.76923076923077) internal successors, (309), 9 states have internal predecessors, (309), 2 states have call successors, (108), 5 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102)
[2021-11-13 17:35:59,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:36:01,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:36:03,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-11-13 17:36:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:36:16,341 INFO L93 Difference]: Finished difference Result 115717 states and 163888 transitions.
[2021-11-13 17:36:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2021-11-13 17:36:16,342 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 23.76923076923077) internal successors, (309), 9 states have internal predecessors, (309), 2 states have call successors, (108), 5 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) Word has length 497
[2021-11-13 17:36:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:36:16,358 INFO L225 Difference]: With dead ends: 115717
[2021-11-13 17:36:16,358 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 17:36:16,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1109 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870
[2021-11-13 17:36:16,619 INFO L933 BasicCegarLoop]: 2863 mSDtfsCounter, 3212 mSDsluCounter, 16492 mSDsCounter, 0 mSdLazyCounter, 6222 mSolverCounterSat, 2291 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14230.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 19355 SdHoareTripleChecker+Invalid, 8516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.32ms SdHoareTripleChecker+Time, 2291 IncrementalHoareTripleChecker+Valid, 6222 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15745.14ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:36:16,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3535 Valid, 19355 Invalid, 8516 Unknown, 0 Unchecked, 93.32ms Time], IncrementalHoareTripleChecker [2291 Valid, 6222 Invalid, 3 Unknown, 0 Unchecked, 15745.14ms Time]
[2021-11-13 17:36:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 17:36:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 17:36:16,620 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)
[2021-11-13 17:36:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 17:36:16,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 497
[2021-11-13 17:36:16,636 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:36:16,636 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 17:36:16,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.76923076923077) internal successors, (309), 9 states have internal predecessors, (309), 2 states have call successors, (108), 5 states have call predecessors, (108), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102)
[2021-11-13 17:36:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 17:36:16,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 17:36:16,639 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:36:16,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-11-13 17:36:16,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6117fd8e-1804-4f49-9f23-fefb636040ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-11-13 17:36:16,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 17:39:16,346 WARN L227 SmtUtils]: Spent 2.69m on a formula simplification. DAG size of input: 1884 DAG size of output: 1879 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)
[2021-11-13 17:43:10,521 WARN L227 SmtUtils]: Spent 2.67m on a formula simplification. DAG size of input: 2009 DAG size of output: 2000 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)