./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 371146a21f508450d2917c35c74c2cfe0e1080bf9001699397599cb4eb3a0e88 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:49:41,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:49:41,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:49:41,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:49:41,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:49:41,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:49:41,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:49:41,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:49:41,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:49:41,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:49:41,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:49:41,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:49:41,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:49:41,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:49:41,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:49:41,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:49:41,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:49:41,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:49:41,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:49:41,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:49:41,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:49:41,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:49:41,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:49:41,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:49:41,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:49:41,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:49:41,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:49:41,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:49:41,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:49:41,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:49:41,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:49:41,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:49:41,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:49:41,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:49:41,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:49:41,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:49:41,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:49:41,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:49:41,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:49:41,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:49:41,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:49:41,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:49:41,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:49:41,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:49:41,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:49:41,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:49:41,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:49:41,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:49:41,280 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:49:41,280 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:49:41,281 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:49:41,281 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:49:41,281 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:49:41,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:49:41,282 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:49:41,282 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:49:41,282 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:49:41,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:49:41,283 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:49:41,283 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:49:41,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:49:41,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:49:41,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:49:41,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:49:41,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:49:41,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:49:41,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:49:41,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:49:41,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:49:41,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:49:41,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:49:41,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:49:41,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:49:41,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:49:41,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:49:41,287 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:49:41,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:49:41,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:49:41,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:49:41,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:49:41,289 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371146a21f508450d2917c35c74c2cfe0e1080bf9001699397599cb4eb3a0e88 [2021-11-20 23:49:41,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:49:41,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:49:41,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:49:41,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:49:41,545 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:49:41,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-20 23:49:41,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/data/e4684221e/aaad7480748245cfb52e80de4578eec1/FLAG0ec919610 [2021-11-20 23:49:42,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:49:42,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-20 23:49:42,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/data/e4684221e/aaad7480748245cfb52e80de4578eec1/FLAG0ec919610 [2021-11-20 23:49:42,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/data/e4684221e/aaad7480748245cfb52e80de4578eec1 [2021-11-20 23:49:42,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:49:42,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:49:42,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:49:42,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:49:42,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:49:42,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:49:42" (1/1) ... [2021-11-20 23:49:42,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7ed2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:42, skipping insertion in model container [2021-11-20 23:49:42,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:49:42" (1/1) ... [2021-11-20 23:49:42,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:49:43,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:49:46,970 WARN L230 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_ce1a05fb-4e79-4d57-b6ef-6672551b6810/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402539,402552] [2021-11-20 23:49:46,979 WARN L230 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_ce1a05fb-4e79-4d57-b6ef-6672551b6810/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402684,402697] [2021-11-20 23:49:47,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:49:47,069 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:49:47,562 WARN L230 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_ce1a05fb-4e79-4d57-b6ef-6672551b6810/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402539,402552] [2021-11-20 23:49:47,563 WARN L230 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_ce1a05fb-4e79-4d57-b6ef-6672551b6810/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402684,402697] [2021-11-20 23:49:47,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:49:47,847 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:49:47,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47 WrapperNode [2021-11-20 23:49:47,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:49:47,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:49:47,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:49:47,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:49:47,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:47,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,311 INFO L137 Inliner]: procedures = 551, calls = 3616, calls flagged for inlining = 270, calls inlined = 246, statements flattened = 8919 [2021-11-20 23:49:48,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:49:48,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:49:48,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:49:48,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:49:48,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:49:48,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:49:48,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:49:48,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:49:48,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (1/1) ... [2021-11-20 23:49:48,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:49:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:48,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:49:48,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1a05fb-4e79-4d57-b6ef-6672551b6810/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:49:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-20 23:49:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-20 23:49:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-20 23:49:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-20 23:49:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:49:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:49:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-20 23:49:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-20 23:49:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-20 23:49:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-20 23:49:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 23:49:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 23:49:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:49:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:49:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-20 23:49:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-20 23:49:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-20 23:49:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-20 23:49:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-20 23:49:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-20 23:49:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-20 23:49:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-20 23:49:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-20 23:49:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-20 23:49:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-20 23:49:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-20 23:49:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2021-11-20 23:49:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2021-11-20 23:49:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-20 23:49:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-20 23:49:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-20 23:49:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-20 23:49:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-20 23:49:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-20 23:49:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-20 23:49:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-20 23:49:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-20 23:49:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-20 23:49:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-20 23:49:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-20 23:49:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-20 23:49:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-20 23:49:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:49:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-20 23:49:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-20 23:49:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-20 23:49:48,912 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-20 23:49:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:49:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:49:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-20 23:49:48,913 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-20 23:49:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:49:48,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:49:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:49:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-20 23:49:48,914 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-20 23:49:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-20 23:49:48,914 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-20 23:49:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_63 [2021-11-20 23:49:48,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_63 [2021-11-20 23:49:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-20 23:49:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-20 23:49:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 23:49:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 23:49:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:49:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:49:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 23:49:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 23:49:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-20 23:49:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-20 23:49:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-20 23:49:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-20 23:49:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-20 23:49:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-20 23:49:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-20 23:49:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-20 23:49:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_57 [2021-11-20 23:49:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_57 [2021-11-20 23:49:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:49:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:49:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-20 23:49:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-20 23:49:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:49:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 23:49:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 23:49:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-20 23:49:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-20 23:49:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-20 23:49:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-20 23:49:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-20 23:49:48,923 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-20 23:49:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:49:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:49:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:49:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-20 23:49:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-20 23:49:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-20 23:49:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-20 23:49:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:49:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-20 23:49:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-20 23:49:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-20 23:49:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-20 23:49:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-20 23:49:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-20 23:49:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:49:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:49:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-20 23:49:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-20 23:49:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-20 23:49:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-20 23:49:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-20 23:49:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-20 23:49:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-20 23:49:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-20 23:49:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:49:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:49:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 23:49:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 23:49:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-20 23:49:48,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-20 23:49:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 23:49:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 23:49:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-20 23:49:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-20 23:49:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-20 23:49:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-20 23:49:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:49:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-20 23:49:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-20 23:49:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:49:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:49:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:49:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:49:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-20 23:49:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-20 23:49:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:49:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:49:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-20 23:49:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-20 23:49:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-20 23:49:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:49:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:49:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:49:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:49:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:49:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-20 23:49:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-20 23:49:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-20 23:49:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-20 23:49:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-20 23:49:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-20 23:49:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-20 23:49:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-20 23:49:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-20 23:49:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-20 23:49:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-20 23:49:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-20 23:49:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-20 23:49:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-20 23:49:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-20 23:49:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-20 23:49:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:49:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:49:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-20 23:49:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-20 23:49:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 23:49:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 23:49:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-20 23:49:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-20 23:49:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-20 23:49:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-20 23:49:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-20 23:49:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-20 23:49:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:49:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:49:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-20 23:49:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-20 23:49:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:49:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:49:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-20 23:49:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-20 23:49:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-20 23:49:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-20 23:49:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-20 23:49:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-20 23:49:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-20 23:49:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-20 23:49:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:49:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:49:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-20 23:49:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-20 23:49:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:49:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:49:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-20 23:49:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-20 23:49:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-20 23:49:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-20 23:49:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 23:49:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 23:49:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-20 23:49:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-20 23:49:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-20 23:49:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-20 23:49:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-20 23:49:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-20 23:49:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-20 23:49:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-20 23:49:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-20 23:49:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-20 23:49:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-20 23:49:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-20 23:49:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:49:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:49:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-20 23:49:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-20 23:49:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:49:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:49:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-20 23:49:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-20 23:49:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:49:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:49:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-20 23:49:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-20 23:49:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-20 23:49:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-20 23:49:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-20 23:49:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-20 23:49:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-20 23:49:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-20 23:49:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 23:49:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 23:49:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-20 23:49:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-20 23:49:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:49:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:49:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:49:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-20 23:49:48,962 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-20 23:49:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-20 23:49:48,962 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-20 23:49:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-20 23:49:48,962 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-20 23:49:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:49:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-20 23:49:48,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-20 23:49:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-20 23:49:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-20 23:49:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 23:49:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 23:49:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:49:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 23:49:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 23:49:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:49:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:49:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-20 23:49:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-20 23:49:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 23:49:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 23:49:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:49:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:49:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-20 23:49:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-20 23:49:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-20 23:49:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-20 23:49:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:49:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:49:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:49:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:49:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-20 23:49:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-20 23:49:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_86 [2021-11-20 23:49:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_86 [2021-11-20 23:49:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_64 [2021-11-20 23:49:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_64 [2021-11-20 23:49:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-20 23:49:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-20 23:49:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-20 23:49:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-20 23:49:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_58 [2021-11-20 23:49:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_58 [2021-11-20 23:49:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:49:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:49:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-20 23:49:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-20 23:49:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-20 23:49:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-20 23:49:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-20 23:49:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-20 23:49:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-20 23:49:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-20 23:49:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-20 23:49:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-20 23:49:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:49:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-20 23:49:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-20 23:49:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-20 23:49:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-20 23:49:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:49:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:49:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_87 [2021-11-20 23:49:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_87 [2021-11-20 23:49:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-20 23:49:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-20 23:49:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-20 23:49:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-20 23:49:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-20 23:49:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-20 23:49:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-20 23:49:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-20 23:49:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-20 23:49:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-20 23:49:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-20 23:49:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-20 23:49:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 23:49:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 23:49:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-20 23:49:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-20 23:49:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 23:49:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 23:49:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-20 23:49:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-20 23:49:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 23:49:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 23:49:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:49:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:49:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-20 23:49:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-20 23:49:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:49:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:49:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-20 23:49:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-20 23:49:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:49:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:49:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:49:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:49:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-20 23:49:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-20 23:49:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:49:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-20 23:49:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-20 23:49:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-20 23:49:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-20 23:49:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-20 23:49:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-20 23:49:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:49:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:49:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:49:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-20 23:49:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-20 23:49:50,201 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:49:50,208 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:49:50,497 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:49:51,411 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2021-11-20 23:49:58,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:49:59,035 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:50:00,525 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:50:00,525 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-20 23:50:00,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:00 BoogieIcfgContainer [2021-11-20 23:50:00,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:50:00,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:50:00,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:50:00,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:50:00,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:49:42" (1/3) ... [2021-11-20 23:50:00,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1ed25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:00, skipping insertion in model container [2021-11-20 23:50:00,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:49:47" (2/3) ... [2021-11-20 23:50:00,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1ed25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:00, skipping insertion in model container [2021-11-20 23:50:00,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:00" (3/3) ... [2021-11-20 23:50:00,539 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-20 23:50:00,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:50:00,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:50:00,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:50:00,624 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=FINITE_AUTOMATA, 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 [2021-11-20 23:50:00,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:50:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 2631 states, 1544 states have (on average 1.3128238341968912) internal successors, (2027), 1594 states have internal predecessors, (2027), 922 states have call successors, (922), 165 states have call predecessors, (922), 164 states have return successors, (911), 905 states have call predecessors, (911), 911 states have call successors, (911) [2021-11-20 23:50:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-20 23:50:00,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:00,782 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 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] [2021-11-20 23:50:00,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash 601217078, now seen corresponding path program 1 times [2021-11-20 23:50:00,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871316680] [2021-11-20 23:50:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:00,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7665 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7665 trivial. 0 not checked. [2021-11-20 23:50:01,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:01,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871316680] [2021-11-20 23:50:01,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871316680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:01,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:01,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:01,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580419855] [2021-11-20 23:50:01,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:01,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:01,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:01,951 INFO L87 Difference]: Start difference. First operand has 2631 states, 1544 states have (on average 1.3128238341968912) internal successors, (2027), 1594 states have internal predecessors, (2027), 922 states have call successors, (922), 165 states have call predecessors, (922), 164 states have return successors, (911), 905 states have call predecessors, (911), 911 states have call successors, (911) Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-20 23:50:04,249 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 [] [2021-11-20 23:50:07,572 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 [] [2021-11-20 23:50:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:08,037 INFO L93 Difference]: Finished difference Result 7224 states and 10638 transitions. [2021-11-20 23:50:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:08,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 531 [2021-11-20 23:50:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:08,113 INFO L225 Difference]: With dead ends: 7224 [2021-11-20 23:50:08,114 INFO L226 Difference]: Without dead ends: 4619 [2021-11-20 23:50:08,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:08,153 INFO L933 BasicCegarLoop]: 5189 mSDtfsCounter, 2987 mSDsluCounter, 3808 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 8620 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:08,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2989 Valid, 8620 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 930 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 23:50:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2021-11-20 23:50:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 4615. [2021-11-20 23:50:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4615 states, 2730 states have (on average 1.3054945054945055) internal successors, (3564), 2810 states have internal predecessors, (3564), 1577 states have call successors, (1577), 307 states have call predecessors, (1577), 307 states have return successors, (1579), 1564 states have call predecessors, (1579), 1577 states have call successors, (1579) [2021-11-20 23:50:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4615 states to 4615 states and 6720 transitions. [2021-11-20 23:50:08,730 INFO L78 Accepts]: Start accepts. Automaton has 4615 states and 6720 transitions. Word has length 531 [2021-11-20 23:50:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:08,733 INFO L470 AbstractCegarLoop]: Abstraction has 4615 states and 6720 transitions. [2021-11-20 23:50:08,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-20 23:50:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4615 states and 6720 transitions. [2021-11-20 23:50:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-11-20 23:50:08,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:08,797 INFO L514 BasicCegarLoop]: trace histogram [46, 44, 44, 44, 44, 44, 44, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:08,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:50:08,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2125938919, now seen corresponding path program 1 times [2021-11-20 23:50:08,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:08,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101510285] [2021-11-20 23:50:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:08,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7764 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7761 trivial. 0 not checked. [2021-11-20 23:50:09,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:09,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101510285] [2021-11-20 23:50:09,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101510285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:09,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:09,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:09,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635924816] [2021-11-20 23:50:09,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:09,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:09,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:09,566 INFO L87 Difference]: Start difference. First operand 4615 states and 6720 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-20 23:50:11,818 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 [] [2021-11-20 23:50:15,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:17,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:18,011 INFO L93 Difference]: Finished difference Result 11131 states and 16176 transitions. [2021-11-20 23:50:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:18,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 549 [2021-11-20 23:50:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:18,081 INFO L225 Difference]: With dead ends: 11131 [2021-11-20 23:50:18,082 INFO L226 Difference]: Without dead ends: 6605 [2021-11-20 23:50:18,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:18,110 INFO L933 BasicCegarLoop]: 4903 mSDtfsCounter, 2897 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 8230 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:18,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 8230 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 908 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2021-11-20 23:50:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2021-11-20 23:50:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 6603. [2021-11-20 23:50:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6603 states, 3904 states have (on average 1.3037909836065573) internal successors, (5090), 4014 states have internal predecessors, (5090), 2243 states have call successors, (2243), 455 states have call predecessors, (2243), 455 states have return successors, (2247), 2225 states have call predecessors, (2247), 2243 states have call successors, (2247) [2021-11-20 23:50:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6603 states to 6603 states and 9580 transitions. [2021-11-20 23:50:18,703 INFO L78 Accepts]: Start accepts. Automaton has 6603 states and 9580 transitions. Word has length 549 [2021-11-20 23:50:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:18,709 INFO L470 AbstractCegarLoop]: Abstraction has 6603 states and 9580 transitions. [2021-11-20 23:50:18,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-20 23:50:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6603 states and 9580 transitions. [2021-11-20 23:50:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-20 23:50:18,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:18,750 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 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] [2021-11-20 23:50:18,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:50:18,750 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1415040863, now seen corresponding path program 1 times [2021-11-20 23:50:18,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:18,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994519367] [2021-11-20 23:50:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:18,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2021-11-20 23:50:19,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:19,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994519367] [2021-11-20 23:50:19,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994519367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:19,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:19,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:19,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332078439] [2021-11-20 23:50:19,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:19,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:19,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:19,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:19,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:19,149 INFO L87 Difference]: Start difference. First operand 6603 states and 9580 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-20 23:50:21,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:23,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:27,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:30,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:30,766 INFO L93 Difference]: Finished difference Result 17233 states and 24956 transitions. [2021-11-20 23:50:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:30,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 544 [2021-11-20 23:50:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:30,863 INFO L225 Difference]: With dead ends: 17233 [2021-11-20 23:50:30,864 INFO L226 Difference]: Without dead ends: 10719 [2021-11-20 23:50:30,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:30,904 INFO L933 BasicCegarLoop]: 5059 mSDtfsCounter, 3210 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 8410 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:30,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3214 Valid, 8410 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 943 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2021-11-20 23:50:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10719 states. [2021-11-20 23:50:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10719 to 10712. [2021-11-20 23:50:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10712 states, 6350 states have (on average 1.3022047244094488) internal successors, (8269), 6534 states have internal predecessors, (8269), 3596 states have call successors, (3596), 765 states have call predecessors, (3596), 765 states have return successors, (3608), 3565 states have call predecessors, (3608), 3596 states have call successors, (3608) [2021-11-20 23:50:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10712 states to 10712 states and 15473 transitions. [2021-11-20 23:50:31,533 INFO L78 Accepts]: Start accepts. Automaton has 10712 states and 15473 transitions. Word has length 544 [2021-11-20 23:50:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:31,535 INFO L470 AbstractCegarLoop]: Abstraction has 10712 states and 15473 transitions. [2021-11-20 23:50:31,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-20 23:50:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10712 states and 15473 transitions. [2021-11-20 23:50:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2021-11-20 23:50:31,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:31,565 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 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] [2021-11-20 23:50:31,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:50:31,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1125226054, now seen corresponding path program 1 times [2021-11-20 23:50:31,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:31,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970706997] [2021-11-20 23:50:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:31,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2021-11-20 23:50:31,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:31,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970706997] [2021-11-20 23:50:31,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970706997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:31,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:31,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:31,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084644933] [2021-11-20 23:50:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:31,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:31,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:31,971 INFO L87 Difference]: Start difference. First operand 10712 states and 15473 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-20 23:50:34,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:37,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:38,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:40,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:43,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:43,628 INFO L93 Difference]: Finished difference Result 28036 states and 40362 transitions. [2021-11-20 23:50:43,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:43,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 551 [2021-11-20 23:50:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:43,774 INFO L225 Difference]: With dead ends: 28036 [2021-11-20 23:50:43,774 INFO L226 Difference]: Without dead ends: 17413 [2021-11-20 23:50:43,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:43,833 INFO L933 BasicCegarLoop]: 5188 mSDtfsCounter, 3194 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 8535 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:43,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 8535 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 976 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-11-20 23:50:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17413 states. [2021-11-20 23:50:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17413 to 17408. [2021-11-20 23:50:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17408 states, 10359 states have (on average 1.2997393570807994) internal successors, (13464), 10675 states have internal predecessors, (13464), 5734 states have call successors, (5734), 1314 states have call predecessors, (5734), 1314 states have return successors, (5770), 5678 states have call predecessors, (5770), 5734 states have call successors, (5770) [2021-11-20 23:50:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17408 states to 17408 states and 24968 transitions. [2021-11-20 23:50:44,923 INFO L78 Accepts]: Start accepts. Automaton has 17408 states and 24968 transitions. Word has length 551 [2021-11-20 23:50:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:44,924 INFO L470 AbstractCegarLoop]: Abstraction has 17408 states and 24968 transitions. [2021-11-20 23:50:44,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-20 23:50:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 17408 states and 24968 transitions. [2021-11-20 23:50:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2021-11-20 23:50:44,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:44,971 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:44,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:50:44,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1134255638, now seen corresponding path program 1 times [2021-11-20 23:50:44,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280537429] [2021-11-20 23:50:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:44,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2021-11-20 23:50:45,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:45,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280537429] [2021-11-20 23:50:45,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280537429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:45,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:45,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:45,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322658752] [2021-11-20 23:50:45,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:45,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:45,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:45,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:45,388 INFO L87 Difference]: Start difference. First operand 17408 states and 24968 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2021-11-20 23:50:47,791 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 [] [2021-11-20 23:50:49,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:52,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:53,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:53,914 INFO L93 Difference]: Finished difference Result 47931 states and 68669 transitions. [2021-11-20 23:50:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:53,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 559 [2021-11-20 23:50:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:54,105 INFO L225 Difference]: With dead ends: 47931 [2021-11-20 23:50:54,106 INFO L226 Difference]: Without dead ends: 30612 [2021-11-20 23:50:54,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:54,179 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 3062 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 8362 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:54,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3064 Valid, 8362 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 949 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2021-11-20 23:50:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30612 states. [2021-11-20 23:50:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30612 to 30609. [2021-11-20 23:50:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30609 states, 18217 states have (on average 1.295493220618104) internal successors, (23600), 18792 states have internal predecessors, (23600), 10040 states have call successors, (10040), 2353 states have call predecessors, (10040), 2351 states have return successors, (10102), 9930 states have call predecessors, (10102), 10040 states have call successors, (10102) [2021-11-20 23:50:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30609 states to 30609 states and 43742 transitions. [2021-11-20 23:50:56,038 INFO L78 Accepts]: Start accepts. Automaton has 30609 states and 43742 transitions. Word has length 559 [2021-11-20 23:50:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 30609 states and 43742 transitions. [2021-11-20 23:50:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2021-11-20 23:50:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 30609 states and 43742 transitions. [2021-11-20 23:50:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2021-11-20 23:50:56,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:56,086 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:56,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:50:56,087 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 88735158, now seen corresponding path program 1 times [2021-11-20 23:50:56,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:56,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855686545] [2021-11-20 23:50:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:56,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7704 trivial. 0 not checked. [2021-11-20 23:50:57,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:57,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855686545] [2021-11-20 23:50:57,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855686545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:57,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:57,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:57,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719005397] [2021-11-20 23:50:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:57,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:57,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:57,010 INFO L87 Difference]: Start difference. First operand 30609 states and 43742 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:50:59,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:02,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:51:03,734 INFO L93 Difference]: Finished difference Result 84019 states and 119718 transitions. [2021-11-20 23:51:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:51:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 598 [2021-11-20 23:51:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:51:04,100 INFO L225 Difference]: With dead ends: 84019 [2021-11-20 23:51:04,102 INFO L226 Difference]: Without dead ends: 53499 [2021-11-20 23:51:04,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:04,210 INFO L933 BasicCegarLoop]: 4710 mSDtfsCounter, 2965 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 8085 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:51:04,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2969 Valid, 8085 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 883 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2021-11-20 23:51:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53499 states. [2021-11-20 23:51:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53499 to 53464. [2021-11-20 23:51:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53464 states, 31805 states have (on average 1.2917465807263009) internal successors, (41084), 32759 states have internal predecessors, (41084), 17389 states have call successors, (17389), 4273 states have call predecessors, (17389), 4269 states have return successors, (17517), 17197 states have call predecessors, (17517), 17389 states have call successors, (17517) [2021-11-20 23:51:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53464 states to 53464 states and 75990 transitions. [2021-11-20 23:51:07,282 INFO L78 Accepts]: Start accepts. Automaton has 53464 states and 75990 transitions. Word has length 598 [2021-11-20 23:51:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:51:07,284 INFO L470 AbstractCegarLoop]: Abstraction has 53464 states and 75990 transitions. [2021-11-20 23:51:07,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:51:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 53464 states and 75990 transitions. [2021-11-20 23:51:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2021-11-20 23:51:07,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:07,657 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:51:07,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:51:07,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:07,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash -183757121, now seen corresponding path program 1 times [2021-11-20 23:51:07,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:07,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287605155] [2021-11-20 23:51:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:07,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8096 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8089 trivial. 0 not checked. [2021-11-20 23:51:08,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:08,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287605155] [2021-11-20 23:51:08,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287605155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:51:08,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:51:08,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:51:08,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366535920] [2021-11-20 23:51:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:51:08,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:51:08,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:51:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:51:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:08,056 INFO L87 Difference]: Start difference. First operand 53464 states and 75990 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-20 23:51:10,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:14,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:51:16,186 INFO L93 Difference]: Finished difference Result 130617 states and 185604 transitions. [2021-11-20 23:51:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:51:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 599 [2021-11-20 23:51:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:51:16,659 INFO L225 Difference]: With dead ends: 130617 [2021-11-20 23:51:16,659 INFO L226 Difference]: Without dead ends: 77382 [2021-11-20 23:51:16,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:16,852 INFO L933 BasicCegarLoop]: 5945 mSDtfsCounter, 2945 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2947 SdHoareTripleChecker+Valid, 9311 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:51:16,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2947 Valid, 9311 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1118 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:51:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77382 states. [2021-11-20 23:51:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77382 to 77348. [2021-11-20 23:51:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77348 states, 46076 states have (on average 1.2927337442486326) internal successors, (59564), 47424 states have internal predecessors, (59564), 25036 states have call successors, (25036), 6241 states have call predecessors, (25036), 6235 states have return successors, (25214), 24740 states have call predecessors, (25214), 25036 states have call successors, (25214) [2021-11-20 23:51:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77348 states to 77348 states and 109814 transitions. [2021-11-20 23:51:20,463 INFO L78 Accepts]: Start accepts. Automaton has 77348 states and 109814 transitions. Word has length 599 [2021-11-20 23:51:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:51:20,464 INFO L470 AbstractCegarLoop]: Abstraction has 77348 states and 109814 transitions. [2021-11-20 23:51:20,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-20 23:51:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 77348 states and 109814 transitions. [2021-11-20 23:51:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-11-20 23:51:20,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:20,839 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:51:20,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:51:20,840 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2093713373, now seen corresponding path program 1 times [2021-11-20 23:51:20,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:20,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31840164] [2021-11-20 23:51:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:20,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8053 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8050 trivial. 0 not checked. [2021-11-20 23:51:21,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:21,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31840164] [2021-11-20 23:51:21,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31840164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:51:21,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:51:21,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:51:21,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348310708] [2021-11-20 23:51:21,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:51:21,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:51:21,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:51:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:51:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:21,368 INFO L87 Difference]: Start difference. First operand 77348 states and 109814 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-20 23:51:23,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:27,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:51:30,473 INFO L93 Difference]: Finished difference Result 187259 states and 265698 transitions. [2021-11-20 23:51:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:51:30,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 608 [2021-11-20 23:51:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:51:31,146 INFO L225 Difference]: With dead ends: 187259 [2021-11-20 23:51:31,147 INFO L226 Difference]: Without dead ends: 110140 [2021-11-20 23:51:31,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:31,414 INFO L933 BasicCegarLoop]: 6238 mSDtfsCounter, 3192 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 9575 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:51:31,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3196 Valid, 9575 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1171 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:51:31,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110140 states. [2021-11-20 23:51:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110140 to 110137. [2021-11-20 23:51:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110137 states, 65700 states have (on average 1.2916438356164384) internal successors, (84861), 67638 states have internal predecessors, (84861), 35421 states have call successors, (35421), 9027 states have call predecessors, (35421), 9015 states have return successors, (35681), 34989 states have call predecessors, (35681), 35421 states have call successors, (35681) [2021-11-20 23:51:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110137 states to 110137 states and 155963 transitions. [2021-11-20 23:51:36,272 INFO L78 Accepts]: Start accepts. Automaton has 110137 states and 155963 transitions. Word has length 608 [2021-11-20 23:51:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:51:36,284 INFO L470 AbstractCegarLoop]: Abstraction has 110137 states and 155963 transitions. [2021-11-20 23:51:36,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-20 23:51:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 110137 states and 155963 transitions. [2021-11-20 23:51:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2021-11-20 23:51:36,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:36,343 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:51:36,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:51:36,343 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:36,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1016592188, now seen corresponding path program 1 times [2021-11-20 23:51:36,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:36,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814190670] [2021-11-20 23:51:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:36,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8053 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8050 trivial. 0 not checked. [2021-11-20 23:51:36,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:36,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814190670] [2021-11-20 23:51:36,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814190670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:51:36,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:51:36,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:51:36,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433552720] [2021-11-20 23:51:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:51:36,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:51:36,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:51:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:51:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:36,693 INFO L87 Difference]: Start difference. First operand 110137 states and 155963 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-20 23:51:38,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:43,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:45,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:51:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:51:49,651 INFO L93 Difference]: Finished difference Result 264678 states and 374449 transitions. [2021-11-20 23:51:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:51:49,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 607 [2021-11-20 23:51:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:51:50,940 INFO L225 Difference]: With dead ends: 264678 [2021-11-20 23:51:50,941 INFO L226 Difference]: Without dead ends: 154770 [2021-11-20 23:51:51,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:51,245 INFO L933 BasicCegarLoop]: 6257 mSDtfsCounter, 3207 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3211 SdHoareTripleChecker+Valid, 9598 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:51:51,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3211 Valid, 9598 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1167 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2021-11-20 23:51:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154770 states. [2021-11-20 23:51:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154770 to 154695. [2021-11-20 23:51:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154695 states, 92476 states have (on average 1.2905078074311174) internal successors, (119341), 95236 states have internal predecessors, (119341), 49329 states have call successors, (49329), 12913 states have call predecessors, (49329), 12889 states have return successors, (49715), 48699 states have call predecessors, (49715), 49329 states have call successors, (49715) [2021-11-20 23:51:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154695 states to 154695 states and 218385 transitions. [2021-11-20 23:51:58,039 INFO L78 Accepts]: Start accepts. Automaton has 154695 states and 218385 transitions. Word has length 607 [2021-11-20 23:51:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:51:58,041 INFO L470 AbstractCegarLoop]: Abstraction has 154695 states and 218385 transitions. [2021-11-20 23:51:58,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-20 23:51:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 154695 states and 218385 transitions. [2021-11-20 23:51:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2021-11-20 23:51:58,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:51:58,128 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:51:58,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:51:58,129 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:51:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:51:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1245098371, now seen corresponding path program 1 times [2021-11-20 23:51:58,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:51:58,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290383745] [2021-11-20 23:51:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:51:58,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:51:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:51:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8053 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8050 trivial. 0 not checked. [2021-11-20 23:51:58,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:51:58,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290383745] [2021-11-20 23:51:58,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290383745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:51:58,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:51:58,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:51:58,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626805662] [2021-11-20 23:51:58,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:51:58,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:51:58,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:51:58,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:51:58,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:51:58,586 INFO L87 Difference]: Start difference. First operand 154695 states and 218385 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) [2021-11-20 23:52:01,553 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 [] [2021-11-20 23:52:04,517 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 []