./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_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/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 db9df3fec87d6b9c36faf813a91a46a081cd02854907cc9bcc81712e1820716c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:15:48,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:15:48,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:15:48,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:15:48,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:15:48,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:15:48,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:15:48,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:15:48,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:15:48,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:15:48,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:15:48,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:15:48,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:15:48,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:15:48,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:15:48,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:15:48,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:15:48,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:15:48,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:15:48,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:15:48,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:15:48,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:15:48,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:15:48,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:15:48,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:15:48,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:15:48,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:15:48,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:15:48,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:15:48,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:15:48,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:15:48,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:15:48,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:15:48,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:15:48,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:15:48,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:15:48,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:15:48,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:15:48,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:15:48,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:15:48,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:15:48,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:15:48,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:15:48,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:15:48,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:15:48,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:15:48,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:15:48,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:15:48,633 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:15:48,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:15:48,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:15:48,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:15:48,634 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:15:48,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:15:48,634 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:15:48,634 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:15:48,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:15:48,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:15:48,635 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:15:48,635 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:15:48,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:15:48,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:15:48,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:15:48,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:15:48,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:15:48,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:15:48,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:15:48,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:15:48,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:15:48,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:15:48,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:15:48,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:15:48,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:15:48,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:15:48,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:15:48,640 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:15:48,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:15:48,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:15:48,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:15:48,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:15:48,641 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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db9df3fec87d6b9c36faf813a91a46a081cd02854907cc9bcc81712e1820716c [2021-11-21 00:15:48,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:15:48,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:15:48,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:15:48,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:15:48,983 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:15:48,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i [2021-11-21 00:15:49,064 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/data/9c4391e2a/0b9b56ce321a49c39dba860119762251/FLAG57fa5dfa5 [2021-11-21 00:15:49,945 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:15:49,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i [2021-11-21 00:15:50,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/data/9c4391e2a/0b9b56ce321a49c39dba860119762251/FLAG57fa5dfa5 [2021-11-21 00:15:50,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/data/9c4391e2a/0b9b56ce321a49c39dba860119762251 [2021-11-21 00:15:50,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:15:50,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:15:50,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:15:50,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:15:50,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:15:50,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:15:50" (1/1) ... [2021-11-21 00:15:50,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4a3e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:50, skipping insertion in model container [2021-11-21 00:15:50,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:15:50" (1/1) ... [2021-11-21 00:15:50,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:15:50,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:15:53,064 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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i[297133,297146] [2021-11-21 00:15:53,067 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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i[297278,297291] [2021-11-21 00:15:53,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:15:53,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:15:53,591 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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i[297133,297146] [2021-11-21 00:15:53,593 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_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i[297278,297291] [2021-11-21 00:15:53,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:15:53,801 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:15:53,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53 WrapperNode [2021-11-21 00:15:53,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:15:53,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:15:53,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:15:53,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:15:53,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:53,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,113 INFO L137 Inliner]: procedures = 323, calls = 1881, calls flagged for inlining = 162, calls inlined = 153, statements flattened = 4400 [2021-11-21 00:15:54,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:15:54,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:15:54,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:15:54,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:15:54,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:15:54,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:15:54,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:15:54,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:15:54,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (1/1) ... [2021-11-21 00:15:54,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:15:54,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:54,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:15:54,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0af7b4ca-09bc-4665-aac9-bc4db7e1e417/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:15:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_dump [2021-11-21 00:15:54,575 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_dump [2021-11-21 00:15:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_init_controls [2021-11-21 00:15:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_init_controls [2021-11-21 00:15:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_init_controls [2021-11-21 00:15:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_init_controls [2021-11-21 00:15:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure st6422_init [2021-11-21 00:15:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure st6422_init [2021-11-21 00:15:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:15:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:15:54,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:15:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_write_sensor_bytes [2021-11-21 00:15:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_write_sensor_bytes [2021-11-21 00:15:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:15:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:15:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-11-21 00:15:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-11-21 00:15:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sd_driver_exit_14_2 [2021-11-21 00:15:54,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sd_driver_exit_14_2 [2021-11-21 00:15:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:15:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:15:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_stop [2021-11-21 00:15:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_stop [2021-11-21 00:15:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_probe_1020 [2021-11-21 00:15:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_probe_1020 [2021-11-21 00:15:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:15:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:15:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_frame_add [2021-11-21 00:15:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_frame_add [2021-11-21 00:15:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_start [2021-11-21 00:15:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_start [2021-11-21 00:15:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_init [2021-11-21 00:15:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_init [2021-11-21 00:15:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:15:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-21 00:15:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-21 00:15:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_write_sensor [2021-11-21 00:15:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_write_sensor [2021-11-21 00:15:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:15:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_probe_1x00 [2021-11-21 00:15:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_probe_1x00 [2021-11-21 00:15:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:15:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:15:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_s_ctrl [2021-11-21 00:15:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_s_ctrl [2021-11-21 00:15:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-11-21 00:15:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-11-21 00:15:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-21 00:15:54,582 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-21 00:15:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:15:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:15:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:15:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_s_ctrl [2021-11-21 00:15:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_s_ctrl [2021-11-21 00:15:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:15:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_isoc_init [2021-11-21 00:15:54,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_isoc_init [2021-11-21 00:15:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_init_controls [2021-11-21 00:15:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_init_controls [2021-11-21 00:15:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:15:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:15:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_init_controls [2021-11-21 00:15:54,586 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_init_controls [2021-11-21 00:15:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_set_state [2021-11-21 00:15:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_set_state [2021-11-21 00:15:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:15:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:15:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure st6422_start [2021-11-21 00:15:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure st6422_start [2021-11-21 00:15:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-21 00:15:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-21 00:15:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:15:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:15:54,591 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_read_bridge [2021-11-21 00:15:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_read_bridge [2021-11-21 00:15:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure st6422_stop [2021-11-21 00:15:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure st6422_stop [2021-11-21 00:15:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:15:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:15:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:15:54,592 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_isoc_nego [2021-11-21 00:15:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_isoc_nego [2021-11-21 00:15:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:15:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 00:15:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 00:15:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_init [2021-11-21 00:15:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_init [2021-11-21 00:15:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_probe [2021-11-21 00:15:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_probe [2021-11-21 00:15:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_init [2021-11-21 00:15:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_init [2021-11-21 00:15:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 00:15:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 00:15:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:15:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:15:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:15:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:15:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:15:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:15:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_start [2021-11-21 00:15:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_start [2021-11-21 00:15:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_reg_write_seq [2021-11-21 00:15:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_reg_write_seq [2021-11-21 00:15:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:15:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-21 00:15:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-21 00:15:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_10_4 [2021-11-21 00:15:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_10_4 [2021-11-21 00:15:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_start [2021-11-21 00:15:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_start [2021-11-21 00:15:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:15:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:15:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure st6422_s_ctrl [2021-11-21 00:15:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure st6422_s_ctrl [2021-11-21 00:15:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:15:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2021-11-21 00:15:54,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2021-11-21 00:15:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:15:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:15:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:15:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:15:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_init [2021-11-21 00:15:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_init [2021-11-21 00:15:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_read_sensor [2021-11-21 00:15:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_read_sensor [2021-11-21 00:15:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure vv6410_probe [2021-11-21 00:15:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure vv6410_probe [2021-11-21 00:15:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:15:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:15:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:15:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_stop [2021-11-21 00:15:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_stop [2021-11-21 00:15:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:15:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_stop [2021-11-21 00:15:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_stop [2021-11-21 00:15:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure st6422_probe [2021-11-21 00:15:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure st6422_probe [2021-11-21 00:15:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_stopN [2021-11-21 00:15:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_stopN [2021-11-21 00:15:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_write_sensor_finish [2021-11-21 00:15:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_write_sensor_finish [2021-11-21 00:15:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure hdcs_dump [2021-11-21 00:15:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure hdcs_dump [2021-11-21 00:15:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_dump [2021-11-21 00:15:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_dump [2021-11-21 00:15:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_custom [2021-11-21 00:15:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_custom [2021-11-21 00:15:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:15:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:15:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-21 00:15:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-21 00:15:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:15:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:15:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 00:15:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 00:15:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_s_ctrl [2021-11-21 00:15:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_s_ctrl [2021-11-21 00:15:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure st6422_init_controls [2021-11-21 00:15:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure st6422_init_controls [2021-11-21 00:15:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:15:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:15:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure stv06xx_write_bridge [2021-11-21 00:15:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stv06xx_write_bridge [2021-11-21 00:15:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_init_class [2021-11-21 00:15:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_init_class [2021-11-21 00:15:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:15:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:15:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:15:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure sd_disconnect [2021-11-21 00:15:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_disconnect [2021-11-21 00:15:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:15:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:15:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure pb0100_start [2021-11-21 00:15:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pb0100_start [2021-11-21 00:15:55,386 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:15:55,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:16:01,578 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:16:45,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:16:45,757 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:16:47,082 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:16:47,083 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:16:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:16:47 BoogieIcfgContainer [2021-11-21 00:16:47,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:16:47,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:16:47,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:16:47,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:16:47,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:15:50" (1/3) ... [2021-11-21 00:16:47,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c06c813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:16:47, skipping insertion in model container [2021-11-21 00:16:47,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:15:53" (2/3) ... [2021-11-21 00:16:47,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c06c813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:16:47, skipping insertion in model container [2021-11-21 00:16:47,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:16:47" (3/3) ... [2021-11-21 00:16:47,096 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-usb-gspca-stv06xx-gspca_stv06xx.cil.i [2021-11-21 00:16:47,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:16:47,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:16:47,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:16:47,175 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 [2021-11-21 00:16:47,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:16:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 864 states have (on average 1.3506944444444444) internal successors, (1167), 866 states have internal predecessors, (1167), 442 states have call successors, (442), 80 states have call predecessors, (442), 79 states have return successors, (435), 435 states have call predecessors, (435), 435 states have call successors, (435) [2021-11-21 00:16:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-21 00:16:47,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:47,279 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:16:47,280 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash 962057894, now seen corresponding path program 1 times [2021-11-21 00:16:47,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:47,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326887781] [2021-11-21 00:16:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:47,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 00:16:48,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:48,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326887781] [2021-11-21 00:16:48,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326887781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:48,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:48,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:48,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059622662] [2021-11-21 00:16:48,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:48,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:48,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:48,273 INFO L87 Difference]: Start difference. First operand has 1386 states, 864 states have (on average 1.3506944444444444) internal successors, (1167), 866 states have internal predecessors, (1167), 442 states have call successors, (442), 80 states have call predecessors, (442), 79 states have return successors, (435), 435 states have call predecessors, (435), 435 states have call successors, (435) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:16:50,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:16:54,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:16:59,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:00,986 INFO L93 Difference]: Finished difference Result 4033 states and 6014 transitions. [2021-11-21 00:17:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:00,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 203 [2021-11-21 00:17:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:01,035 INFO L225 Difference]: With dead ends: 4033 [2021-11-21 00:17:01,036 INFO L226 Difference]: Without dead ends: 2626 [2021-11-21 00:17:01,056 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 [2021-11-21 00:17:01,061 INFO L933 BasicCegarLoop]: 2125 mSDtfsCounter, 1898 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:01,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 3819 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 669 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2021-11-21 00:17:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-11-21 00:17:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2622. [2021-11-21 00:17:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 1664 states have (on average 1.3455528846153846) internal successors, (2239), 1668 states have internal predecessors, (2239), 805 states have call successors, (805), 152 states have call predecessors, (805), 152 states have return successors, (808), 803 states have call predecessors, (808), 805 states have call successors, (808) [2021-11-21 00:17:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3852 transitions. [2021-11-21 00:17:01,367 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3852 transitions. Word has length 203 [2021-11-21 00:17:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:01,372 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 3852 transitions. [2021-11-21 00:17:01,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:17:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3852 transitions. [2021-11-21 00:17:01,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-21 00:17:01,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:01,388 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:01,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:17:01,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1791540313, now seen corresponding path program 1 times [2021-11-21 00:17:01,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:01,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087334513] [2021-11-21 00:17:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:01,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 00:17:01,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:01,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087334513] [2021-11-21 00:17:01,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087334513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:01,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:01,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:01,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448116157] [2021-11-21 00:17:01,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:01,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:01,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:01,848 INFO L87 Difference]: Start difference. First operand 2622 states and 3852 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:17:03,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:06,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:17:08,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:11,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:12,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:14,956 INFO L93 Difference]: Finished difference Result 7520 states and 11040 transitions. [2021-11-21 00:17:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:14,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 206 [2021-11-21 00:17:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:15,011 INFO L225 Difference]: With dead ends: 7520 [2021-11-21 00:17:15,013 INFO L226 Difference]: Without dead ends: 4933 [2021-11-21 00:17:15,035 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 [2021-11-21 00:17:15,037 INFO L933 BasicCegarLoop]: 2050 mSDtfsCounter, 1711 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:15,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 3695 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 661 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2021-11-21 00:17:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2021-11-21 00:17:15,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 4927. [2021-11-21 00:17:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 3116 states have (on average 1.3401797175866494) internal successors, (4176), 3126 states have internal predecessors, (4176), 1520 states have call successors, (1520), 290 states have call predecessors, (1520), 290 states have return successors, (1529), 1512 states have call predecessors, (1529), 1520 states have call successors, (1529) [2021-11-21 00:17:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 7225 transitions. [2021-11-21 00:17:15,362 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 7225 transitions. Word has length 206 [2021-11-21 00:17:15,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:15,363 INFO L470 AbstractCegarLoop]: Abstraction has 4927 states and 7225 transitions. [2021-11-21 00:17:15,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:17:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 7225 transitions. [2021-11-21 00:17:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-21 00:17:15,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:15,376 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:15,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:17:15,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1710613357, now seen corresponding path program 1 times [2021-11-21 00:17:15,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:15,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390407827] [2021-11-21 00:17:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:15,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 00:17:15,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:15,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390407827] [2021-11-21 00:17:15,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390407827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:15,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:15,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:15,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098544786] [2021-11-21 00:17:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:15,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:15,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:15,716 INFO L87 Difference]: Start difference. First operand 4927 states and 7225 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:17:17,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:24,360 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 [] [2021-11-21 00:17:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:26,771 INFO L93 Difference]: Finished difference Result 14569 states and 21347 transitions. [2021-11-21 00:17:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:26,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 218 [2021-11-21 00:17:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:26,871 INFO L225 Difference]: With dead ends: 14569 [2021-11-21 00:17:26,871 INFO L226 Difference]: Without dead ends: 9677 [2021-11-21 00:17:26,913 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 [2021-11-21 00:17:26,916 INFO L933 BasicCegarLoop]: 2090 mSDtfsCounter, 1851 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:26,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 3736 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 679 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-11-21 00:17:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9677 states. [2021-11-21 00:17:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9677 to 9671. [2021-11-21 00:17:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9671 states, 6136 states have (on average 1.3370273794002607) internal successors, (8204), 6160 states have internal predecessors, (8204), 2954 states have call successors, (2954), 580 states have call predecessors, (2954), 580 states have return successors, (2971), 2934 states have call predecessors, (2971), 2954 states have call successors, (2971) [2021-11-21 00:17:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9671 states to 9671 states and 14129 transitions. [2021-11-21 00:17:27,506 INFO L78 Accepts]: Start accepts. Automaton has 9671 states and 14129 transitions. Word has length 218 [2021-11-21 00:17:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:27,509 INFO L470 AbstractCegarLoop]: Abstraction has 9671 states and 14129 transitions. [2021-11-21 00:17:27,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:17:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9671 states and 14129 transitions. [2021-11-21 00:17:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-21 00:17:27,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:27,522 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:27,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:17:27,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:27,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash 993991232, now seen corresponding path program 1 times [2021-11-21 00:17:27,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:27,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081698322] [2021-11-21 00:17:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:27,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 00:17:27,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:27,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081698322] [2021-11-21 00:17:27,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081698322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:27,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:27,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:27,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624338944] [2021-11-21 00:17:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:27,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:27,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:27,845 INFO L87 Difference]: Start difference. First operand 9671 states and 14129 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:17:29,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:33,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:17:36,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:39,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:40,679 INFO L93 Difference]: Finished difference Result 28645 states and 41819 transitions. [2021-11-21 00:17:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:40,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 210 [2021-11-21 00:17:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:40,824 INFO L225 Difference]: With dead ends: 28645 [2021-11-21 00:17:40,824 INFO L226 Difference]: Without dead ends: 19009 [2021-11-21 00:17:40,881 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 [2021-11-21 00:17:40,882 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 1849 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:40,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 3768 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 698 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-21 00:17:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19009 states. [2021-11-21 00:17:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19009 to 19003. [2021-11-21 00:17:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19003 states, 12088 states have (on average 1.3328921244209133) internal successors, (16112), 12140 states have internal predecessors, (16112), 5754 states have call successors, (5754), 1160 states have call predecessors, (5754), 1160 states have return successors, (5791), 5710 states have call predecessors, (5791), 5754 states have call successors, (5791) [2021-11-21 00:17:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19003 states to 19003 states and 27657 transitions. [2021-11-21 00:17:41,914 INFO L78 Accepts]: Start accepts. Automaton has 19003 states and 27657 transitions. Word has length 210 [2021-11-21 00:17:41,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:41,915 INFO L470 AbstractCegarLoop]: Abstraction has 19003 states and 27657 transitions. [2021-11-21 00:17:41,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:17:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 19003 states and 27657 transitions. [2021-11-21 00:17:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-21 00:17:41,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:41,926 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:41,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:17:41,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1129875642, now seen corresponding path program 1 times [2021-11-21 00:17:41,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:41,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880970698] [2021-11-21 00:17:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:41,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 00:17:42,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880970698] [2021-11-21 00:17:42,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880970698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:42,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:42,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:42,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698669440] [2021-11-21 00:17:42,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:42,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:42,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:42,258 INFO L87 Difference]: Start difference. First operand 19003 states and 27657 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:17:44,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:48,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:17:53,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:55,325 INFO L93 Difference]: Finished difference Result 56377 states and 81971 transitions. [2021-11-21 00:17:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 219 [2021-11-21 00:17:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:55,571 INFO L225 Difference]: With dead ends: 56377 [2021-11-21 00:17:55,571 INFO L226 Difference]: Without dead ends: 37409 [2021-11-21 00:17:55,681 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 [2021-11-21 00:17:55,682 INFO L933 BasicCegarLoop]: 2168 mSDtfsCounter, 1850 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:55,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 3814 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 712 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 00:17:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37409 states. [2021-11-21 00:17:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37409 to 37403. [2021-11-21 00:17:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37403 states, 23864 states have (on average 1.3285283271873953) internal successors, (31704), 23972 states have internal predecessors, (31704), 11218 states have call successors, (11218), 2320 states have call predecessors, (11218), 2320 states have return successors, (11279), 11126 states have call predecessors, (11279), 11218 states have call successors, (11279) [2021-11-21 00:17:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37403 states to 37403 states and 54201 transitions. [2021-11-21 00:17:58,101 INFO L78 Accepts]: Start accepts. Automaton has 37403 states and 54201 transitions. Word has length 219 [2021-11-21 00:17:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:58,102 INFO L470 AbstractCegarLoop]: Abstraction has 37403 states and 54201 transitions. [2021-11-21 00:17:58,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:17:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 37403 states and 54201 transitions. [2021-11-21 00:17:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-21 00:17:58,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:58,123 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:58,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:17:58,123 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash 324524465, now seen corresponding path program 1 times [2021-11-21 00:17:58,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042394569] [2021-11-21 00:17:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:58,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 00:17:58,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:58,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042394569] [2021-11-21 00:17:58,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042394569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:58,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:58,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:58,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927188499] [2021-11-21 00:17:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:58,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:58,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:58,444 INFO L87 Difference]: Start difference. First operand 37403 states and 54201 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:18:00,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:02,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:18:04,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:18:10,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:18:12,634 INFO L93 Difference]: Finished difference Result 107955 states and 156409 transitions. [2021-11-21 00:18:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:18:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 218 [2021-11-21 00:18:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:18:13,147 INFO L225 Difference]: With dead ends: 107955 [2021-11-21 00:18:13,147 INFO L226 Difference]: Without dead ends: 70587 [2021-11-21 00:18:13,322 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 [2021-11-21 00:18:13,323 INFO L933 BasicCegarLoop]: 2049 mSDtfsCounter, 1810 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:18:13,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1813 Valid, 3693 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 665 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2021-11-21 00:18:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70587 states. [2021-11-21 00:18:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70587 to 70521. [2021-11-21 00:18:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70521 states, 45242 states have (on average 1.325847663675346) internal successors, (59984), 45522 states have internal predecessors, (59984), 20871 states have call successors, (20871), 4407 states have call predecessors, (20871), 4407 states have return successors, (20988), 20623 states have call predecessors, (20988), 20871 states have call successors, (20988) [2021-11-21 00:18:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70521 states to 70521 states and 101843 transitions. [2021-11-21 00:18:17,229 INFO L78 Accepts]: Start accepts. Automaton has 70521 states and 101843 transitions. Word has length 218 [2021-11-21 00:18:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:18:17,230 INFO L470 AbstractCegarLoop]: Abstraction has 70521 states and 101843 transitions. [2021-11-21 00:18:17,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 00:18:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 70521 states and 101843 transitions. [2021-11-21 00:18:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-21 00:18:17,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:18:17,507 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 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] [2021-11-21 00:18:17,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:18:17,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:18:17,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:18:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1588436235, now seen corresponding path program 1 times [2021-11-21 00:18:17,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:18:17,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122085541] [2021-11-21 00:18:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:18:17,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:18:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:18:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-11-21 00:18:17,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:18:17,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122085541] [2021-11-21 00:18:17,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122085541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:18:17,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:18:17,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:18:17,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398407306] [2021-11-21 00:18:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:18:17,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:18:17,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:18:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:18:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:18:17,745 INFO L87 Difference]: Start difference. First operand 70521 states and 101843 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 00:18:19,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:29,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:18:31,379 INFO L93 Difference]: Finished difference Result 143056 states and 206159 transitions. [2021-11-21 00:18:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:18:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 223 [2021-11-21 00:18:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:18:31,911 INFO L225 Difference]: With dead ends: 143056 [2021-11-21 00:18:31,912 INFO L226 Difference]: Without dead ends: 72570 [2021-11-21 00:18:32,120 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 [2021-11-21 00:18:32,120 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 1415 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:18:32,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 3584 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 657 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2021-11-21 00:18:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72570 states. [2021-11-21 00:18:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72570 to 72568. [2021-11-21 00:18:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72568 states, 46546 states have (on average 1.3229278563141837) internal successors, (61577), 46828 states have internal predecessors, (61577), 21328 states have call successors, (21328), 4693 states have call predecessors, (21328), 4693 states have return successors, (21446), 21078 states have call predecessors, (21446), 21328 states have call successors, (21446) [2021-11-21 00:18:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72568 states to 72568 states and 104351 transitions. [2021-11-21 00:18:35,768 INFO L78 Accepts]: Start accepts. Automaton has 72568 states and 104351 transitions. Word has length 223 [2021-11-21 00:18:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:18:35,769 INFO L470 AbstractCegarLoop]: Abstraction has 72568 states and 104351 transitions. [2021-11-21 00:18:35,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 00:18:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 72568 states and 104351 transitions. [2021-11-21 00:18:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-21 00:18:35,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:18:35,784 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:18:35,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:18:35,784 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:18:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:18:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash 697966331, now seen corresponding path program 1 times [2021-11-21 00:18:35,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:18:35,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236198150] [2021-11-21 00:18:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:18:35,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:18:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:18:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-11-21 00:18:36,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:18:36,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236198150] [2021-11-21 00:18:36,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236198150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:18:36,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:18:36,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:18:36,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145948785] [2021-11-21 00:18:36,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:18:36,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:18:36,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:18:36,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:18:36,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:18:36,038 INFO L87 Difference]: Start difference. First operand 72568 states and 104351 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 00:18:38,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:40,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:18:53,369 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 [] [2021-11-21 00:18:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:18:54,454 INFO L93 Difference]: Finished difference Result 177228 states and 254700 transitions. [2021-11-21 00:18:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:18:54,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 243 [2021-11-21 00:18:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:18:54,932 INFO L225 Difference]: With dead ends: 177228 [2021-11-21 00:18:54,932 INFO L226 Difference]: Without dead ends: 104695 [2021-11-21 00:18:55,413 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 [2021-11-21 00:18:55,414 INFO L933 BasicCegarLoop]: 2776 mSDtfsCounter, 1793 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 4442 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:18:55,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1798 Valid, 4442 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 804 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2021-11-21 00:18:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104695 states. [2021-11-21 00:18:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104695 to 104659. [2021-11-21 00:18:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104659 states, 67236 states have (on average 1.3215688024272711) internal successors, (88857), 67656 states have internal predecessors, (88857), 30607 states have call successors, (30607), 6815 states have call predecessors, (30607), 6815 states have return successors, (30836), 30235 states have call predecessors, (30836), 30607 states have call successors, (30836) [2021-11-21 00:19:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104659 states to 104659 states and 150300 transitions. [2021-11-21 00:19:00,126 INFO L78 Accepts]: Start accepts. Automaton has 104659 states and 150300 transitions. Word has length 243 [2021-11-21 00:19:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:00,127 INFO L470 AbstractCegarLoop]: Abstraction has 104659 states and 150300 transitions. [2021-11-21 00:19:00,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 00:19:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 104659 states and 150300 transitions. [2021-11-21 00:19:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-21 00:19:00,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:00,160 INFO L514 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 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] [2021-11-21 00:19:00,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:19:00,160 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1743627721, now seen corresponding path program 1 times [2021-11-21 00:19:00,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:00,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423744138] [2021-11-21 00:19:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:00,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-11-21 00:19:00,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:00,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423744138] [2021-11-21 00:19:00,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423744138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:00,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:00,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:19:00,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293403536] [2021-11-21 00:19:00,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:00,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:19:00,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:00,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:19:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:19:00,442 INFO L87 Difference]: Start difference. First operand 104659 states and 150300 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 00:19:02,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:06,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:09,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:19:20,838 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 [] [2021-11-21 00:19:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:22,546 INFO L93 Difference]: Finished difference Result 255347 states and 369128 transitions. [2021-11-21 00:19:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:19:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 269 [2021-11-21 00:19:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:23,429 INFO L225 Difference]: With dead ends: 255347 [2021-11-21 00:19:23,429 INFO L226 Difference]: Without dead ends: 151231 [2021-11-21 00:19:24,160 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 [2021-11-21 00:19:24,161 INFO L933 BasicCegarLoop]: 3094 mSDtfsCounter, 1713 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:24,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 4737 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 922 Invalid, 4 Unknown, 0 Unchecked, 17.0s Time] [2021-11-21 00:19:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151231 states. [2021-11-21 00:19:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151231 to 151133. [2021-11-21 00:19:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151133 states, 97126 states have (on average 1.3211601424953154) internal successors, (128319), 97780 states have internal predecessors, (128319), 44089 states have call successors, (44089), 9917 states have call predecessors, (44089), 9917 states have return successors, (46878), 43483 states have call predecessors, (46878), 44089 states have call successors, (46878) [2021-11-21 00:19:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151133 states to 151133 states and 219286 transitions. [2021-11-21 00:19:30,799 INFO L78 Accepts]: Start accepts. Automaton has 151133 states and 219286 transitions. Word has length 269 [2021-11-21 00:19:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:30,800 INFO L470 AbstractCegarLoop]: Abstraction has 151133 states and 219286 transitions. [2021-11-21 00:19:30,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 00:19:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 151133 states and 219286 transitions. [2021-11-21 00:19:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-21 00:19:30,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:30,826 INFO L514 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 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] [2021-11-21 00:19:30,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:19:30,826 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash -29258224, now seen corresponding path program 1 times [2021-11-21 00:19:30,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:30,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928482796] [2021-11-21 00:19:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:30,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2021-11-21 00:19:31,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928482796] [2021-11-21 00:19:31,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928482796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:31,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:31,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:19:31,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164737317] [2021-11-21 00:19:31,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:31,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:19:31,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:19:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:19:31,581 INFO L87 Difference]: Start difference. First operand 151133 states and 219286 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 00:19:33,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:36,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []